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Per Share Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Earnings Per Share [Abstract]    
Undistributed Earnings (Loss) Available to Common Shareholders, Basic $ 55,159 $ 38,174
Noncontrolling Interest, Change in Redemption Value $ (1,514) $ (3,683)
Weighted Average Number of Shares Outstanding, Basic 19,989,951 20,199,587
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements 255,891 235,561
Weighted Average Number of Shares Outstanding, Diluted 20,245,842 20,435,148
Earnings Per Share, Basic $ 2.76 $ 1.89
Earnings Per Share, Diluted $ 2.72 $ 1.87
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Net Income (Loss) Available to Common Stockholders, Basic $ 56,303 $ 40,956
Stockholders' Equity, Period Increase (Decrease) $ (1,144) $ (2,782)
Phantom Share Units (PSUs) [Member]    
Earnings Per Share [Abstract]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 53,050 64,500
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 53,050 64,500