Segment Information - Summary of Consolidated Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Assets
Total assets	$ 615,056	$ 725,608
Operating Segments | APUS Segment
Assets
Total assets	113,551	126,926
Operating Segments | RU Segment
Assets
Total assets	300,625	429,299
Operating Segments | HCN Segment
Assets
Total assets	59,820	51,936
Corporate and Other
Assets
Total assets	$ 141,060	$ 117,447