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Significant Accounting Policies - Allowance for FFELP Loans and Loan Interest Income (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Accounting Policies [Abstract] |  |
Percentage reimbursement on all qualifying default claims period two (as a percentage) | 97.00% |
Percentage reimbursement on all qualifying default claims period one (as a percentage) | 98.00% |
Variable rate | 100.00% |
Maximum loss exposure due to federal guarantee | 3.00% |
Basis points | 0.0105 |
Loans in nonaccrual status | $ 0 | $ 0

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- Definition Percentage Reimbursement On All Qualifying Default Claims, Maximum Loss Exposure + References No definition available. + Details
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- Definition Percentage reimbursement on all qualifying default claims period one. + References No definition available. + Details
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- Definition Percentage reimbursement on all qualifying default claims period three. + References No definition available. + Details
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- Definition Percentage Reimbursement On All Qualifying FFELP Default Claims Period Two + References No definition available. + Details
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- References No definition available. + Details
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