v3.26.1
Allowance for credit losses - loans held-in-portfolio - Schedule of Loan Modifications Made to Borrowers Experiencing Financial Difficulty (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Interest Rate Reduction        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 1,988 $ 2,460 $ 3,370 $ 4,944
% of total class of Financing Receivable 0.01% 0.01% 0.01% 0.01%
Interest Rate Reduction | Mortgage        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 148 $ 69 $ 222 $ 69
% of total class of Financing Receivable 0.00% 0.00% 0.00% 0.00%
Interest Rate Reduction | Commercial | Commercial and industrial        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 742 $ 837 $ 1,461 $ 2,048
% of total class of Financing Receivable 0.01% 0.01% 0.02% 0.03%
Interest Rate Reduction | Consumer | Credit cards        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 222 $ 395 $ 287 $ 542
% of total class of Financing Receivable 0.02% 0.03% 0.02% 0.04%
Interest Rate Reduction | Consumer | Personal        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 876 $ 1,159 $ 1,400 $ 2,280
% of total class of Financing Receivable 0.04% 0.06% 0.07% 0.12%
Interest Rate Reduction | Consumer | Other        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis       $ 5
% of total class of Financing Receivable       0.00%
Interest Rate Reduction | BPPR        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 1,988 $ 2,460 $ 3,370 $ 4,944
% of total class of Financing Receivable 0.01% 0.01% 0.01% 0.02%
Interest Rate Reduction | BPPR | Mortgage        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 148 $ 69 $ 222 $ 69
% of total class of Financing Receivable 0.00% 0.00% 0.00% 0.00%
Interest Rate Reduction | BPPR | Commercial | Commercial and industrial        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 742 $ 837 $ 1,461 $ 2,048
% of total class of Financing Receivable 0.01% 0.01% 0.02% 0.04%
Interest Rate Reduction | BPPR | Consumer | Credit cards        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 222 $ 395 $ 287 $ 542
% of total class of Financing Receivable 0.02% 0.03% 0.02% 0.04%
Interest Rate Reduction | BPPR | Consumer | Personal        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 876 $ 1,159 $ 1,400 $ 2,280
% of total class of Financing Receivable 0.05% 0.06% 0.07% 0.13%
Interest Rate Reduction | BPPR | Consumer | Other        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis       $ 5
% of total class of Financing Receivable       0.00%
Interest Rate Reduction | Popular U.S.        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivable 0.00% 0.00% 0.00% 0.00%
Interest Rate Reduction | Popular U.S. | Mortgage        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivable 0.00% 0.00% 0.00% 0.00%
Interest Rate Reduction | Popular U.S. | Commercial | Commercial and industrial        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivable 0.00% 0.00% 0.00% 0.00%
Interest Rate Reduction | Popular U.S. | Consumer | Credit cards        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivable 0.00% 0.00% 0.00% 0.00%
Interest Rate Reduction | Popular U.S. | Consumer | Personal        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivable 0.00% 0.00% 0.00% 0.00%
Interest Rate Reduction | Popular U.S. | Consumer | Other        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis       $ 0
% of total class of Financing Receivable       0.00%
Term Extension        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 28,016 $ 83,739 $ 49,721 $ 99,529
% of total class of Financing Receivable 0.07% 0.22% 0.13% 0.26%
Term Extension | Mortgage        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 13,863 $ 13,648 $ 20,150 $ 23,587
% of total class of Financing Receivable 0.16% 0.16% 0.23% 0.28%
Term Extension | Commercial | CRE Non-owner occupied        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 7,740 $ 58,760 $ 9,567 $ 58,760
% of total class of Financing Receivable 0.14% 1.06% 0.17% 1.06%
Term Extension | Commercial | CRE Owner occupied        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 2,850 $ 5,308 $ 4,175 $ 5,308
% of total class of Financing Receivable 0.09% 0.18% 0.13% 0.18%
