Other Charges (Details) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Dec. 31, 2015 USD ($) store	Dec. 31, 2014 USD ($)
Core Us [Member] | 2015 RACFI Store Sale [Member]
Restructuring Cost and Reserve [Line Items]
Gain (Loss) on Disposition of Business			$ 7,200
Number of Stores Sold | store			40
Core Us [Member] | Store Consolidation Plan [Member]
Restructuring Cost and Reserve [Line Items]
Store Consolidation Plan - Number of Stores Closed		150
Restructuring charges, total		$ 4,900
Restructuring charge, early lease termination		1,300
Restructuring charge, accelerated depreciation and asset write-off		3,200
Restructuring charge, store decommissioning		$ 400
Core Us [Member] | 2015 Canada Store Sale [Member]
Restructuring Cost and Reserve [Line Items]
Gain (Loss) on Disposition of Business			$ 300
Number of Stores Sold | store			14
Core Us [Member] | 2015 Other Store Sale [Member]
Restructuring Cost and Reserve [Line Items]
Gain (Loss) on Disposition of Business			$ 1,100	$ 1,800
Core Us [Member] | 2015 Core U.S. Store Consolidation Plan [Member]
Restructuring Cost and Reserve [Line Items]
Store Consolidation Plan - Number of Stores Closed	65
Restructuring charges, total	$ 4,300
Restructuring charge, early lease termination	2,700
Restructuring charge, accelerated depreciation and asset write-off	1,200
Restructuring charge, store decommissioning	$ 300
Mexico [Member] | Mexico Store Closures [Member]
Restructuring Cost and Reserve [Line Items]
Store Consolidation Plan - Number of Stores Closed			34,000
Restructuring charge, accelerated depreciation and asset write-off			$ 3,000
Employee Severance [Member] | Corporate Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges, total			$ 2,000	2,800
Software Development [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets Held-for-use				$ 4,600