Stockholders' Deficit (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands			12 Months Ended
	Aug. 13, 2018	Nov. 08, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2015	Nov. 10, 2015
Common stock, authorized			100,000,000	100,000,000		100,000,000
Preferred stock, authorized					15,000,000	10,000,000
Preferred stock, par value (in dollars per share)						$ 0.001
Common stock, shares, issued			23,471,999	16,404,195
Common stock, shares, outstanding			23,471,999	16,404,195
Aggregate number of common stock issued			7,021,092
Cashless exercise of vested stock options			49,000	18,000
Warrants exercised			(1,475,659)
Proceeds from the exercise of warrants			$ 2,100
Number of units issued in transaction			1,475,659
Common stock, par value (in dollars per share)			$ 0.001	$ 0.001		$ 0.001
Common Stock Offering Warrants Issued
Former Employee [Member]
Number of restricted stock units vested during the period			32,625
Board Member [Member]
Number of restricted stock units vested during the period			37,162
Settlement of compensation			$ 28
Restricted Stock Units [Member]
Cashless exercise of vested stock options			13,900
Number of restricted stock units vested during the period			151,406
Right Offering [Member]
Value of common stock issued			$ 5,357,052
Proceeds from issuance of common stock			$ 5,100
Number of subscriptions shares accept	5,357,052
Number of units issued in transaction	5,357,052
Unit price (in dollars per unit)	$ 1.15
Exercise price (in dollars per share)	1.15
Common stock, par value (in dollars per share)	$ 0.001
Common Stock Offering Warrants Issued	5,357,052
Right Offering [Member] | Warrant [Member] | Maxim Partners LLC [Member]
Exercise price (in dollars per share)	$ 1.725
Common Stock Offering Warrants Issued	267,853
Second Public Offering [Member]
Value of common stock issued		$ 4,657,500
Aggregate number of common stock issued		5,860,000
Proceeds from issuance of common stock		$ 5,200
Second Public Offering [Member] | Warrant [Member] | Roth Capital Partners, LLC [Member]
Aggregate number of common stock issued		945,000
Series A Preferred Stock [Member]
Preferred stock, authorized			2,000,000		7,515,000
Preferred stock, par value (in dollars per share)			$ 0.001		$ 0.001
Common Stock [Member]
Conversion Price, interest (in dollars per share)				$ 386,903
Cashless exercise of vested stock options				14,404
Shares issued for settlement of bonus				137,354
Value issued for settlement of bonus				$ 115
Number of restricted stock awards vested				187,295
Common Stock [Member] | Consultant [Member]
Extinguishment of debt				$ 48,240
Number of detachable common stock warrants				137