Leases - Narrative (Details)	1 Months Ended	3 Months Ended			6 Months Ended
	May 31, 2024 campus	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($) campus	Jun. 30, 2025 USD ($) state campus	Jun. 30, 2024 USD ($)
Property, Plant and Equipment [Line Items]
Extension term (or more)					1 year
Variable lease payments					$ 0
Lease expense		$ 4,500,000	$ 4,300,000		9,400,000	$ 9,500,000
Cash paid for amounts included in operating lease liabilities		4,800,000	3,700,000		9,400,000	8,200,000
Loss on lease termination		0	779,000		0	3,715,000
Present value of operating lease liabilities		$ 334,000			$ 334,000
Interest rate		7.00%			7.00%
Finance lease, amortization expense		$ 100,000	100,000		$ 100,000	100,000
RU Segment
Property, Plant and Equipment [Line Items]
Number of campuses | campus					20
Number of states | state					6
Loss on lease termination			400,000			$ 1,200,000
RU Segment | Texas
Property, Plant and Equipment [Line Items]
Lease termination fee				$ 2,200,000
Loss on lease termination				$ 2,100,000
RU Segment | Minnesota
Property, Plant and Equipment [Line Items]
Lease termination fee			1,200,000
Number of consolidated campuses | campus				2
RU Segment | Wisconsin
Property, Plant and Equipment [Line Items]
Number of campuses to be closed | campus	2
Operating Lease, Impairment Loss			$ 400,000
HCN Segment
Property, Plant and Equipment [Line Items]
Number of campuses | campus					8
Number of states | state					3