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Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Income (Detail) - USD ($)
$ in Thousands
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Accumulated Other Comprehensive Income Loss [Line Items]            
Total Stockholders' Equity $ 872,640 $ 874,974 $ 894,000 $ 995,470 $ 1,014,423 $ 1,042,944
Total accumulated other comprehensive loss            
Accumulated Other Comprehensive Income Loss [Line Items]            
Total Stockholders' Equity (69,021) $ (76,340) (55,727) $ 1,574 $ 2,336 $ 6,144
Net unrealized loss on securities available for sale            
Accumulated Other Comprehensive Income Loss [Line Items]            
AOCI before tax, attributable to parent (150,841)   (118,031)      
Tax effect 43,523   34,104      
Total Stockholders' Equity (107,318)   (83,927)      
Fair value adjustments on derivatives            
Accumulated Other Comprehensive Income Loss [Line Items]            
AOCI before tax, attributable to parent 54,068   39,805      
Tax effect (15,680)   (11,542)      
Total Stockholders' Equity 38,388   28,263      
Benefit plan adjustments            
Accumulated Other Comprehensive Income Loss [Line Items]            
AOCI before tax, attributable to parent (128)   (89)      
Tax effect 37   26      
Total Stockholders' Equity $ (91)   $ (63)