Exit Activities (Summary of Closure Reserves for Stores and Administrative Office and Distribution Facilities) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012
Store Closure Liabilities [Member]
Beginning balance:	$ 11,312
Additions and accretion	451
Payments	(2,296)
Revisions to estimates	(561)
Ending balance:	8,906
Administrative Office and Distribution Facilities Closure Liabilities [Member]
Beginning balance:	3,544
Additions and accretion	140
Payments	(1,770)
Revisions to estimates	0
Ending balance:	$ 1,914