Condensed Consolidated Statements of Mezzanine Equity and Stockholders' Equity (Unaudited) - USD ($) $ in Thousands		Total	Temporary Equity [Member] Redeemable Convertible Preferred Stock [Member]	Temporary Equity [Member] Redeemable Common Shares [Member]	Temporary Equity [Member] Share-based Awards [Member]	Noncontrolling Interest [Member]	Temporary Equity, Including Portion Attributable to Noncontrolling Interests [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Common Stock Outstanding [Member]		Treasury Stock [Member]
Balance, temporary equity, shares (in shares) at Dec. 31, 2020	[1]		42,000,592
Balance, temporary equity, including noncontrolling interest at Dec. 31, 2020			$ 183,390	$ 25,074	$ 1,489	$ 3,061	$ 213,014
Balance (in shares) at Dec. 31, 2020	[1]							100,068,469
Balance at Dec. 31, 2020		$ (192,827)						$ 12	$ 105,159	$ (299,789)	$ 1,791
Proceeds from exercise of options (in shares)	[1]							3,763,054
Proceeds from exercise of options		3,277						$ 0	3,277	0	0
Stock-based compensation expense		4,208						0	4,208	0	0
Issuance of redeemable noncontrolling interest in EduTech		515						0	515	0	0
Net loss		(15,999)						0	0	(15,999)	0
Net income attributable to and accretion of redeemable noncontrolling interest		896	0	0	0	896	896	(0)	(0)	896	(0)
Net income attributable to and accretion of redeemable noncontrolling interest		(896)	0	0	0	(896)	(896)	0	0	(896)	0
Total other comprehensive income (loss)			0	0	0	(52)	(52)
Total other comprehensive income (loss)		57						0	0	0	57
Reclassification of share-based awards to mezzanine equity		(206)	0	0	206	0	206	0	(206)	0	0
Reclassification of common shares from liabilities			0	6,873	0	0	6,873
Remeasurement of redemption value of common shares		(7,810)	0	7,810	0	0	7,810	0	0	(7,810)	0
Remeasurement of redemption value of convertible preferred stock		(33,536)	33,536	0	0	0	33,536	$ 0		(33,536)	0
Issuance of redeemable noncontrolling interest in EduTech			$ 0	0	0	238	238
Balance, temporary equity, shares (in shares) at Jun. 30, 2021	[1]		42,000,592
Balance, temporary equity, including noncontrolling interest at Jun. 30, 2021			$ 216,926	39,757	1,695	4,143	262,521
Balance (in shares) at Jun. 30, 2021	[1]							103,831,523
Balance at Jun. 30, 2021		(243,217)						$ 12	112,953	(358,030)	1,848
Balance, temporary equity, shares (in shares) at Mar. 31, 2021	[1]		42,000,592
Balance, temporary equity, including noncontrolling interest at Mar. 31, 2021			$ 192,184	24,891	1,591	3,696	222,362
Balance (in shares) at Mar. 31, 2021	[1]							100,195,199
Balance at Mar. 31, 2021		(203,207)						$ 12	108,972	(313,739)	1,548
Proceeds from exercise of options (in shares)	[1]							3,636,324
Proceeds from exercise of options		2,152						$ 0	2,152	0	0
Stock-based compensation expense		1,933						0	1,933	0	0
Net loss		(11,057)						0	0	(11,057)	0
Net income attributable to and accretion of redeemable noncontrolling interest		499	0	0	0	499	499	(0)	(0)	499	(0)
Net income attributable to and accretion of redeemable noncontrolling interest		(499)	0	0	0	(499)	(499)	0	0	(499)	0
Total other comprehensive income (loss)			0	0	0	(52)	(52)
Total other comprehensive income (loss)		300						0	0	0	300
Reclassification of share-based awards to mezzanine equity		(104)	0	0	104	0	104	0	(104)	0	0
Reclassification of common shares from liabilities			0	6,873	0	0	6,873
Remeasurement of redemption value of common shares		(7,993)	0	7,993	0	0	7,993	0	0	(7,993)	0
Remeasurement of redemption value of convertible preferred stock		(24,742)	$ 24,742	0	0	0	24,742	$ 0	0	(24,742)	0
Balance, temporary equity, shares (in shares) at Jun. 30, 2021	[1]		42,000,592
Balance, temporary equity, including noncontrolling interest at Jun. 30, 2021			$ 216,926	39,757	1,695	4,143	262,521
Balance (in shares) at Jun. 30, 2021	[1]							103,831,523
