Segment Information - Summary of Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue
Total Revenue	$ 152,438	$ 149,535	$ 149,608	$ 154,747	$ 154,000	$ 98,248	$ 78,014	$ 88,541	$ 606,328	$ 418,803	$ 321,785
Depreciation and amortization
Total depreciation and amortization									32,127	17,832	12,984
Income (loss) from operations before interest and income taxes
Total income (loss) from operations before interest and income taxes									(137,348)	30,371	24,757
Interest income (expense)
Total interest income (expense)									(17,728)	(4,277)	1,092
Income tax expense (benefit)
Total income tax expense (benefit)									(36,276)	7,511	7,020
Capital expenditures
Total capital Expenditures									16,389	11,828	4,926
Corporate and Other
Revenue
Total Revenue									20,865	(183)	(244)
Depreciation and amortization
Total depreciation and amortization									590	41	41
Income (loss) from operations before interest and income taxes
Total income (loss) from operations before interest and income taxes									(25,232)	(24,138)	(19,403)
Interest income (expense)
Total interest income (expense)									(18,049)	(4,628)	772
Income tax expense (benefit)
Total income tax expense (benefit)									(10,064)	(7,543)	(4,300)
Capital expenditures
Total capital Expenditures									175	0	0
APUS Segment | Operating Segments
Revenue
Total Revenue									285,128	283,700	285,938
Depreciation and amortization
Total depreciation and amortization									6,373	9,064	12,323
Income (loss) from operations before interest and income taxes
Total income (loss) from operations before interest and income taxes									58,452	51,050	43,438
Interest income (expense)
Total interest income (expense)									219	210	303
Income tax expense (benefit)
Total income tax expense (benefit)									16,465	14,023	11,127
Capital expenditures
Total capital Expenditures									3,817	3,902	4,724
RU Segment | Operating Segments
Revenue
Total Revenue									253,257	89,483	0
Depreciation and amortization
Total depreciation and amortization									24,206	7,989	0
Income (loss) from operations before interest and income taxes
Total income (loss) from operations before interest and income taxes									(166,557)	1,630	0
Interest income (expense)
Total interest income (expense)									79	132	0
Income tax expense (benefit)
Total income tax expense (benefit)									(41,651)	509	0
Capital expenditures
Total capital Expenditures									9,263	5,987	0
HCN Segment | Operating Segments
Revenue
Total Revenue									47,078	45,803	36,091
Depreciation and amortization
Total depreciation and amortization									958	738	620
Income (loss) from operations before interest and income taxes
Total income (loss) from operations before interest and income taxes									(4,011)	1,829	722
Interest income (expense)
Total interest income (expense)									23	9	17
Income tax expense (benefit)
Total income tax expense (benefit)									(1,026)	522	193
Capital expenditures
Total capital Expenditures									$ 3,134	$ 1,939	$ 202