Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2016	May. 02, 2015
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ (13,470)	$ 7,156
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization	12,554	9,979
Amortization of debt discount	7,057	3,250
Excess tax (benefit) shortfall from exercise of stock options	76	(1,075)
Stock-based compensation expense	3,998	5,299
Other non-cash interest expense	1,126	536
Change in assets and liabilities:
Accounts receivable	(3,504)	472
Merchandise inventories	(37,228)	(42,253)
Prepaid expense and other assets	(33,098)	(11,189)
Accounts payable and accrued expenses	(30,546)	7,673
Deferred revenue and customer deposits	10,972	3,046
Other current liabilities	(25,143)	1,444
Deferred rent and lease incentives	894	1,266
Other non-current obligations	20	17
Net cash used in operating activities	(106,292)	(14,379)
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(45,276)	(29,227)
Construction related deposits	(3,551)
Purchase of trademarks and domain names	(164)
Purchase of investments	(44,604)	(19,471)
Maturities of investments	54,368	15,000
Sales of investments	31,896
Net cash used in investing activities	(7,331)	(33,698)
CASH FLOWS FROM FINANCING ACTIVITIES
Payments on capital leases	(85)	(83)
Proceeds from exercise of stock options	296	2,221
Excess tax benefit (shortfall) from exercise of stock options	(76)	1,075
Tax withholdings related to issuance of stock-based awards	(141)	(376)
Net cash provided by (used in) financing activities	(6)	2,837
Effects of foreign currency exchange rate translation	888	73
Net decrease in cash and cash equivalents	(112,741)	(45,167)
Cash and cash equivalents
Beginning of period	349,897	148,934
End of period	237,156	103,767
Non-cash transactions:
Property and equipment additions in accounts payable and accrued expenses at period-end	10,721	8,380
Property and equipment additions due to build-to-suit lease transactions	7,775	47,404
Property and equipment additions from use of construction related deposits	$ 1,740	$ 2,942