Term Extension | Commercial | Commercial and industrial        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 3,353 $ 5,693 $ 15,468 $ 11,271
% of total class of Financing Receivable 0.04% 0.07% 0.18% 0.14%
Term Extension | Consumer | Personal        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 133 $ 281 $ 235 $ 516
% of total class of Financing Receivable 0.01% 0.01% 0.01% 0.03%
Term Extension | Consumer | Auto        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 77 $ 49 $ 126 $ 87
% of total class of Financing Receivable 0.00% 0.00% 0.00% 0.00%
Term Extension | BPPR        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 25,224 $ 24,401 $ 46,929 $ 40,191
% of total class of Financing Receivable 0.09% 0.09% 0.17% 0.15%
Term Extension | BPPR | Mortgage        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 13,167 $ 12,983 $ 19,454 $ 22,922
% of total class of Financing Receivable 0.17% 0.18% 0.26% 0.32%
Term Extension | BPPR | Commercial | CRE Non-owner occupied        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 7,740 $ 108 $ 9,567 $ 108
% of total class of Financing Receivable 0.23% 0.00% 0.29% 0.00%
Term Extension | BPPR | Commercial | CRE Owner occupied        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 1,453 $ 5,308 $ 2,778 $ 5,308
% of total class of Financing Receivable 0.13% 0.44% 0.24% 0.44%
Term Extension | BPPR | Commercial | Commercial and industrial        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 2,654 $ 5,693 $ 14,769 $ 11,271
% of total class of Financing Receivable 0.04% 0.10% 0.24% 0.20%
Term Extension | BPPR | Consumer | Personal        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 133 $ 260 $ 235 $ 495
% of total class of Financing Receivable 0.01% 0.01% 0.01% 0.03%
Term Extension | BPPR | Consumer | Auto        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 77 $ 49 $ 126 $ 87
% of total class of Financing Receivable 0.00% 0.00% 0.00% 0.00%
Term Extension | Popular U.S.        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 2,792 $ 59,338 $ 2,792 $ 59,338
% of total class of Financing Receivable 0.02% 0.52% 0.02% 0.52%
Term Extension | Popular U.S. | Mortgage        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 696 $ 665 $ 696 $ 665
% of total class of Financing Receivable 0.06% 0.05% 0.06% 0.05%
Term Extension | Popular U.S. | Commercial | CRE Non-owner occupied        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 0 $ 58,652 $ 0 $ 58,652
% of total class of Financing Receivable 0.00% 2.68% 0.00% 2.68%
Term Extension | Popular U.S. | Commercial | CRE Owner occupied        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 1,397 $ 0 $ 1,397 $ 0
% of total class of Financing Receivable 0.07% 0.00% 0.07% 0.00%
Term Extension | Popular U.S. | Commercial | Commercial and industrial        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 699 $ 0 $ 699 $ 0
% of total class of Financing Receivable 0.03% 0.00% 0.03% 0.00%
Term Extension | Popular U.S. | Consumer | Personal        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 0 $ 21 $ 0 $ 21
% of total class of Financing Receivable 0.00% 0.02% 0.00% 0.02%
Term Extension | Popular U.S. | Consumer | Auto        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivable 0.00% 0.00% 0.00% 0.00%
Other-Than-Insignificant Payment Delays        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 111,703 $ 180,553 $ 239,875 $ 203,342
% of total class of Financing Receivable 0.28% 0.47% 0.60% 0.53%
Other-Than-Insignificant Payment Delays | Mortgage        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 106 $ 420 $ 106 $ 420
% of total class of Financing Receivable 0.00% 0.00% 0.00% 0.00%
Other-Than-Insignificant Payment Delays | Commercial | CRE Non-owner occupied        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 269 $ 4,436 $ 269 $ 4,436
% of total class of Financing Receivable 0.00% 0.08% 0.00% 0.08%
Other-Than-Insignificant Payment Delays | Commercial | CRE Owner occupied        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 7,202 $ 8,827 $ 18,696 $ 20,980
% of total class of Financing Receivable 0.22% 0.29% 0.57% 0.70%
Other-Than-Insignificant Payment Delays | Commercial | Commercial and industrial        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 104,126 $ 166,870 $ 220,804 $ 177,506
