Shareholders' Equity - Stock Purchase from NBCU (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Jan. 31, 2017	Feb. 03, 2018	Feb. 02, 2019
Class of Stock [Line Items]
Common stock repurchased from NBCU, Value		$ 5,055
Common stock, shares outstanding		65,290,458	67,919,349
NBCU [Member]
Class of Stock [Line Items]
Common stock repurchased from NBCU, Shares	4,400,000
Common stock repurchased from NBCU, Value	$ 5,000
Sale of stock, price per share	$ 1.12
Common stock, shares outstanding	2,741,849
Percentage of ownership in Company after transaction	4.50%