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Accounts Receivable Discount Programs (Details) - USD ($)
 9 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Accounts Receivable Discount Programs [Abstract]    
Receivables discounted $ 254,795,000 $ 248,443,000
Weighted average days 341 days 342 days
Annualized weighted average discount rate 2.90% 2.20%
Amount of discount as interest expense $ 6,864,000 $ 5,241,000