BASIS OF PRESENTATION- Summary of Revision for Sublease Rent Income (Details) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Error Corrections and Prior Period Adjustments Restatement
Revenue	$ 668,905	$ 629,110	$ 683,358	$ 689,564	$ 681,266	$ 617,980	$ 666,911	$ 685,537	$ 684,578	$ 2,683,298	$ 2,655,006
Cost of sales, including warehousing, distribution and occupancy	433,060	400,876	432,714	433,232	431,833	397,787	419,163	426,957	430,859	1,698,655	1,674,766
Other long-term assets	34,476	38,555								38,555
Other long-term liabilities	58,076	59,016								59,016
Debt issuance costs	$ (3,039)	(3,276)								(3,276)
Prior to revision
Error Corrections and Prior Period Adjustments Restatement
Revenue		618,201	672,244	678,520	670,247	607,156	656,326	675,216	674,456	2,639,212	2,613,154
Cost of sales, including warehousing, distribution and occupancy		389,967	421,600	422,188	420,814	386,963	408,578	416,636	420,737	1,654,569	1,632,914
Other long-term assets		32,891								32,891
Other long-term liabilities		53,352								53,352
Revision
Error Corrections and Prior Period Adjustments Restatement
Revenue		10,909	11,114	11,044	11,019	10,824	10,585	10,321	10,122	44,086	41,852
Cost of sales, including warehousing, distribution and occupancy		10,909	$ 11,114	$ 11,044	$ 11,019	$ 10,824	$ 10,585	$ 10,321	$ 10,122	44,086	$ 41,852
Other long-term assets		5,664								5,664
Other long-term liabilities		5,664								5,664
Accounting Standards Update 2015-03 | Other long-term assets
Error Corrections and Prior Period Adjustments Restatement
Debt issuance costs		3,300								3,300
Accounting Standards Update 2015-03 | Long-term debt
Error Corrections and Prior Period Adjustments Restatement
Debt issuance costs		$ (3,300)								$ (3,300)