Stock Repurchase Program (Details) (USD $)	1 Months Ended		9 Months Ended		42 Months Ended
	Nov. 30, 2011	Apr. 30, 2008	Oct. 02, 2011	Oct. 02, 2011 Common Stock [Member]	Oct. 02, 2011 Common Stock [Member]
Stock Repurchase Program (Textual) [Abstract]
Common stock repurchased, shares				337,078	1,375,875
Common stock repurchased, value			$ 10,000,000	$ 10,000,000	$ 30,000,000
Shares authorized to be repurchased	$ 80,000,000	$ 50,000,000