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Common Stock (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended
	Apr. 20, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Warrants to purchase shares of common stock		22,902,240	19,323,195	22,902,240	19,323,195
Proceeds from warrants exercised				$ 775
Proceeds from stock options				$ 24
Stock Option [Member]
Number of stock options shares exercised		2,500		22,497
Proceeds from stock options		$ 3		$ 24
Warrants [Member]
Warrants to purchase shares of common stock		524,353	8,277,112	524,353	8,277,112
Proceeds from warrants exercised		$ 536	$ 83
Warrants [Member] | Investors [Member]
Warrants to purchase shares of common stock	4,787,553
Warrant exercise price per share	$ 1.55
Warrant expiration date	Apr. 20, 2022
Warrants [Member] | Placement Agents [Member]
Warrants to purchase shares of common stock	311,191
Warrant exercise price per share	$ 2.0888
Warrant expiration date	Apr. 20, 2022
Warrants [Member] | Investors [Member]
Warrant exercise price per share	$ 0.64
Warrants [Member] | Placement Agents [Member]
Warrant exercise price per share	$ 0.54
Common Stock [Member]
Number of common stock shares issued		437,999	8,277,112	944,746	8,974,612
Warrants One [Member]
Warrants to purchase shares of common stock		1,147,184	8,974,612	1,147,184	8,974,612
Proceeds from warrants exercised				$ 775	$ 153
Registered Direct Offering [Member]
Common stock shares sold	4,787,553
Sale of stock price per share	$ 1.671
Proceeds from sale of stock	$ 8,000
Deducting fees and expenses	$ 686

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