CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Revenue	$ 167,729	$ 145,072	$ 129,959
Cost of revenue	38,232	30,354	29,008
Gross profit	129,497	114,718	100,951
Operating expenses:
Sales and marketing	60,755	52,905	52,813
Research and development	22,382	18,990	19,200
General and administrative	27,432	23,739	25,136
Total operating expenses	110,569	95,634	97,149
Income from operations	18,928	19,084	3,802
Other (expense) income:
Interest (expense) income, net	(127)	175	754
Other (expense) income, net	(736)	9	(385)
Total other (expense) income	(863)	184	369
Income before income taxes	18,065	19,268	4,171
Income tax (benefit) expense	(29,150)	443	689
Net income	$ 47,215	$ 18,825	$ 3,482
Net income per share:
Basic (in dollars per share)	$ 1.59	$ 0.66	$ 0.12
Diluted (in dollars per share)	$ 1.50	$ 0.63	$ 0.12
Weighted average common shares outstanding:
Weighted average common shares outstanding, basic	29,774,172	28,616,401	27,886,278
Weighted average common shares outstanding, diluted	31,506,080	30,035,261	28,816,977