Consolidated Statements of Stockholders' Equity (Deficit) - USD ($)	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings (Accumulated Deficit)	Treasury Stock	Total
Balances at Jan. 28, 2017	$ 4,000	$ 790,866,000	$ (1,692,000)	$ 154,174,000	$ (19,523,000)	$ 923,829,000
Balances, shares at Jan. 28, 2017	40,828,633				294,888
Stock-based compensation		50,283,000				50,283,000
Issuance of restricted stock	$ 0	0	0	0	$ 0	0
Issuance of restricted stock, Shares	15,631
Vested and delivered restricted stock units		(4,504,000)				(4,504,000)
Vested and delivered restricted stock units, Shares	197,660
Exercise of stock options		23,643,000				23,643,000
Exercise of stock options, Shares	695,546
Repurchases of common stock	$ (2,000)				$ (1,000,326,000)	$ (1,000,328,000)
Repurchases of common stock, Shares	(20,220,132)				20,220,132
Retirement of treasury stock		(19,523,000)			$ 19,523,000
Retirement of treasury stock, Shares					(294,888)	(294,888)
Net income (loss)				(2,599,000)		$ (2,599,000)
Net (losses) gains from foreign currency translation			1,510,000			1,510,000
Net unrealized holding gains on investments			11,000			11,000
Balances at Feb. 03, 2018	$ 2,000	840,765,000	(171,000)	151,575,000	$ (1,000,326,000)	(8,155,000)
Balances, shares at Feb. 03, 2018	21,517,338				20,220,132
Stock-based compensation		23,557,000				23,557,000
Issuance of restricted stock, Shares	6,405
Vested and delivered restricted stock units		(9,502,000)				(9,502,000)
Vested and delivered restricted stock units, Shares	122,177
Exercise of stock options		44,024,000				44,024,000
Exercise of stock options, Shares	882,272
Repurchases of common stock					$ (250,243,000)	(250,243,000)
Repurchases of common stock, Shares	(2,050,379)				2,050,379
Retirement of treasury stock		(591,519,000)		(658,807,000)	$ 1,250,326,000	(1,250,300,000)
Retirement of treasury stock, Shares					(22,267,711)
Equity component value of convertible note issuance-net		89,933,000				89,933,000
Sale of common stock warrant		51,021,000				51,021,000
Purchase of convertible note hedge		(91,857,000)				(91,857,000)
Impact of Topic 606 adoption				(21,036,000)		(21,036,000)
Net income (loss)				135,731,000		135,731,000
Net (losses) gains from foreign currency translation			(2,163,000)			(2,163,000)
Balances at Feb. 02, 2019	$ 2,000	356,422,000	(2,334,000)	(392,537,000)	$ (243,000)	$ (38,690,000)
Balances, shares at Feb. 02, 2019	20,477,813				2,800
Balances, shares at Feb. 02, 2019						20,477,813
Stock-based compensation		21,406,000				$ 21,406,000
Issuance of restricted stock, Shares	7,014
Vested and delivered restricted stock units		(7,069,000)				(7,069,000)
Vested and delivered restricted stock units, Shares	109,062
Exercise of stock options		27,138,000				27,138,000
Exercise of stock options, Shares	643,090
Repurchases of common stock					$ (250,032,000)	(250,032,000)
Repurchases of common stock, Shares	(2,167,396)				2,167,396
Retirement of treasury stock		(13,180,000)		(237,091,000)	$ 250,271,000	(250,300,000)
Retirement of treasury stock, Shares					(2,170,154)
Equity component value of convertible note issuance-net		87,070,000				87,070,000
Sale of common stock warrant		50,225,000				50,225,000
Purchase of convertible note hedge		(91,350,000)				(91,350,000)
Shares issued in connection with warrant agreements	167,056
Net income (loss)				220,375,000		220,375,000
Net (losses) gains from foreign currency translation			(426,000)			(426,000)
Conversion of convertible senior notes					$ 4,000	4,000
Conversion of convertible senior notes, Shares	42				(42)
Balances at Feb. 01, 2020	$ 2,000	$ 430,662,000	$ (2,760,000)	$ (409,253,000)		$ 18,651,000
Balances, shares at Feb. 01, 2020	19,236,681
Balances, shares at Feb. 01, 2020						19,236,681