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Commitments and Contingent Liabilities (Details) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2030 | Jun. 30, 2025 | Dec. 31, 2020
Guarantor Obligations [Line Items] |  |  |
Within one year |  |  | $ 9,084,582
One to three years |  |  | 404,020
Three to five years |  |  | 157,289
Over five years |  |  | 216,951
Total |  |  | 9,862,842
Deposits Without a Stated Maturity |  |  |
Guarantor Obligations [Line Items] |  |  |
Within one year |  |  | 8,211,443
Total |  |  | 8,211,443
Time Deposits |  |  |
Guarantor Obligations [Line Items] |  |  |
Within one year |  |  | 526,641
One to three years |  |  | 376,825
Three to five years |  |  | 74,294
Total |  |  | 977,760
Borrowed Funds |  |  |
Guarantor Obligations [Line Items] |  |  |
Within one year |  |  | 326,726
Three to five years |  |  | 70,000
Over five years |  |  | 200,000
Total |  |  | 596,726
Operating Lease Obligations |  |  |
Guarantor Obligations [Line Items] |  |  |
Within one year |  |  | 8,342
One to three years |  |  | 12,741
Three to five years |  |  | 9,283
Over five years |  |  | 9,500
Total |  |  | 39,866
Outside Data Processing |  |  |
Guarantor Obligations [Line Items] |  |  |
Within one year |  |  | 4,592
One to three years |  |  | 8,190
Three to five years |  |  | 1,677
Total |  |  | 14,459
George Mason Sponsorship |  |  |
Guarantor Obligations [Line Items] |  |  |
Within one year |  |  | 675
One to three years |  |  | 1,350
Three to five years |  |  | 1,363
Over five years |  |  | 6,775
Total |  |  | 10,163
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 |  |  | $ 820
One to three years |  |  | 844
Total |  |  | 1,664
LIHTC Investments |  |  |
Guarantor Obligations [Line Items] |  |  |
Within one year |  |  | 5,343
One to three years |  |  | 2,070
Three to five years |  |  | 672
Over five years |  |  | 676
Total |  |  | 8,761
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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