v3.25.4
Reportable Segment Information - (Revenues and Earnings) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2025
Dec. 31, 2024
Revenues [Abstract]        
Revenues $ 1,415,608 $ 1,388,558 $ 4,766,000 $ 4,595,156
Operating Expenses [Abstract]        
Personnel expenses 308,494 292,289 936,215 888,153
Equipment maintenance and repair expenses 204,299 191,226 622,016 593,388
Other operating expenses 101,016 63,107 274,831 196,574
Other segment items 234,805 235,729 751,843 785,066
Operating Expenses, Total 848,614 782,351 2,584,905 2,463,181
Operating Costs and Expenses [Abstract]        
Commission expenses 96,101 95,031 334,649 326,610
Cost of product sales 50,871 52,767 190,701 181,031
Benefits and losses 49,232 48,683 142,592 137,081
Amortization of deferred policy acquisition costs 4,922 4,493 14,801 13,578
Lease expense 4,281 5,052 14,226 15,386
Depreciation, net of (gains) losses on disposals 325,219 246,091 969,836 689,906
Net (gains) losses on disposal of real estate 2,696 3,358 5,610 9,453
Costs and Expenses, Total 1,381,936 1,237,826 4,257,320 3,836,226
Income (Loss) Attributable to Parent, before Tax [Abstract]        
Earnings from operations before equity in earnings of subsidiaries 33,672 150,732 508,680 758,930
Earnings from operations 33,672 150,732 508,680 758,930
Other components of net periodic benefit costs (346) (372) (1,037) (1,116)
Other interest income 10,784 15,638 31,468 50,004
Interest expense 95,527 76,581 268,162 215,297
Fees and amortization on early extinguishment of debt (163)   (189) (495)
Pretax earnings 51,580 89,417 270,760 592,026
Income tax expense 14,612 22,251 59,847 142,645
Net earnings available to common stockholders 36,968 67,166 210,913 449,381
Operating Segments [Member] | Moving and Storage Consolidations [Member]        
Revenues [Abstract]        
Revenues 1,319,890 1,296,556 4,506,576 4,339,360
Operating Expenses [Abstract]        
Personnel expenses 308,494 292,289 936,215 888,153
Equipment maintenance and repair expenses 204,299 191,226 622,016 593,388
Other operating expenses 101,016 63,107 274,831 196,574
Other segment items 219,237 219,838 709,391 733,956
Operating Expenses, Total 833,046 766,460 2,542,453 2,412,071
Operating Costs and Expenses [Abstract]        
Commission expenses 96,101 95,031 334,649 326,610
Cost of product sales 50,871 52,767 190,701 181,031
Lease expense 4,873 5,572 15,925 17,259
Depreciation, net of (gains) losses on disposals 325,219 246,091 969,836 689,906
Net (gains) losses on disposal of real estate 2,696 3,358 5,610 9,453
Costs and Expenses, Total 1,312,806 1,169,279 4,059,174 3,636,330
Income (Loss) Attributable to Parent, before Tax [Abstract]        
Earnings from operations before equity in earnings of subsidiaries 7,084 127,277 447,402 703,030
Equity in earnings of subsidiaries 21,018 17,956 48,523 43,980
Earnings from operations 28,102 145,233 495,925 747,010
Other components of net periodic benefit costs (346) (372) (1,037) (1,116)
Other interest income 10,856 15,734 31,732 50,340
Interest expense 95,555 76,833 268,246 216,053
Fees and amortization on early extinguishment of debt (163)   (189) (495)
Pretax earnings 57,106 83,762 258,185 579,686
Income tax expense 20,138 16,596 47,272 130,305
Net earnings available to common stockholders 36,968 67,166 210,913 449,381
Operating Segments [Member] | Property and Casualty Insurance [Member]        
Revenues [Abstract]        
Revenues 42,516 38,141 108,128 97,780
Operating Expenses [Abstract]        
Other segment items 13,763 12,550 38,947 36,055
Operating Expenses, Total 13,763 12,550 38,947 36,055
Operating Costs and Expenses [Abstract]        
Benefits and losses 7,860 6,038 19,096 16,669
Lease expense 74 90 224 287
Costs and Expenses, Total 21,697 18,678 58,267 53,011
Income (Loss) Attributable to Parent, before Tax [Abstract]        
Earnings from operations before equity in earnings of subsidiaries 20,819 19,463 49,861 44,769
Earnings from operations 20,819 19,463 49,861 44,769
Pretax earnings 20,819 19,463 49,861 44,769
Income tax expense 4,358 4,072 10,341 9,293
Net earnings available to common stockholders 16,461 15,391 39,520 35,476
Operating Segments [Member] | Life Insurance [Member]        
Revenues [Abstract]        
Revenues 56,207 56,762 160,414 166,668
Operating Expenses [Abstract]        
Other segment items 4,091 5,347 10,510 20,697
Operating Expenses, Total 4,091 5,347 10,510 20,697
Operating Costs and Expenses [Abstract]        
Benefits and losses 41,372 42,645 123,496 120,412
Amortization of deferred policy acquisition costs 4,922 4,493 14,801 13,578
Lease expense 25 33 106 94
Costs and Expenses, Total 50,410 52,518 148,913 154,781
Income (Loss) Attributable to Parent, before Tax [Abstract]        
Earnings from operations before equity in earnings of subsidiaries 5,797 4,244 11,501 11,887
Earnings from operations 5,797 4,244 11,501 11,887
Interest expense 72 96 264 336
Pretax earnings 5,725 4,148 11,237 11,551
Income tax expense 1,168 1,583 2,234 3,047
Net earnings available to common stockholders 4,557 2,565 9,003 8,504
Intersegment Eliminations [Member]        
Revenues [Abstract]        
Revenues (3,005) 2,901 (9,118) 8,652
Operating Expenses [Abstract]        
Other segment items (2,286) 2,006 (7,005) 5,642
Operating Expenses, Total 2,286 2,006 7,005 5,642
Operating Costs and Expenses [Abstract]        
Lease expense 691 643 2,029 2,254
Costs and Expenses, Total 2,977 2,649 9,034 7,896
Income (Loss) Attributable to Parent, before Tax [Abstract]        
Earnings from operations before equity in earnings of subsidiaries 28 252 84 756
Equity in earnings of subsidiaries (21,018) 17,956 (48,523) 43,980
Earnings from operations 21,046 18,208 48,607 44,736
Other interest income (72) 96 (264) 336
Interest expense 100 348 348 1,092
Pretax earnings 21,018 17,956 48,523 43,980
Net earnings available to common stockholders $ 21,018 $ 17,956 $ 48,523 $ 43,980