Earnings (Loss) Per Share - Summary of Basic and Diluted Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Nov. 03, 2019	Jul. 28, 2019	Apr. 28, 2019	Jan. 27, 2019	Oct. 28, 2018	Jul. 29, 2018	Apr. 29, 2018	Jan. 28, 2018	Nov. 03, 2019	Oct. 28, 2018
Numerator
Net income (loss)	$ (749)	$ (6,057)	$ (5,165)	$ (3,215)	$ (2,886)	$ (11,418)	$ (7,687)	$ (10,694)	$ (15,186)	$ (32,685)
Denominator
Basic weighted average number of shares (shares)	21,157	21,157	21,082	21,080	21,072	21,071	21,032	21,029	21,119	21,051
Dilutive weighted average number of shares (shares)	21,157	21,157	21,082	21,080	21,072	21,071	21,032	21,029	21,119	21,051
Per Share Data, Basic:
Net Income (loss) (USD per share)	$ (0.04)	$ (0.29)	$ (0.24)	$ (0.15)	$ (0.14)	$ (0.54)	$ (0.37)	$ (0.51)	$ (0.72)	$ (1.55)
Per Share Data, Diluted:
Net Income (loss) (USD per share)	$ (0.04)	$ (0.29)	$ (0.24)	$ (0.15)	$ (0.14)	$ (0.54)	$ (0.37)	$ (0.51)	$ (0.72)	$ (1.55)