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Stock Repurchase Plan - Additional Information (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Oct. 28, 2017 | Oct. 28, 2017 | Mar. 17, 2017
Stockholders Equity Note [Abstract] |  |  |
Stock repurchase program, authorized amount |  |  | $ 12,000,000
Stock repurchase program, expiration date |  | Feb. 03, 2018 |
Common stock shares repurchased | 0 | 1,878,434 |
Stock repurchased, average price per share |  | $ 2.49 |
Stock repurchase program, remaining amount | $ 7,300,000 | $ 7,300,000 |

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- Definition Expiration date for the purchase of an entity's own shares under a stock repurchase plan, in the CCYY-MM-DD format. + References No definition available. + Details
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- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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