Balance at Jun. 30, 2021		(243,217)						$ 12	112,953	(358,030)	1,848
Balance, temporary equity, shares (in shares) at Dec. 31, 2021	[1]		0
Balance, temporary equity, including noncontrolling interest at Dec. 31, 2021		5,210	$ 0	0	0	5,210	5,210
Balance (in shares) at Dec. 31, 2021												181,821,767	[1]	143,564
Balance at Dec. 31, 2021		$ 250,355						18	625,056	(375,297)	2,317			$ (1,739)
Proceeds from exercise of options (in shares)		1,156,279										1,156,279	[1]	0
Proceeds from exercise of options		$ 1,719						0	1,719	0	0			$ 0
Common stock issued upon vesting of restricted stock units (in shares)												254,432	[1]	0
Common stock issued upon vesting of restricted stock units		0						0	0	0	0			$ 0
Stock-based compensation expense		18,670						0	18,670	0	0			0
Issuance of redeemable noncontrolling interest in EduTech		0	0	0	0	5,794	5,794	0	0	0	0			0
Reclassification of earn-out RSUs to earn-out shares		(514)						0	(514)	0	0			$ 0
Repurchase of common stock (in shares)												(1,901,662)		1,901,662
Repurchase of common stock		(10,052)						0	0	0	0			$ (10,052)
Net loss		(20,255)						0	0	(20,255)	0			0
Net income attributable to and accretion of redeemable noncontrolling interest		1,244	0	0	0	1,244	1,244	(0)	(0)	1,244	(0)			(0)
Net income attributable to and accretion of redeemable noncontrolling interest		(1,244)	0	0	0	(1,244)	(1,244)	0	0	(1,244)	0			0
Total other comprehensive income (loss)			$ 0	0	0	(75)	(75)
Total other comprehensive income (loss)		(1,428)						0	0	0	(1,428)			$ 0
Balance, temporary equity, shares (in shares) at Jun. 30, 2022	[1]		0
Balance, temporary equity, including noncontrolling interest at Jun. 30, 2022		12,173	$ 0	0	0	12,173	12,173
Balance (in shares) at Jun. 30, 2022												181,330,816		2,045,226
Balance at Jun. 30, 2022		237,251						18	644,931	(396,796)	889			$ (11,791)
Balance, temporary equity, shares (in shares) at Mar. 31, 2022	[1]		0
Balance, temporary equity, including noncontrolling interest at Mar. 31, 2022			$ 0	0	0	5,818	5,818
Balance (in shares) at Mar. 31, 2022												182,493,007	[1]	278,564
Balance at Mar. 31, 2022		$ 245,237						18	634,070	(386,967)	598			$ (2,482)
Proceeds from exercise of options (in shares)		442,469										442,469	[1]	0
Proceeds from exercise of options		$ 683						0	683	0	0			$ 0
Common stock issued upon vesting of restricted stock units (in shares)												162,002	[1]	0
Common stock issued upon vesting of restricted stock units		0						0	0	0	0			$ 0
Stock-based compensation expense		10,396						0	10,396	0	0			0
Issuance of redeemable noncontrolling interest in EduTech		0	0	0	0	5,794	5,794	0	0	0	0			0
Reclassification of earn-out RSUs to earn-out shares		(218)						0	(218)	0	0			$ 0
Repurchase of common stock (in shares)												(1,766,662)		1,766,662
Repurchase of common stock		(9,309)						0	0	0	0			$ (9,309)
Net loss		(9,202)						0	0	(9,202)	0			0
Net income attributable to and accretion of redeemable noncontrolling interest		627	0	0	0	627	627	(0)	(0)	627	(0)			(0)
Net income attributable to and accretion of redeemable noncontrolling interest		(627)	0	0	0	(627)	(627)	0	0	(627)	0			0
Total other comprehensive income (loss)			$ 0	0	0	(66)	(66)
Total other comprehensive income (loss)		291						0	0	0	291			$ 0
Balance, temporary equity, shares (in shares) at Jun. 30, 2022	[1]		0
Balance, temporary equity, including noncontrolling interest at Jun. 30, 2022		12,173	$ 0	$ 0	$ 0	$ 12,173	$ 12,173
Balance (in shares) at Jun. 30, 2022												181,330,816		2,045,226
Balance at Jun. 30, 2022		$ 237,251						$ 18	$ 644,931	$ (396,796)	$ 889			$ (11,791)

[1] As part of the Business Combination (as disclosed in "Note 3 — Business Combination"), all per share information has been retroactively adjusted using an exchange ratio of 8.69144 per share.