Other Assets (Details) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
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Other assets | $ 1,905 | $ 1,653 | |||||||
Less: current portion | [1] | (275) | |||||||
Other assets, non-current | 1,630 | 1,653 | |||||||
Alameda Security Deposit [Member] | |||||||||
Other assets | [1] | 597 | 593 | ||||||
CD For Green Bank Collateral Security [Member] | |||||||||
Other assets | [2] | 1,012 | 1,000 | ||||||
Nevada Sales And Use Tax Deposit [Member] | |||||||||
Other assets | 49 | ||||||||
Facility Closure Trust Deposit [Member] | |||||||||
Other assets | [3] | 100 | |||||||
Various Other Assets [Member] | |||||||||
Other assets | $ 147 | $ 60 | |||||||
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