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Disaggregated Revenue and Deferred Revenue - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Solar construction revenue
Disaggregation of Revenue [Line Items]
Revenue	$ 24,543	$ 56,569	$ 31,669
Commercial revenue
Disaggregation of Revenue [Line Items]
Revenue	17,677	53,269	20,969
Residential revenue (a)
Disaggregation of Revenue [Line Items]
Revenue	$ 6,866	3,300	10,700
Loan servicing and systems revenue
Disaggregation of Revenue [Line Items]
Revenue		482,408	517,954	$ 535,459
Government loan servicing
Disaggregation of Revenue [Line Items]
Revenue		380,921	412,478	423,066
Private education and consumer loan servicing
Disaggregation of Revenue [Line Items]
Revenue		63,453	48,984	49,210
FFELP loan servicing
Disaggregation of Revenue [Line Items]
Revenue		12,212	13,704	16,016
Software services
Disaggregation of Revenue [Line Items]
Revenue		21,032	29,208	33,409
Outsourced services
Disaggregation of Revenue [Line Items]
Revenue		4,790	13,580	13,758
Education technology services and payments revenue
Disaggregation of Revenue [Line Items]
Revenue		486,962	463,311	408,543
Tuition payment plan services
Disaggregation of Revenue [Line Items]
Revenue		135,851	125,326	110,802
Payment processing
Disaggregation of Revenue [Line Items]
Revenue		179,043	163,859	148,212
Education technology services
Disaggregation of Revenue [Line Items]
Revenue		169,065	170,754	146,679
Other
Disaggregation of Revenue [Line Items]
Revenue		$ 3,003	$ 3,372	$ 2,850

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