CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Non-controlling Interest
Beginning balance (in shares) at Dec. 31, 2020		34,289
Beginning balance at Dec. 31, 2020	$ 63,859	$ 34	$ 61,066	$ 2,621	$ 138
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contributions from non-controlling interest	195				195
Shares issued on stock options exercises for cash (in shares)		11
Shares issued on stock options exercises for cash	49		49
Stock based compensation	3,747		3,747
Shares issued on net settlement of stock options (in shares)		40
Net loss	(13,190)			(13,169)	(21)
Ending balance (in shares) at Sep. 30, 2021		34,340
Ending balance at Sep. 30, 2021	54,660	$ 34	64,862	(10,548)	312
Beginning balance (in shares) at Jun. 30, 2021		34,323
Beginning balance at Jun. 30, 2021	57,682	$ 34	63,650	(6,326)	324
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued on stock options exercises for cash (in shares)		3
Shares issued on stock options exercises for cash	28		28
Stock based compensation	1,184		1,184
Shares issued on net settlement of stock options (in shares)		14
Net loss	(4,234)			(4,222)	(12)
Ending balance (in shares) at Sep. 30, 2021		34,340
Ending balance at Sep. 30, 2021	54,660	$ 34	64,862	(10,548)	312
Beginning balance (in shares) at Dec. 31, 2021		34,410
Beginning balance at Dec. 31, 2021	54,009	$ 34	66,221	(12,551)	305
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued on stock options exercises for cash (in shares)		106
Shares issued on stock options exercises for cash	365	$ 1	364
Stock based compensation	5,056		5,056
Shares issued on net settlement of stock options (in shares)		72
Net loss	(17,213)			(17,135)	(78)
Ending balance (in shares) at Sep. 30, 2022		34,588
Ending balance at Sep. 30, 2022	42,217	$ 35	71,641	(29,686)	227
Beginning balance (in shares) at Jun. 30, 2022		34,493
Beginning balance at Jun. 30, 2022	46,163	$ 34	69,793	(23,922)	258
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued on stock options exercises for cash (in shares)		62
Shares issued on stock options exercises for cash	157	$ 1	156
Stock based compensation	1,692		1,692
Shares issued on net settlement of stock options (in shares)		33
Net loss	(5,795)			(5,764)	(31)
Ending balance (in shares) at Sep. 30, 2022		34,588
Ending balance at Sep. 30, 2022	$ 42,217	$ 35	$ 71,641	$ (29,686)	$ 227