Condensed Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Revenue		$ 78,876	$ 63,711	$ 147,041	$ 116,680
Cost of revenue	[1]	19,751	17,114	37,597	32,282
Amortization of acquired technology		698	776	1,443	1,541
Gross profit		58,427	45,821	108,001	82,857
Operating expenses:
Selling and marketing	[1]	24,798	22,099	49,053	43,705
Product development	[1]	3,081	2,534	6,199	5,457
General and administrative	[1]	7,689	6,208	15,531	12,643
Depreciation, excluding depreciation of $654, $446, $1,276 and $827, respectively, included in cost of revenue		1,767	1,388	3,432	2,609
Amortization		1,977	1,658	3,989	3,288
Total operating expenses		39,312	33,887	78,204	67,702
Operating income		19,115	11,934	29,797	15,155
Interest and other income (expense), net		(984)	(486)	(1,544)	(1,182)
Income before provision for income taxes		18,131	11,448	28,253	13,973
Provision for income taxes		5,716	6,328	8,674	7,043
Net income		12,415	5,120	19,579	6,930
Other comprehensive income (loss), net of tax:
Unrealized loss on investments (net of tax provision effect of $(39), $0, $(59) and $0, respectively)		(138)		(207)
Foreign currency translation adjustments		(7,037)	575	(9,732)	1,609
Other comprehensive income (loss)		(7,175)	575	(9,939)	1,609
Comprehensive income		$ 5,240	$ 5,695	$ 9,640	$ 8,539
Net income per common share:
Basic		$ 0.42	$ 0.18	$ 0.66	$ 0.25
Diluted	[2]	$ 0.38	$ 0.17	$ 0.61	$ 0.24
Weighted average common shares outstanding:
Basic		29,574,000	28,152,000	29,641,000	28,146,000
Diluted weighted average shares		34,265,432	32,144,239	34,343,902	32,121,463

[1] Amounts include stock-based compensation expense as follows:

[2] In calculating diluted net income per share, 84 thousand shares and 81 thousand shares related to outstanding stock options and unvested, undelivered restricted stock units were excluded for the three and six months ended June 30, 2022, respectively; 45 thousand shares and 35 thousand shares related to outstanding stock options and unvested, undelivered restricted stock units were excluded for the three and six months ended June 30, 2021, respectively. Additionally, in calculating diluted net income per share, we excluded the impact of interest expense and amortization of note costs relating to our convertible shares from net income and included the weighted average shares 3.9 million common shares under the if-converted method for the three and six months ended June 30, 2022 and 2.9 million common shares for the three and six months ended June 30, 2021, respectively. For the three months and six months ended June 30, 2022, the interest expense including amortization of note issuance costs, related to convertible notes was $0.6 million and $1.3 million, respectively and $0.4 million and $0.8 million for the three and six months ended June 30, 2021, respectively.