Stock-Based Compensation - Schedule of Unrecognized Compensation Cost, Nonvested Awards (Details) - Employee Stock Option [Member] - USD ($) $ in Thousands |
9 Months Ended | 12 Months Ended | |
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Sep. 30, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Unrecognized stock-based compensation | $ 88 | $ 256 | $ 484 |
| Weighted average remaining period of recognition (in years) | 7 months 24 days | 1 year 1 month 17 days | 1 year 10 months 24 days |
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- Definition Unrecognized cost of unvested share-based compensation awards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Details
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