Goodwill and Intangible Assets - Schedule of Other Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Finite-lived intangible assets
Net Carrying Amount	$ 30,361
Indefinite-lived intangible assets
Intangible assets, net	85,082	$ 3,721
RU Segment
Finite-lived intangible assets
Gross Carrying Amount	35,500
Accumulated Amortization	5,139
Net Carrying Amount	30,361
Indefinite-lived intangible assets
Gross Carrying Amount	86,500
Accumulated Amortization	5,139
Intangible assets, net	81,361
HCN
Finite-lived intangible assets
Gross Carrying Amount	4,361
Accumulated Amortization	4,361
Net Carrying Amount	0
Indefinite-lived intangible assets
Gross/Net Carrying Amount	3,721
Gross Carrying Amount	8,082
Accumulated Amortization	4,361
Intangible assets, net	3,721
Trade name | RU Segment
Indefinite-lived intangible assets
Gross/Net Carrying Amount	26,500
Trade name | HCN
Indefinite-lived intangible assets
Gross/Net Carrying Amount	1,998
Accreditation, licensing and Title IV | RU Segment
Indefinite-lived intangible assets
Gross/Net Carrying Amount	24,500
Accreditation, licensing and Title IV | HCN
Indefinite-lived intangible assets
Gross/Net Carrying Amount	1,686
Affiliation agreements | RU Segment
Indefinite-lived intangible assets
Gross/Net Carrying Amount	51,000
Affiliation agreements | HCN
Indefinite-lived intangible assets
Gross/Net Carrying Amount	37
Student roster | RU Segment
Finite-lived intangible assets
Gross Carrying Amount	20,000
Accumulated Amortization	3,333
Net Carrying Amount	16,667
Indefinite-lived intangible assets
Accumulated Amortization	3,333
Curricula | RU Segment
Finite-lived intangible assets
Gross Carrying Amount	14,000
Accumulated Amortization	1,556
Net Carrying Amount	12,444
Indefinite-lived intangible assets
Accumulated Amortization	1,556
Curricula | HCN
Finite-lived intangible assets
Gross Carrying Amount	405
Accumulated Amortization	405
Net Carrying Amount	0
Indefinite-lived intangible assets
Accumulated Amortization	405
Lead conversions | RU Segment
Finite-lived intangible assets
Gross Carrying Amount	1,500
Accumulated Amortization	250
Net Carrying Amount	1,250
Indefinite-lived intangible assets
Accumulated Amortization	250
Student contracts and relationships | HCN
Finite-lived intangible assets
Gross Carrying Amount	3,870
Accumulated Amortization	3,870
Net Carrying Amount	0
Indefinite-lived intangible assets
Accumulated Amortization	3,870
Non-compete agreements | HCN
Finite-lived intangible assets
Gross Carrying Amount	86
Accumulated Amortization	86
Net Carrying Amount	0
Indefinite-lived intangible assets
Accumulated Amortization	$ 86