Stock Buyback (Details) (USD $)	0 Months Ended	3 Months Ended	6 Months Ended			0 Months Ended
	Apr. 23, 2014	Sep. 28, 2014	Sep. 28, 2014	Sep. 29, 2013	Apr. 23, 2014	Oct. 31, 2014 Subsequent Event [Member]
Stock Buyback [Line Items]
Number of shares repurchased (in shares)		7,733				33,272
Shares repurchased		$ 200,000				$ 1,000,000
Average cost per share (in dollars per share)		$ 29.86				$ 29.32
Amount available for repurchase						8,800,000
Stock authorized to purchase on non-accelerated basis					10,000,000
Stock repurchase period	24 months
Aggregate authorized common stock repurchase limit under loan agreements		30,000,000	30,000,000
Remaining authorized common stock repurchase limit under loan agreements		16,100,000	16,100,000
Tax withholding for share based compensation			$ 1,411,800	$ 1,428,400