Goodwill and Intangible Assets - Schedule of Changes in Carrying Amount of Goodwill by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Jun. 30, 2023	Sep. 30, 2023	Dec. 31, 2022
Goodwill [Roll Forward]
Beginning balance		$ 112,593	$ 243,486
Goodwill acquired		0	0
Impairment		(53,000)	(131,400)
Adjustments			507
Ending balance		59,593	112,593
APUS Segment
Goodwill [Roll Forward]
Beginning balance		0	0
Goodwill acquired		0	0
Impairment		0	0
Adjustments			0
Ending balance		0	0
RU Segment
Goodwill [Roll Forward]
Beginning balance		86,030	216,923
Goodwill acquired		0	0
Impairment		(53,000)	(131,400)
Adjustments			507
Ending balance	$ 33,000	33,030	86,030
HCN Segment
Goodwill [Roll Forward]
Beginning balance		26,563	26,563
Goodwill acquired		0	0
Impairment		0	0
Adjustments			0
Ending balance		$ 26,563	$ 26,563