Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014
Income Statement [Abstract]
Net sales	$ 902,153	$ 743,810	$ 1,759,659	$ 1,466,416
Cost of sales, buying and occupancy	638,514	519,762	1,238,227	1,018,509
Gross profit	263,639	224,048	521,432	447,907
Direct store expenses	177,381	143,155	340,571	281,386
Selling, general and administrative expenses	23,390	23,100	47,417	45,579
Store pre-opening costs	2,507	2,420	5,280	3,367
Store closure and exit costs	315	(200)	1,544	333
Income from operations	60,046	55,573	126,620	117,242
Interest expense	(4,437)	(6,520)	(10,305)	(12,987)
Other income	112	100	174	196
Loss on extinguishment of debt	(5,481)		(5,481)
Income before income taxes	50,240	49,153	111,008	104,451
Income tax provision	(18,918)	(19,002)	(42,219)	(40,567)
Net income	$ 31,322	$ 30,151	$ 68,789	$ 63,884
Net income per share:
Basic	$ 0.20	$ 0.20	$ 0.45	$ 0.43
Diluted	$ 0.20	$ 0.20	$ 0.44	$ 0.42
Weighted average shares outstanding:
Basic	153,393	149,681	152,814	148,720
Diluted	155,949	154,039	155,728	153,670