ShareBased Compensation (Details 4) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Number of Options
Outstanding, Beginning			3,758,670
Granted	55,000	55,000	820,000	515,000
Exercised			76,667
Forfeited or expired			(87,571)
Outstanding, Ending	4,414,432		4,414,432
Vested and expected to vest	4,232,627		4,232,627
Exercisable, Ending	2,666,343		2,666,343
Weighted Average Exercise Price
Outstanding, Beginning			$ 4.26
Granted	$ 2.75	$ 1.08	2.61	$ 1.90
Exercised			2.30
Forfeited or expired			8.87
Outstanding, Ending	3.90		3.90
Vested and expected to vest	3.95		3.95
Exercisable at Ending	$ 4.62		$ 4.62
Weighted Average Remaining Contractual Term
Outstanding, Beginning			4 years 8 months 12 days
Outstanding at Ending			4 years 8 months 12 days
Vested and expected to vest at Ending			4 years 8 months 12 days
Exercisable at Ending			3 years 10 months 24 days
Aggregate Intrinsic Value
Outstanding, Beginning			$ 270
Exercised			55
Outstanding at Ending	$ 1,020		1,020
Vested and expected to vest at Ending			945
Exercisable at Ending			$ 340