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Stockholders' Deficit (Details) - Schedule of option activity under the Company's plans - Option [Member] - USD ($)
shares in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Stockholders' Deficit (Details) - Schedule of option activity under the Company's plans [Line Items]    
Shares, outstanding at beginning 1,338 1,077
Weighted Average Exercise Price per share, outstanding at beginning $ 0.87 $ 1.59
Aggregate Intrinsic Value, outstanding at beginning
Shares, Granted
Weighted Average Exercise Price per share, Granted
Aggregate Intrinsic Value, Granted
Shares, Canceled (10)
Weighted Average Exercise Price per share, Canceled $ 56.10
Aggregate Intrinsic Value, Canceled
Shares, outstanding at ending 1,338 1,067
Weighted Average Exercise Price per share, outstanding at ending $ 0.87 $ 1.07
Weighted Average Remaining Contractual Term (Years), outstanding at ending 4 years 127 days 4 years 277 days
Aggregate Intrinsic Value, outstanding at ending
Shares, Vested and expected to vest 1,320 1,062
Weighted Average Exercise Price per share, Vested and expected to vest $ 0.88 $ 1.59
Weighted Average Remaining Contractual Term (Years), Vested and expected to vest 3 years 361 days 4 years 335 days
Aggregate Intrinsic Value, Vested and expected to vest
Shares, Exercisable 1,018 736
Weighted Average Exercise Price per share, Exercisable $ 0.97 $ 1.25
Weighted Average Remaining Contractual Term (Years), Exercisable 3 years 313 days 4 years 219 days
Aggregate Intrinsic Value, Exercisable