Shareholder Rights Plan (Details) (USD $)			3 Months Ended	1 Months Ended
	Apr. 27, 2012	Jul. 29, 2011	Dec. 28, 2011 September 22, 2011 Shareholders' Rights Plan [Member]	Apr. 27, 2012 April 9, 2012 Shareholders' Rights Plan [Member]	Apr. 27, 2012 April 9, 2012 Shareholders' Rights Plan [Member] Series A Junior Participating Preferred Stock [Member]
Shareholders' Rights Plan [Line Items]
Dividend declaration date			Sep. 22, 2011	Apr. 09, 2012
Dividend record date			Oct. 03, 2011	Apr. 20, 2012
Dividend payment date				Apr. 20, 2012
Rights expiration date			Dec. 28, 2011	Apr. 09, 2015
Number of common shares allowed for purchase under each right (in shares)			1	1
Par value of common share outstanding (in dollars per share)	$ 0.01	$ 0.01		$ 0.01
Number of preferred shares purchaseable under each right (in shares)					0.01
Exercise price of each right (in dollars per right)					$ 200
Common share equivalent for each preferred share portion (in shares)					1
Period during which rights are not exercisable (in days)				10D
Minimum common stock ownership required to become Acquiring Person (in hundredths)				20.00%
Minimum periodic dividend to which holders of the preferred shares will be entitled (in dollars per share)				$ 0.01
Minimum amount to which holders of the preferred shares will be entitled upon liquidation (in dollars per share)				$ 1
Redemption of rights (in dollars per right)				$ 0.01
Minimum offering period (in days)				60D
Subsequent offering period (in days)				20D
Common stock ownership for rights extinguishment (in shares)				50.00%
Number of common shares into which each right is exchangeable (in shares)				1