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Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Income by Component (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance $ 833,797 $ 772,803 $ 530,149
Other comprehensive income (loss) before reclassification 4,495 15,867  
Amounts reclassified from other comprehensive loss to net income (6,129) (4,011)  
Total other comprehensive income (loss) (1,634) 11,856 10,087
Ending balance 882,063 833,797 772,803
Accumulated Other  Comprehensive  Loss      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (38,043) (49,899) (59,986)
Ending balance (39,677) (38,043) (49,899)
Retirement Obligations      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (12,800) (21,043)  
Other comprehensive income (loss) before reclassification (1,979) 7,755  
Amounts reclassified from other comprehensive loss to net income 4,083 488  
Total other comprehensive income (loss) 2,104 8,243  
Ending balance (10,696) (12,800) (21,043)
Foreign Currency      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (32,352) (28,079)  
Other comprehensive income (loss) before reclassification (433) (4,273)  
Amounts reclassified from other comprehensive loss to net income 0 0  
Total other comprehensive income (loss) (433) (4,273)  
Ending balance (32,785) (32,352) (28,079)
Change in Derivatives Qualifying as Hedges      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance 7,109 (777)  
Other comprehensive income (loss) before reclassification 6,907 12,385  
Amounts reclassified from other comprehensive loss to net income (10,212) (4,499)  
Total other comprehensive income (loss) (3,305) 7,886  
Ending balance $ 3,804 $ 7,109 $ (777)