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Indebtedness (Long-Term Debt) (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Mar. 31, 2016
Debt Instrument [Line Items]    
Debt $ 95,349 $ 120,802
Less: current portion (included in Other liabilities) (1,385) (1,139)
Long-term debt 93,964 119,663
Revolving credit agreement    
Debt Instrument [Line Items]    
Debt 93,800 119,000
Other    
Debt Instrument [Line Items]    
Debt $ 1,549 $ 1,802