Exit Activities (Summary of Closure Reserves for Stores and Administrative Office and Distribution Facilities) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Store Closure Liabilities [Member]
Beginning balance:	$ 11,312
Additions and accretion	310
Payments	(1,579)
Revisions to estimates	(490)
Ending balance:	9,553
Administrative Office and Distribution Facilities Closure Liabilities [Member]
Beginning balance:	3,544
Additions and accretion	101
Payments	(1,196)
Ending balance:	$ 2,449