Short-term investments, cash and cash equivalents, and Fair Value (Details Narrative) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended |
|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2018 |
|
| Fair Value Disclosures [Abstract] | ||
| Unrealized gains and losses from available-for-sale securities | $ 0 | $ 0 |
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of investments, not including unrealized gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, held at each balance sheet date and included in earnings for the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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