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Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2020
Mar. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Shareholders' equity $ 1,416,247 $ 1,358,298 $ 1,227,014 $ 1,170,971
Cumulative translation adjustment        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Shareholders' equity (20,400) (18,908)    
Unrealized loss on interest rate swaps, net of tax of $388 and $543, respectively        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Shareholders' equity (1,299) (1,819)    
Other comprehensive loss, cash flow hedge, reclassification tax 388 543    
Unrecognized net gain (loss) on pension plans, net of tax of $(276) and $(276), respectively        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Shareholders' equity 926 926    
Other comprehensive loss, cash flow hedge, reclassification tax (276) (276)    
Accumulated other comprehensive loss, net of tax        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Shareholders' equity $ (20,773) $ (19,801) $ (33,262) $ (44,161)