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Income Tax (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax
Income tax benefit at the federal statutory rate	$ (9,928)	$ (7,903)	$ (8,052)
State tax benefit	(2,875)	(4,066)	(48)
Foreign tax differential	(96)	(185)	(900)
Stock-based compensation	252	166	133
Interest Expense	1,842	1,315	478
GILTI Inclusion	0	0	849
Prior year true-ups	140	(770)	1,493
Other	497	258	166
Credits	(2,074)	(1,388)	0
Valuation allowance	12,114	11,597	5,212
Income tax expense	$ (128)	$ (976)	$ 1,131
Effective tax rate	0.27%	2.59%	(2.95%)

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