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Accounts Receivable (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Mar. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable, gross $ 106,853 $ 97,764
Less allowances for discounts, returns and uncollectible accounts (11,606) (9,906)
Accounts receivable, net 95,247 87,858
Trade accounts receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable, gross 105,592 95,411
Other receivables    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable, gross $ 1,261 $ 2,353