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Derivative Instruments (Narratives) (Details) - USD ($)
3 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Derivatives, Fair Value [Line Items]    
Payments to Acquire Property, Plant, and Equipment $ (3,648,000) $ 1,088,000
Reclassify Next Year [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Instruments in Hedges, at Fair Value, Net 821,000  
Designated as Hedging Instrument | Cross Currency Interest Rate Contract [Member]    
Derivatives, Fair Value [Line Items]    
Derivative, Notional Amount 143,625,000  
Derivative Instruments in Hedges, at Fair Value, Net 566,000  
Designated as Hedging Instrument | Foreign exchange contracts    
Derivatives, Fair Value [Line Items]    
Derivative, Notional Amount 4,230,000  
Derivative Instruments in Hedges, at Fair Value, Net 98,000  
Designated as Hedging Instrument | Interest Rate Swap [Member]    
Derivatives, Fair Value [Line Items]    
Derivative, Notional Amount $ 111,953,000  
Maximum [Member]    
Derivatives, Fair Value [Line Items]    
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate 50.00%  
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate 70.00%  
Minimum [Member]    
Derivatives, Fair Value [Line Items]    
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate 30.00%  
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate 50.00%