Share-Based Compensation (Details 1) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Restricted Stock Units (RSUs) [Member]
Restricted stock activity
Restricted units outstanding	574,916	342,683
Restricted units outstanding, weighted average price	$ 9.02	$ 22.10
Restricted stock units granted	397,285
Restricted stock units granted, weighted average price	$ 2.83
Restricted stock units forfeited	(6,326)
Restricted stock units forfeited, weighted average price	$ 19.46
Restricted stock units vested	(158,726)
Restricted stock units vested, weighted average price	$ 21.38
Share-based Payment Arrangement, Option [Member]
Stock option activity in shares and weighted average price
Options outstanding, beginning of period, shares	324,324
Options outstanding, beginning of period, weighted average price	$ 27.68
Options expired	(20,619)
Options expired, weighted average price	$ 26.96
Options outstanding, end of period, shares	303,705
Options outstanding, end of period, weighted average price	$ 27.73
Options exercisable, end of period, shares	206,179
Options exercisable, end of period, weighted average price	$ 28.41