% of total class of Financing Receivable 1.19% 2.07% 2.52% 2.21%
Other-Than-Insignificant Payment Delays | BPPR        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 111,703 $ 180,553 $ 239,875 $ 203,342
% of total class of Financing Receivable 0.40% 0.67% 0.86% 0.76%
Other-Than-Insignificant Payment Delays | BPPR | Mortgage        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 106 $ 420 $ 106 $ 420
% of total class of Financing Receivable 0.00% 0.01% 0.00% 0.01%
Other-Than-Insignificant Payment Delays | BPPR | Commercial | CRE Non-owner occupied        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 269 $ 4,436 $ 269 $ 4,436
% of total class of Financing Receivable 0.01% 0.13% 0.01% 0.13%
Other-Than-Insignificant Payment Delays | BPPR | Commercial | CRE Owner occupied        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 7,202 $ 8,827 $ 18,696 $ 20,980
% of total class of Financing Receivable 0.62% 0.73% 1.62% 1.75%
Other-Than-Insignificant Payment Delays | BPPR | Commercial | Commercial and industrial        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 104,126 $ 166,870 $ 220,804 $ 177,506
% of total class of Financing Receivable 1.69% 2.98% 3.58% 3.17%
Other-Than-Insignificant Payment Delays | Popular U.S.        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivable 0.00% 0.00% 0.00% 0.00%
Other-Than-Insignificant Payment Delays | Popular U.S. | Mortgage        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivable 0.00% 0.00% 0.00% 0.00%
Other-Than-Insignificant Payment Delays | Popular U.S. | Commercial | CRE Non-owner occupied        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivable 0.00% 0.00% 0.00% 0.00%
Other-Than-Insignificant Payment Delays | Popular U.S. | Commercial | CRE Owner occupied        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivable 0.00% 0.00% 0.00% 0.00%
Other-Than-Insignificant Payment Delays | Popular U.S. | Commercial | Commercial and industrial        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivable 0.00% 0.00% 0.00% 0.00%
Combination - Term Extension and Interest Rate Reduction        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 5,341 $ 7,554 $ 10,343 $ 13,825
% of total class of Financing Receivable 0.01% 0.02% 0.03% 0.04%
Combination - Term Extension and Interest Rate Reduction | Mortgage        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 2,849 $ 3,936 $ 5,035 $ 7,061
% of total class of Financing Receivable 0.03% 0.05% 0.06% 0.08%
Combination - Term Extension and Interest Rate Reduction | Commercial | CRE Owner occupied        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 33   $ 33  
% of total class of Financing Receivable 0.00%   0.00%  
Combination - Term Extension and Interest Rate Reduction | Commercial | Commercial and industrial        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis   $ 100 $ 90 $ 100
% of total class of Financing Receivable   0.00% 0.00% 0.00%
Combination - Term Extension and Interest Rate Reduction | Consumer | Personal        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 2,379 $ 3,502 $ 5,011 $ 6,648
% of total class of Financing Receivable 0.12% 0.19% 0.26% 0.35%
Combination - Term Extension and Interest Rate Reduction | Consumer | Auto        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 80 $ 16 $ 174 $ 16
% of total class of Financing Receivable 0.00% 0.00% 0.00% 0.00%
Combination - Term Extension and Interest Rate Reduction | BPPR        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 5,005 $ 7,481 $ 9,996 $ 13,711
% of total class of Financing Receivable 0.02% 0.03% 0.04% 0.05%
Combination - Term Extension and Interest Rate Reduction | BPPR | Mortgage        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 2,520 $ 3,936 $ 4,706 $ 7,061
% of total class of Financing Receivable 0.03% 0.06% 0.06% 0.10%
Combination - Term Extension and Interest Rate Reduction | BPPR | Commercial | CRE Owner occupied        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 33   $ 33  
% of total class of Financing Receivable 0.00%   0.00%  
Combination - Term Extension and Interest Rate Reduction | BPPR | Commercial | Commercial and industrial        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis   $ 100 $ 90 $ 100
