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Basis of Presentation and Summary of Significant Accounting Policies - Share Repurchase Program (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended 15 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Apr. 30, 2025
Accelerated Share Repurchases [Line Items]            
Authorized amount repurchase of common stock           $ 100,000
Share repurchases (in shares) 1,000 586 2,900 1,500    
Aggregate repurchased value, excluding excise taxes $ 21,000 $ 12,500 $ 66,200 $ 33,100    
Shares repurchased, average price per share (in usd per share) $ 21.01 $ 21.38 $ 23.04 $ 22.20    
Aggregate repurchased value $ 21,229 $ 12,515 $ 66,792 $ 33,077    
Remaining authorized repurchase amount $ 21,300   $ 21,300   $ 21,300  
April 2025 Share Repurchase Program            
Accelerated Share Repurchases [Line Items]            
Share repurchases (in shares)         3,500  
Shares repurchased, average price per share (in usd per share)         $ 22.75  
Aggregate repurchased value         $ 78,700