Stockholders' Equity - Schedule of Dividends Preferred Stock (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2018 |
Dec. 31, 2017 |
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| Preferred stock dividends | $ 20 | $ 20 |
| Series A Preferred Stock [Member] | ||
| Preferred stock dividends | 13 | 13 |
| Series A-1 Preferred Stock [Member] | ||
| Preferred stock dividends | $ 7 | $ 7 |
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- Definition Amount of paid and unpaid preferred stock dividends declared with the form of settlement in stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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