Debt Securities - Additional Information (Details) - USD ($) |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
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| Debt Securities | |||||
| Sales or calls of securities | $ 0 | $ 0 | $ 0 | $ 0 | |
| Available-for-sale securities, allowance for credit losses | 0 | 0 | $ 0 | ||
| Held-to-maturity securities, allowance for credit losses | 0 | 0 | 0 | ||
| Accrued interest receivable | 1,000,000 | 1,000,000 | 1,100,000 | ||
| FHLB of New York | |||||
| Debt Securities | |||||
| Securities pledged as collateral, fair value | 244,800,000 | 244,800,000 | 252,400,000 | ||
| Borrowing capacity | 228,100,000 | 228,100,000 | 235,700,000 | ||
| Federal Home Loan Bank Advances | |||||
| Debt Securities | |||||
| Securities pledged as collateral, fair value | 46,500,000 | 46,500,000 | |||
| Borrowing capacity | 45,000,000 | 45,000,000 | |||
| Short-term debt | 0 | 0 | 0 | ||
| FRB of New York | |||||
| Debt Securities | |||||
| Securities pledged as collateral, fair value | 49,600,000 | ||||
| Borrowing capacity | 48,100,000 | ||||
| Short-term debt | $ 0 | $ 0 | $ 0 | ||
| X | ||||||||||
- Definition Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount excluding accrued interest, of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of allowance for credit loss for debt security measured at amortized cost (held-to-maturity), classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The fair value of federal funds sold and securities purchased under agreements to resell that serve as collateral for borrowings. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of cash inflow from sale, maturity, prepayment and call of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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