Stockholders' Equity (Deficit) (Details 3) shares in Thousands	6 Months Ended
	Jun. 30, 2020 $ / shares shares
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding, Number Outstanding | shares	1,067
Options Outstanding, Weighted Average Remaining Contractual Life (in years)	4 years 6 months 7 days
Options Outstanding, Weighted Average Exercise Price per share	$ 1.07
Options Exercisable, Number Outstanding | shares	822
Options Exercisable, Weighted Average Exercise Price per Share	$ 2.77
$0.01 - $0.50 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range Limit	0.01
Range of Exercise Prices, Upper Range Limit	$ 0.50
Options Outstanding, Number Outstanding | shares	655
Options Outstanding, Weighted Average Remaining Contractual Life (in years)	4 years 2 months 27 days
Options Outstanding, Weighted Average Exercise Price per share	$ 0.50
Options Exercisable, Number Outstanding | shares	574
Options Exercisable, Weighted Average Exercise Price per Share	$ 0.50
$0.51 – $625.00 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range Limit	0.51
Range of Exercise Prices, Upper Range Limit	$ 625.00
Options Outstanding, Number Outstanding | shares	412
Options Outstanding, Weighted Average Remaining Contractual Life (in years)	4 years 11 months 1 day
Options Outstanding, Weighted Average Exercise Price per share	$ 1.97
Options Exercisable, Number Outstanding | shares	229
Options Exercisable, Weighted Average Exercise Price per Share	$ 9.20