CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Revenue	$ 188,001	$ 124,875	$ 92,109
Cost of revenue	41,934	29,930	22,540
Gross profit	146,067	94,945	69,569
Operating expenses
Sales and marketing	81,122	54,518	41,719
Research and development	24,322	17,528	14,224
General and administrative	43,116	29,044	21,848
Total operating expenses	148,560	101,090	77,791
Loss from operations	(2,493)	(6,145)	(8,222)
Other expense, net	522	290	1,480
Loss before income taxes	(3,015)	(6,435)	(9,702)
Provision for income taxes	270	577	464
Net loss	$ (3,285)	$ (7,012)	$ (10,166)
Net loss per share attributable to common stockholders—basic and diluted:
Basic (in dollars per share)	$ (0.03)	$ (0.07)	$ (0.11)
Diluted (in dollars per share)	$ (0.03)	$ (0.07)	$ (0.11)
Weighted-average number of shares of common stock used in computing net loss per share attributable to common stockholders—basic and diluted:
Basic (in shares)	126,586	94,803	94,530
Diluted (in shares)	126,586	94,803	94,530
Other comprehensive loss
Foreign currency translation adjustments	$ (230)	$ 0	$ 0
Comprehensive loss	$ (3,515)	$ (7,012)	$ (10,166)