Segment and Geographic Information - Segment Results of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue
Revenue	$ 124,754	$ 102,089	$ 245,187	$ 190,451
Segment gross profit
Total segment gross profit	93,192	71,614	182,731	129,811
Platform and support costs	10,270	7,066	18,163	13,376
Stock-based compensation expense	812	903	1,389	1,010
Segment amortization	660	576	1,303	1,003
Total reconciling items	14,786	10,687	26,695	19,347
Gross profit	78,406	60,927	156,036	110,464
Internal Use Software [Member]
Segment gross profit
Segment amortization	3,059	2,157	5,870	3,988
Acquired Intangibles [Member]
Segment gross profit
Segment amortization	645	561	1,273	973
Consumer Segment [Member]
Revenue
Revenue	69,688	62,041	137,784	113,950
Segment gross profit
Total segment gross profit	50,716	40,737	99,012	70,392
Enterprise Segment [Member]
Revenue
Revenue	43,704	28,186	82,750	52,678
Segment gross profit
Total segment gross profit	31,114	19,015	59,066	35,596
Degrees Segment [Member]
Revenue
Revenue	11,362	11,862	24,653	23,823
Segment gross profit
Total segment gross profit	$ 11,362	$ 11,862	$ 24,653	$ 23,823