CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional paid-in capital	Shareholder note receivable	Treasury stock	Accumulated other comprehensive income (loss)	Accumulated deficit
Balance at Dec. 31, 2020	$ 129,880	$ 8	$ 770,764	$ (4,000)	$ (97)	$ 1,204	$ (637,999)
Balance, shares at Dec. 31, 2020		82,104
Stock-based compensation	3,889		3,889
Distributor equity incentives	129		129
Common stock issued for warrant exercises	756		756
Common stock issued for warrant exercises, shares		2,019
Common stock issued for stock option exercises	210		210
Common stock issued for stock option exercises, shares		69
Common stock issued for vesting of restricted stock units, net of shares withheld for tax liability	(1,717)		(1,717)
Common stock issued for vesting of restricted stock units, net of shares withheld for tax liability, shares		379
Shareholder note receivable	1,100			1,100
Foreign currency translation adjustments	(3,052)					(3,052)
Net loss	(22,903)						(22,903)
Balance at Mar. 31, 2021	108,292	$ 8	774,031	$ (2,900)	(97)	(1,848)	(660,902)
Balance, shares at Mar. 31, 2021		84,571
Balance at Dec. 31, 2021	79,422	$ 10	892,828		(25,097)	(5,994)	(782,325)
Balance, shares at Dec. 31, 2021		99,537
Stock-based compensation	7,730		7,730
Distributor equity incentives	2,178		2,178
Distributor equity incentives, shares		199
Common stock issued for warrant exercises	1,289		1,289
Common stock issued for warrant exercises, shares		551
Common stock issued for stock option exercises	140		140
Common stock issued for stock option exercises, shares		39
Common stock issued for vesting of restricted stock units, net of shares withheld for tax liability	(4,751)		(4,751)
Common stock issued for vesting of restricted stock units, net of shares withheld for tax liability, shares		852
Foreign currency translation adjustments	(1,180)					(1,180)
Net loss	(42,844)						(42,844)
Balance at Mar. 31, 2022	$ 41,984	$ 10	$ 899,414		$ (25,097)	$ (7,174)	$ (825,169)
Balance, shares at Mar. 31, 2022		101,178