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Store Closing Costs (Details Textual) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012 Store
Store Closing Costs (Textual) [Abstract]
Number of Stores	407
Q2 [Member]
Store Closing Costs (Textual) [Abstract]
Number of Stores	2
Expense related to the closure of underperforming stores	$ 0.7
Q3 [Member]
Store Closing Costs (Textual) [Abstract]
Number of Stores	1
Expense related to the closure of underperforming stores	$ 0.4

The charge against earnings in the period, comprised of costs incurred associated with an exit or disposal activity other than for a discontinued operations as defined under generally accepted accounting principles. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

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