Stock-Based Compensation - Stock Option Activity (Details) - USD ($)	9 Months Ended
	Nov. 03, 2018	Oct. 28, 2017
Number of Shares
Options granted	153,888	30,000
Employee Stock Plan, 2006 Plan and 2016 Plan
Number of Shares
Outstanding options at beginning of year	1,195,910
Options granted	153,888
Options expired and canceled	(366,626)
Outstanding options at end of quarter	983,172
Options exercisable at end of quarter	829,284
Weighted-average exercise price per option
Outstanding options at beginning of year	$ 4.80
Options granted	2.48
Options expired and canceled	4.73
Outstanding options at end of quarter	4.49
Options exercisable at end of quarter	$ 4.87
Weighted-average remaining contractual term
Outstanding options at end of quarter	5 years 1 month 6 days
Options exercisable at end of quarter	4 years 3 months 18 days
Aggregate Intrinsic Value
Outstanding options at beginning of year	$ 21,750
Options expired and canceled	2,000
Outstanding options at end of quarter	144,396
Options exercisable at end of quarter	$ 26,308