Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 03, 2019	Aug. 04, 2018	Aug. 03, 2019	Aug. 04, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 27,407	$ (38,356)	$ 58,601	$ (14,059)
Other comprehensive income (loss), net of income taxes:
Foreign currency translation gain (loss)	461	(1,365)	(253)	(6,050)
Unrealized net gain (loss) on debt securities	196	27	438	(317)
Reclassification adjustment for net losses (gains) realized in net income (loss)	23	12,260	(65)	14,165
Total other comprehensive income, net of income taxes	680	10,922	120	7,798
Total comprehensive income (loss)	$ 28,087	$ (27,434)	$ 58,721	$ (6,261)