% of total class of Financing Receivable   0.00% 0.00% 0.00%
Combination - Term Extension and Interest Rate Reduction | BPPR | Consumer | Personal        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 2,372 $ 3,429 $ 4,993 $ 6,534
% of total class of Financing Receivable 0.13% 0.19% 0.26% 0.36%
Combination - Term Extension and Interest Rate Reduction | BPPR | Consumer | Auto        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 80 $ 16 $ 174 $ 16
% of total class of Financing Receivable 0.00% 0.00% 0.00% 0.00%
Combination - Term Extension and Interest Rate Reduction | Popular U.S.        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 336 $ 73 $ 347 $ 114
% of total class of Financing Receivable 0.00% 0.00% 0.00% 0.00%
Combination - Term Extension and Interest Rate Reduction | Popular U.S. | Mortgage        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 329 $ 0 $ 329 $ 0
% of total class of Financing Receivable 0.03% 0.00% 0.03% 0.00%
Combination - Term Extension and Interest Rate Reduction | Popular U.S. | Commercial | CRE Owner occupied        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 0   $ 0  
% of total class of Financing Receivable 0.00%   0.00%  
Combination - Term Extension and Interest Rate Reduction | Popular U.S. | Commercial | Commercial and industrial        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis   $ 0 $ 0 $ 0
% of total class of Financing Receivable   0.00% 0.00% 0.00%
Combination - Term Extension and Interest Rate Reduction | Popular U.S. | Consumer | Personal        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 7 $ 73 $ 18 $ 114
% of total class of Financing Receivable 0.01% 0.09% 0.03% 0.14%
Combination - Term Extension and Interest Rate Reduction | Popular U.S. | Consumer | Auto        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0
% of total class of Financing Receivable 0.00% 0.00% 0.00%
Combination - Other-Than-Insignificant Payment Delays and Interest Rate Reduction        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 3,157 $ 2,603 $ 5,622 $ 5,728
% of total class of Financing Receivable 0.01% 0.01% 0.01% 0.02%
Combination - Other-Than-Insignificant Payment Delays and Interest Rate Reduction | Commercial | Commercial and industrial        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 878 $ 310 $ 1,047 $ 861
% of total class of Financing Receivable 0.01% 0.00% 0.01% 0.01%
Combination - Other-Than-Insignificant Payment Delays and Interest Rate Reduction | Consumer | Credit cards        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 2,279 $ 2,293 $ 4,575 $ 4,867
% of total class of Financing Receivable 0.18% 0.19% 0.37% 0.40%
Combination - Other-Than-Insignificant Payment Delays and Interest Rate Reduction | BPPR        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 3,157 $ 2,603 $ 5,622 $ 5,728
% of total class of Financing Receivable 0.01% 0.01% 0.02% 0.02%
Combination - Other-Than-Insignificant Payment Delays and Interest Rate Reduction | BPPR | Commercial | Commercial and industrial        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 878 $ 310 $ 1,047 $ 861
% of total class of Financing Receivable 0.01% 0.01% 0.02% 0.02%
Combination - Other-Than-Insignificant Payment Delays and Interest Rate Reduction | BPPR | Consumer | Credit cards        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 2,279 $ 2,293 $ 4,575 $ 4,867
% of total class of Financing Receivable 0.18% 0.19% 0.37% 0.40%
Combination - Other-Than-Insignificant Payment Delays and Interest Rate Reduction | Popular U.S.        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivable 0.00% 0.00% 0.00% 0.00%
Combination - Other-Than-Insignificant Payment Delays and Interest Rate Reduction | Popular U.S. | Commercial | Commercial and industrial        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivable 0.00% 0.00% 0.00% 0.00%
Combination - Other-Than-Insignificant Payment Delays and Interest Rate Reduction | Popular U.S. | Consumer | Credit cards        
Financing Receivable, Modified [Line Items]        
Amortized Cost Basis $ 0 $ 0 $ 0 $ 0
% of total class of Financing Receivable 0.00% 0.00% 0.00% 0.00%