Accounts Receivable Discount Programs (Details) (USD $)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Accounts Receivable Discount Programs [Abstract]
Receivables discounted	$ 210,752,000	$ 188,536,000
Weighted average days	337 days	336 days
Weighted average discount rate (in hundredths)	2.20%	2.70%
Amount of discount as interest expense	$ 4,336,000	$ 4,654,000