Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Net sales	$ 106,418	$ 105,593
Cost of sales	28,318	25,914
Gross profit	78,100	79,679
Sales and marketing	54,137	50,785
General and administrative	19,328	16,444
Research and development	11,212	10,897
Acquisition-related amortization and remeasurement (Note 11)	(3,499)	4,469
Operating loss	(3,078)	(2,916)
Interest expense, net	(375)	(417)
Other expense, net	(936)	(2,690)
Loss before income taxes	(4,389)	(6,023)
Income tax benefit (expense)	(71)	207
Net loss	$ (4,460)	$ (5,816)
Net loss per common share:
Basic	$ (0.22)	$ (0.30)
Diluted	$ (0.22)	$ (0.30)
Weighted average number of common shares:
Basic	19,897,695	19,526,872
Diluted	19,897,695	19,526,872
Other comprehensive loss, before tax
Unrealized loss on debt securities	$ (674)	$ (726)
Currency translation adjustment	(488)	(1,027)
Other comprehensive loss, before tax	(1,162)	(1,753)
Income tax benefit related to other comprehensive loss		180
Other comprehensive loss, net of tax	(1,162)	(1,573)
Comprehensive loss	$ (5,622)	$ (7,389)