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v3.21.1

Shareholders' Equity (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 29, 2020 | Jan. 31, 2020 | Dec. 31, 2016 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Warrants to purchase common stock | 50,000 |  |  |  |  |
Warrant exercise price |  |  |  | $ 3.92 | $ 11.30 |
Fair value of warrants |  |  |  | $ (23) | $ 352 |
Proceeds from warrant exercise | $ 565 |  |  | 565 |  |
Warrant liability |  |  |  | 95 | 73 |
Stock-based compensation expense |  |  |  | $ 211 | $ 41 |
Stock option, granted |  |  |  |  |  |
Stock option, exercised |  |  |  |  |  |
Stock option, forfeited |  |  |  |  | 500 |
Stock option, expired |  |  |  | 166 |  |
Chief Executive Officer [Member] |  |  |  |  |  |
Restricted shares granted during period, shares |  | 48,000 |  |  |  |
Chief Executive Officer [Member] | Vest After One Year [Member] |  |  |  |  |  |
Restricted shares granted during period, shares |  | 24,000 |  |  |  |
Chief Executive Officer [Member] | Vest After Two Year [Member] |  |  |  |  |  |
Restricted shares granted during period, shares |  | 24,000 |  |  |  |
Member of Board [Member] |  |  |  |  |  |
Restricted shares granted during period, shares |  | 23,000 |  |  |  |
Vesting date |  | Jan. 28, 2021 |  |  |  |
Original Warrant Agreement [Member] | Maximum [Member] |  |  |  |  |  |
Warrant exercise price |  |  |  |  |  | $ 20.50
Original Warrant Agreement [Member] | Minimum [Member] |  |  |  |  |  |
Warrant exercise price |  |  |  |  |  | $ 11.30
Common Stock [Member] |  |  |  |  |  |
Number of share issued |  |  |  | (327) |  |
Registered Direct Offering [Member] |  |  |  |  |  |
Number of share issued |  |  | 100,000 |  |  |
Net share price |  |  | $ 15.00 |  |  |
Proceeds from warrants |  |  | $ 1,320 |  |  |
Registered Direct Offering [Member] | Warrant [Member] |  |  |  |  |  |
Warrants to purchase common stock |  |  | 100,000 |  |  |
Warrant exercise price |  |  | $ 20.05 |  |  |
Fair value of warrants |  |  | $ 1,240 |  |  |
Registered Direct Offering [Member] | Common Stock [Member] |  |  |  |  |  |
Fair value of warrants |  |  | $ 80 |  |  |
Underwritten offering [Member] |  |  |  |  |  |
Number of share issued |  |  |  | 1,150,000 |  |
Net share price |  |  |  | $ 3.92 |  |
Stock Options [Member] |  |  |  |  |  |
Stock-based compensation expense |  |  |  | $ 0 | $ 41 |
Stock option, granted |  |  |  |  |  |
Stock option, exercised |  |  |  |  |  |
Stock option, forfeited |  |  |  |  |  |
Stock option, expired |  |  |  | 166 |  |
Number of unvested stock options forfeited |  |  |  |  | 500 |
Restricted Stock [Member] |  |  |  |  |  |
Stock-based compensation expense |  |  |  | $ 211 |  |
Unrecognized share based compensation |  |  |  | $ 137 |  |

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