v3.26.1
Per Share Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
Earnings Per Share [Abstract]        
Undistributed Earnings (Loss) Available to Common Shareholders, Basic $ 109,771 $ 70,738 $ 200,797 $ 125,897
Noncontrolling Interest, Change in Redemption Value     (723) (1,401)
Noncontrolling Interest, Period Increase (Decrease) $ (138) $ 86 $ (551) $ (1,058)
Weighted Average Number of Shares Outstanding, Basic 19,926,397 19,969,618 19,906,511 19,979,896
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements 259,988 243,824 273,195 249,981
Weighted Average Number of Shares Outstanding, Diluted 20,186,385 20,213,442 20,179,707 20,229,877
Earnings Per Share, Basic $ 5.51 $ 3.54 $ 10.09 $ 6.30
Earnings Per Share, Diluted $ 5.44 $ 3.50 $ 9.95 $ 6.22
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Net Income (Loss) Available to Common Stockholders, Basic $ 109,909 $ 70,652 $ 201,348 $ 126,955
Phantom Share Units (PSUs) [Member]        
Earnings Per Share [Abstract]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 69 16,635 1,347 33,179
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 69 16,635 1,347 33,179