Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Net sales	$ 113,996	$ 112,428	$ 338,484	$ 339,415
Cost of sales	30,573	28,307	90,491	81,660
Gross profit	83,423	84,121	247,993	257,755
Sales and marketing	55,461	56,097	169,486	164,220
General and administrative	19,322	16,312	54,496	51,091
Research and development	11,943	12,360	35,913	36,378
Acquisition-related amortization and remeasurement (Note 11)	2,484	(335)	(9,678)	5,028
Operating income (loss)	(5,787)	(313)	(2,224)	1,038
Interest expense, net	(277)	(433)	(1,059)	(1,400)
Other expense, net	(3,308)	(1,789)	(7,436)	(3,528)
Loss before income taxes	(9,372)	(2,535)	(10,719)	(3,890)
Income tax benefit (expense)	(1,344)	364	(1,968)	(1,677)
Net loss	$ (10,716)	$ (2,171)	$ (12,687)	$ (5,567)
Net loss per common share:
Basic	$ (0.53)	$ 0.11	$ (0.63)	$ (0.28)
Diluted	$ (0.53)	$ 0.11	$ (0.63)	$ (0.28)
Weighted average number of common shares:
Basic	20,091	19,770	20,007	19,634
Diluted	20,091	19,770	20,007	19,634
Other comprehensive loss, before tax
Unrealized gain (loss) on debt securities	$ (236)	$ 513	$ (749)	$ (115)
Currency translation adjustment	(2,105)	(719)	(4,413)	(1,901)
Other comprehensive loss, before tax	(2,341)	(206)	(5,162)	(2,016)
Income tax benefit (expense) related to other comprehensive loss		(128)		28
Other comprehensive loss, net of tax	(2,341)	(334)	(5,162)	(1,988)
Comprehensive loss	$ (13,057)	$ (2,505)	$ (17,849)	$ (7,555)