Income Per Share (Schedule of Earnings Per Share, Basic and Diluted) (Details) (USD $)	3 Months Ended
	Jul. 26, 2013	Jul. 27, 2012
Income Per Share [Abstract]
Net income	$ 8,673,926	$ 8,075,033
Basic weighted average shares outstanding (in Shares)	27,513,191	27,493,419
Stock Options	332,304	443,818
Diluted weighted average shares outstanding (in Shares)	27,845,495	27,937,237
Basic income per share (in Dollars per Share)	$ 0.32	$ 0.29
Diluted income per share (in Dollars per Share)	$ 0.31	$ 0.29