Accounts Receivable Discount Programs (Details) - USD ($)	3 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Accounts Receivable Discount Programs [Abstract]
Receivables discounted	$ 80,649,000	$ 79,247,000
Weighted average days	341 days	342 days
Annualized weighted average discount rate	2.70%	2.10%
Amount of discount as interest expense	$ 2,068,000	$ 1,579,000