Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jul. 29, 2017	Jul. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (11,232)	$ (6,552)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	32,546	26,212
Net non-cash charges resulting from inventory step-up	1,860	3,401
Amortization of debt discount	15,018	14,213
Excess tax shortfall from exercise of stock options		1,769
Stock-based compensation expense	36,166	14,303
Other non-cash interest expense	2,314	2,222
Change in assets and liabilities—net of acquisition:
Accounts receivable	(617)	(422)
Merchandise inventories	140,331	(52,119)
Prepaid expense and other assets	37,329	(16,403)
Accounts payable and accrued expenses	29,874	(63,483)
Deferred revenue and customer deposits	30,349	15,312
Other current liabilities	2,269	(23,310)
Deferred rent and lease incentives	1,166	2,257
Other non-current obligations	(975)	8,951
Net cash provided by (used in) operating activities	316,398	(73,649)
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(39,362)	(70,999)
Construction related deposits	(5,285)	(3,661)
Purchase of trademarks and domain names	(39)	(164)
Proceeds from sale of assets held for sale—net	15,123
Purchase of investments	(16,109)	(136,799)
Maturities of investments	46,890	77,313
Sales of investments	145,020	31,896
Acquisition of business—net of cash acquired		(116,100)
Net cash provided by (used in) investing activities	146,238	(218,514)
CASH FLOWS FROM FINANCING ACTIVITIES
Borrowing under promissory note	14,000
Repayments under promissory note	(117)
Debt issuance costs	(7,939)
Repurchases of common stock—including commissions	(1,000,326)
Payments on build-to-suit lease transactions	(4,601)
Proceeds from exercise of stock options	11,170	288
Excess tax shortfall from exercise of stock options		(1,769)
Tax withholdings related to issuance of stock-based awards	(3,106)	(946)
Payments on capital leases	(158)	(166)
Net cash used in financing activities	(528,077)	(2,593)
Effects of foreign currency exchange rate translation	55	452
Net decrease in cash and cash equivalents	(65,386)	(294,304)
Cash and cash equivalents
Beginning of period	87,023	331,467
End of period	21,637	37,163
Non-cash transactions:
Property and equipment additions due to build-to-suit lease transactions	27,340	9,676
Property and equipment additions in accounts payable and accrued expenses at period-end	23,860	22,903
Property and equipment additions from use of construction related deposits	19,338	$ 2,659
Property and equipment acquired under capital lease	753
Asset Based Credit Facility [Member]
CASH FLOWS FROM FINANCING ACTIVITIES
Borrowing	323,000
Repayments under asset based credit facility	(40,000)
Term Loan [Member]
CASH FLOWS FROM FINANCING ACTIVITIES
Borrowing	$ 180,000