Employee Benefit Plan - Additional information for stock options (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Options expected to vest
Unrecognized stock-based compensation expense		$ 9,321
2017 Long-Term Incentive Compensation Plan [Member]
Grants
During the year		57,155
Weighted Average Annual Volatility			130.00%
Weighted Average Expected Life of grants (Years)			2 years 9 months 15 days
Weighted Average Risk Free Interest Rate			2.69%
Weighted Average Fair Value at Grant-date			$ 1.68
Options Outstanding
Total Options Outstanding		2,950,519	3,460,546
Weighted Average Remaining Contractual Life (Years)		1 year 10 months 24 days	2 years 11 months 23 days
Weighted Average Remaining Expected Life (Years)		1 year 15 days	1 year 10 months 2 days
Weighted Average Exercise Price		$ 1.74	$ 1.81
Aggregate Intrinsic Value (all options)	[1]		$ 1,723
Options Exercisable
Total Options Exercisable		2,066,506	841,053
Weighted Average Exercise Price		$ 1.61	$ 1.00
Weighted Average Remaining Contractual Life (Years)		1 year 8 months 12 days	2 years 2 months 27 days
Aggregate Intrinsic Value	[1]		$ 580
Unvested Options
Total Unvested Options		884,013	2,619,493
Weighted Average Exercise Price		$ 2.06	$ 2.01
Forfeiture rate used for this period ending (staff only)		18.65%	11.25%
Options expected to vest
Number of options expected to vest corrected by forfeiture		719,109	2,324,885
Unrecognized stock-based compensation expense		$ 1,412	$ 2,449
Weighting Average remaining contract life (Years)		1 year 11 months 1 day	2 years 10 months 10 days
Exercises
Total shares delivered/issued		177,678	59,220
Weighted Average Exercise Price		$ 1.19	$ 1.00
Intrinsic Value of Options Exercised		$ 363	$ 101
2018 Long-Term Incentive Compensation Plan [Member]
Grants
Weighted Average Annual Volatility		121.00%
Weighted Average Expected Life of grants (Years)		3 years 2 months 9 days
Weighted Average Risk Free Interest Rate		2.40%
Weighted Average Fair Value at Grant-date		$ 1.88
Options Outstanding
Total Options Outstanding		3,842,649
Weighted Average Remaining Contractual Life (Years)		4 years 18 days
Weighted Average Remaining Expected Life (Years)		2 years 4 months 21 days
Weighted Average Exercise Price		$ 2.13
Options Exercisable
Total Options Exercisable	[2]	100,000
Weighted Average Exercise Price		$ 0.36
Weighted Average Remaining Contractual Life (Years)	[2]	3 years 9 months 29 days
Aggregate Intrinsic Value	[2]	$ 8
Unvested Options
Total Unvested Options		3,742,649
Weighted Average Exercise Price		$ 2.18
Forfeiture rate used for this period ending (staff only)		28.00%
Options expected to vest
Number of options expected to vest corrected by forfeiture		2,678,081
Unrecognized stock-based compensation expense		$ 7,625
Weighting Average remaining contract life (Years)		2 years 10 months 24 days

[1] Excludes options with exercise prices that were greater than the average market price of our common shares for the period.

[2] Excludes options with exercise prices that were greater than the average market price of our common shares for the period.