Disaggregated Revenue - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Loan servicing and systems revenue
Disaggregation of Revenue [Line Items]
Revenue	$ 132,244	$ 120,724	$ 260,086	$ 241,465
Department of Education loan servicing
Disaggregation of Revenue [Line Items]
Revenue	74,639	85,737	150,759	173,100
Canada student loans
Disaggregation of Revenue [Line Items]
Revenue	17,685	0	29,016	0
Private education and consumer loan servicing
Disaggregation of Revenue [Line Items]
Revenue	26,114	22,733	51,775	45,426
FFELP loan servicing
Disaggregation of Revenue [Line Items]
Revenue	1,968	2,241	4,222	4,873
Software services
Disaggregation of Revenue [Line Items]
Revenue	11,384	9,452	23,147	16,444
Outsourced services
Disaggregation of Revenue [Line Items]
Revenue	454	561	1,167	1,622
Education technology services and payments revenue
Disaggregation of Revenue [Line Items]
Revenue	118,884	118,184	273,319	265,515
Tuition payment plan services
Disaggregation of Revenue [Line Items]
Revenue	37,005	36,013	78,859	76,085
Payment processing
Disaggregation of Revenue [Line Items]
Revenue	39,409	37,515	95,297	89,051
Education technology services
Disaggregation of Revenue [Line Items]
Revenue	42,312	44,481	98,426	100,177
Other
Disaggregation of Revenue [Line Items]
Revenue	$ 158	$ 175	$ 737	$ 202