Segment Information - Summary of Consolidated Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Assets:
Total Assets	$ 662,068	$ 725,608
Corporate and Other
Assets:
Total Assets	165,698	117,447
APUS Segment | Operating Segments
Assets:
Total Assets	126,349	126,926
RU Segment | Operating Segments
Assets:
Total Assets	319,494	429,299
HCN Segment | Operating Segments
Assets:
Total Assets	$ 50,527	$ 51,936