Shareholders' Equity - Private Placement Securities Purchase Agreement and Registered Direct Offering (Details) - USD ($) $ / shares in Units, $ in Thousands			12 Months Ended
	May 02, 2019	May 30, 2017	Feb. 01, 2020	Feb. 02, 2019	Feb. 03, 2018
Private Placement Securities Purchase Agreements and Registered Direct Offering [Line Items]
Shares sold	800,000	400,827
Price per share of common stock	$ 7.50	$ 11.20
Warrant exercise period	5 years		5 years
Standstill Provision, Duration of Agreement	2 years
Vendor exclusivity agreement, Duration of contract	5 years
Proceeds from securities issuance	$ 6,000
Securities issuance costs	175	$ 323
Proceeds from issuance of common stock		$ 4,500	$ 6,000	$ 0	$ 4,628
Market value of warrants on the grant date	$ 193
Warrants Granted May 2019 [Member]
Private Placement Securities Purchase Agreements and Registered Direct Offering [Line Items]
Warrant exercise price per share			$ 15.00
Warrant expiration date			May 02, 2024
Warrant [Member]
Private Placement Securities Purchase Agreements and Registered Direct Offering [Line Items]
Number of common shares purchasable by warrant	350,000
Warrant exercise price per share	$ 15.00
Directors and Executive Officers [Member]
Private Placement Securities Purchase Agreements and Registered Direct Offering [Line Items]
Price per share of common stock		$ 11.50