Goodwill and Intangible Assets - Schedule of Changes in Carrying Amount of Goodwill by Reportable Segment (Details) $ in Thousands	3 Months Ended
Mar. 31, 2023 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 112,593
Goodwill acquired	0
Impairment	0
Adjustments	0
Ending balance	112,593
APUS Segment
Goodwill [Roll Forward]
Beginning balance	0
Goodwill acquired	0
Impairment	0
Adjustments	0
Ending balance	0
RU Segment
Goodwill [Roll Forward]
Beginning balance	86,030
Goodwill acquired	0
Impairment	0
Adjustments	0
Ending balance	86,030
HCN Segment
Goodwill [Roll Forward]
Beginning balance	26,563
Goodwill acquired	0
Impairment	0
Adjustments	0
Ending balance	$ 26,563

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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