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Commitments and Contingent Liabilities (Details) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2030 | Jun. 30, 2025 | Dec. 31, 2021
Guarantor Obligations [Line Items] |  |  |
Within one year |  |  | $ 10,075,480
One to three years |  |  | 325,786
Three to five years |  |  | 32,082
Over five years |  |  | 18,651
Total |  |  | 10,451,999
Deposits Without a Stated Maturity |  |  |
Guarantor Obligations [Line Items] |  |  |
Within one year |  |  | 9,252,458
One to three years |  |  | 0
Three to five years |  |  | 0
Over five years |  |  | 0
Total |  |  | 9,252,458
Time Deposits |  |  |
Guarantor Obligations [Line Items] |  |  |
Within one year |  |  | 478,056
One to three years |  |  | 227,188
Three to five years |  |  | 20,708
Over five years |  |  | 3,130
Total |  |  | 729,082
Borrowed Funds |  |  |
Guarantor Obligations [Line Items] |  |  |
Within one year |  |  | 323,918
One to three years |  |  | 69,670
Three to five years |  |  | 0
Over five years |  |  | 0
Total |  |  | 393,588
Operating Lease Obligations |  |  |
Guarantor Obligations [Line Items] |  |  |
Within one year |  |  | 7,231
One to three years |  |  | 13,330
Three to five years |  |  | 9,517
Over five years |  |  | 8,407
Total |  |  | 38,485
Outside Data Processing |  |  |
Guarantor Obligations [Line Items] |  |  |
Within one year |  |  | 4,325
One to three years |  |  | 5,225
Three to five years |  |  | 0
Over five years |  |  | 0
Total |  |  | 9,550
George Mason Sponsorship |  |  |
Guarantor Obligations [Line Items] |  |  |
Within one year |  |  | 675
One to three years |  |  | 1,350
Three to five years |  |  | 1,388
Over five years |  |  | 6,075
Total |  |  | 9,488
George Mason Sponsorship | Termination Option One |  |  |
Guarantor Obligations [Line Items] |  |  |
Increase (decrease) in contractual obligation, termination option |  |  | $ 3,500
George Mason Sponsorship | Termination Option One | Minimum |  |  |
Guarantor Obligations [Line Items] |  |  |
Contractual obligation, option period |  |  | 11 years
George Mason Sponsorship | Termination Option One | Maximum |  |  |
Guarantor Obligations [Line Items] |  |  |
Contractual obligation, option period |  |  | 15 years
George Mason Sponsorship | Termination Option Two |  |  |
Guarantor Obligations [Line Items] |  |  |
Increase (decrease) in contractual obligation, termination option |  |  | $ 3,600
George Mason Sponsorship | Termination Option Two | Minimum |  |  |
Guarantor Obligations [Line Items] |  |  |
Contractual obligation, option period |  |  | 16 years
George Mason Sponsorship | Termination Option Two | Maximum |  |  |
Guarantor Obligations [Line Items] |  |  |
Contractual obligation, option period |  |  | 20 years
George Mason Sponsorship | Forecast |  |  |
Guarantor Obligations [Line Items] |  |  |
Option to terminate | 15 years | 10 years |
D.C. United |  |  |
Guarantor Obligations [Line Items] |  |  |
Within one year |  |  | $ 844
One to three years |  |  | 0
Three to five years |  |  | 0
Over five years |  |  | 0
Total |  |  | 844
LIHTC Investments |  |  |
Guarantor Obligations [Line Items] |  |  |
Within one year |  |  | 7,973
One to three years |  |  | 7,023
Three to five years |  |  | 469
Over five years |  |  | 1,039
Total |  |  | 16,504
Other Investments |  |  |
Guarantor Obligations [Line Items] |  |  |
Within one year |  |  | 0
One to three years |  |  | 2,000
Three to five years |  |  | 0
Over five years |  |  | 0
Total |  |  | $ 2,000

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