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Equity details textual (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Equity [Abstract]        
Dividends per share $ 0.20 $ 0.20    
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ 1,317,963 $ 1,298,751 $ 1,288,599 $ 1,314,168
Net income 23,466 30,369    
Other comprehensive income (loss), net of tax 34,341 (17,809)    
Stock Issued During Period, Value, Dividend Reinvestment Plan 42 45    
Stock Issued During Period, Value, Employee Benefit Plan 2,127 1,638    
Stock Repurchased During Period, Value (15,030) (13,725)    
Dividends, Common Stock, Cash (15,582) (15,935)    
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 1,317,963 1,298,751 1,288,599 1,314,168
Net income 23,466 30,369    
Other comprehensive income (loss), net of tax 34,341 (17,809)    
Stock Issued During Period, Value, Dividend Reinvestment Plan 42 45    
Stock Issued During Period, Value, Employee Benefit Plan 2,127 1,638    
Stock Repurchased During Period, Value 15,030 13,725    
Dividends, Common Stock, Cash $ 15,582 $ 15,935    
Dividends per share $ 0.20 $ 0.20    
Common Stock [Member]        
Equity [Abstract]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ 97,145 $ 99,773 97,361 99,794
Stock Issued During Period, Value, Dividend Reinvestment Plan 2 2    
Stock Issued During Period, Value, Employee Benefit Plan 534 610    
Stock Repurchased During Period, Value (752) (633)    
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 97,145 99,773 97,361 99,794
Stock Issued During Period, Value, Dividend Reinvestment Plan 2 2    
Stock Issued During Period, Value, Employee Benefit Plan 534 610    
Stock Repurchased During Period, Value 752 633    
Additional Paid-in Capital [Member]        
Equity [Abstract]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 403,975 453,385 416,620 465,406
Stock Issued During Period, Value, Dividend Reinvestment Plan 40 43    
Stock Issued During Period, Value, Employee Benefit Plan 1,593 1,028    
Stock Repurchased During Period, Value (14,278) (13,092)    
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 403,975 453,385 416,620 465,406
Stock Issued During Period, Value, Dividend Reinvestment Plan 40 43    
Stock Issued During Period, Value, Employee Benefit Plan 1,593 1,028    
Stock Repurchased During Period, Value 14,278 13,092    
Retained Earnings [Member]        
Equity [Abstract]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 1,177,023 1,138,712 1,170,482 1,124,590
Net income 22,123 30,057    
Dividends, Common Stock, Cash (15,582) (15,935)    
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 1,177,023 1,138,712 1,170,482 1,124,590
Net income 22,123 30,057    
Dividends, Common Stock, Cash 15,582 15,935    
AOCI Attributable to Parent [Member]        
Equity [Abstract]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest (400,970) (431,512) (434,588) (414,343)
Other comprehensive income (loss), net of tax 33,618 (17,169)    
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest (400,970) (431,512) (434,588) (414,343)
Other comprehensive income (loss), net of tax 33,618 (17,169)    
Noncontrolling Interest [Member]        
Equity [Abstract]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 40,790 38,393 38,724 38,721
Net income 1,343 312    
Other comprehensive income (loss), net of tax 723 (640)    
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 40,790 38,393 $ 38,724 $ 38,721
Net income 1,343 312    
Other comprehensive income (loss), net of tax $ 723 $ (640)