Stock-Based Compensation - Stock Option Activity (Details) - USD ($)	6 Months Ended
Aug. 04, 2018	Jul. 29, 2017
Number of Shares
Options granted	153,888	0
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	(203,244)
Outstanding options at end of quarter	1,146,554
Options exercisable at end of quarter	977,666
Weighted-average exercise price per option
Outstanding options at beginning of year	$ 4.80
Options granted	2.48
Options expired and canceled	4.53
Outstanding options at end of quarter	4.54
Options exercisable at end of quarter	$ 4.91
Weighted-average remaining contractual term
Outstanding options at end of quarter	4 years 8 months 12 days
Options exercisable at end of quarter	3 years 10 months 24 days
Aggregate Intrinsic Value
Outstanding options at beginning of year	$ 21,750
Outstanding options at end of quarter	6,750
Options exercisable at end of quarter	$ 2,250

Share based compensation arrangement by share based payment award aggregate intrinsic value.

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Share based compensation arrangement by share based payment award options weighted average remaining contractual term.

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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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- Definition

For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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- Definition

Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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