STOCKHOLDERS' EQUITY - Schedule of Changes in Number of Shares Outstanding (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Shares issued:
Balance at beginning of year	3,211	473
Issue of shares upon vesting of restricted stock units	278	268
Issue of shares on exercises of stock options		16
Issue of shares in consideration for services	243
Issue of shares in private placement/ Exchange		41
Balance at end of year	4,508	3,211
Shares held as treasury stock:
Balance at beginning of year	111	2
Purchase of treasury stock	97	109
Balance at end of year	208	111
Shares outstanding at end of year	4,300	3,100
Common Stock | Private Placement
Shares issued:
Issue of shares in private placement/ Exchange	30
Series A Preferred Stock
Shares issued:
Issue of shares on the conversion of preferred stock		704
Series B Preferred Stock
Shares issued:
Issue of shares on the conversion of preferred stock		225
Series C Warrants
Shares issued:
Issue of shares on exercises of warrants	51	16
Series D Warrants
Shares issued:
Issue of shares on exercises of warrants	33	117
Series E Warrants
Shares issued:
Issue of shares on exercises of warrants	662	1,351