ShareBased Compensation (Details 1) - Service Period Based Stock Options [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Number of shares, Outstanding, Beginning balance	9,509	8,023
Number of shares
Number of shares, Outstanding, granted	3,609	2,603
Number of shares, Outstanding, Expired	(1,052)	(402)
Number of shares, Options Exercised	(259)	(3)
Number of shares, Outstanding, Forfeited	(974)	(712)
Number of shares, ending balance Exercised	6,670
Number of shares, ending balance	10,833	9,509
Weighted average exercise price
Weighted average exercise price, outstanding begining balance	$ 3.86	$ 3.75
Weighted average exercise price, granted	4.18	4.03
Weighted average exercise price, exercised	3.84	2.54
Weighted average exercise price, expired	4.66	4.50
Weighted average exercise price, options forfeited	3.75	3.89
Weighted average exercise price, outstanding ending balance	3.96	$ 3.86
Weighted average exercise price, exercisable ending balance	$ 3.83
Weighted average remaining contractual term
Weighted average remaining contractual term, beginning balance	6 years 10 months 2 days	7 years 1 month 9 days
Weighted average remaining contractual term, granted	10 years	10 years
Weighted average remaining contractual term, ending balance		6 years 10 months 24 days
Weighted average remaining contractual term, Exercisable balance	5 years 4 months 20 days
Weighted average fair value
fair value granted	$ 2.45	$ 2.46
Weighted average intrinsic value
Weighted average intrinsic value, begining balance	$ 6,315	$ 2,207
Weighted average intrinsic value, exercised	1,271	389
Weighted average intrinsic value, ending balance	10,472	$ 6,315
Weighted average intrinsic value, exercised, ending balance	$ 7,562