Exit Activities (Summary of Closure Reserves for Stores, Administrative Office and Distribution Facilities and Reserves for Employee Separation Costs) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Store Closure Liabilities [Member]
Beginning balance:	$ 13,971	$ 15,777
Additions and accretion	695	902
Payments	(3,634)	(3,121)
Revisions to estimates	280	413
Ending balance:	11,312	13,971
Administrative Office and Distribution Facilities Closure Liabilities [Member]
Beginning balance:	5,608	7,653
Additions and accretion	314	446
Payments	(2,593)	(2,330)
Revisions to estimates	215	(161)
Ending balance:	3,544	5,608
Employee Separation Liabilities [Member]
Beginning balance:	1,156	2,080
Additions and accretion	0	0
Payments	(912)	(1,519)
Revisions to estimates	(244)	595
Ending balance:	$ 0	$ 1,156