Fair Value Measurement (Details) $ in Thousands |
3 Months Ended |
|---|---|
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Mar. 31, 2017
USD ($)
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| Westpark Contingently Issuable Warrants [Member] | |
| Fair value, Beginning Balance | $ 12 |
| Change in fair value | 0 |
| Fair value, Ending Balance | 12 |
| NSC Contingently Issuable Warrants [Member] | |
| Fair value, Beginning Balance | 302 |
| Change in fair value | (3) |
| Fair value, Ending Balance | 299 |
| Warrant [Member] | |
| Fair value, Beginning Balance | 314 |
| Change in fair value | (3) |
| Fair value, Ending Balance | $ 311 |
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- Definition Amount of increase (decrease) of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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