Stockholders' Equity (Deficit) (Details 4) - Warrant [Member] - $ / shares shares in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Shares, Outstanding at beginning of period	1,828	1,878
Shares, Issued	985
Shares, Expired		(39)
Shares, Outstanding at end of period	2,813	1,839
Shares, Exercisable at end of period	2,813	1,839
Weighted Average Exercise Price Per Share, Outstanding at beginning of period	$ 2.08	$ 2.46
Weighted Average Exercise Price Per Share, Issued	0.50
Weighted Average Exercise Price Per Share, Expired		15.63
Weighted Average Exercise Price Per Share, Outstanding at end of period	1.53	1.58
Weighted Average Exercise Price Per Share, Exercisable at end of period	$ 1.53	$ 1.58