Derivative Financial Instruments - Summary of Interest Rate Swap Derivatives Designated as Fair Value Accounting Hedges of Fixed-rate Receivables (Detail) - Designated as Hedging Instrument [Member] - Interest Rate Swap [Member] - USD ($) |
6 Months Ended | 12 Months Ended | |
|---|---|---|---|
Jun. 30, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Derivative Instruments and Hedging Activities Disclosures [Line Items] | |||
| Notional Value | $ 100,000,000 | $ 100,000,000 | $ 100,000,000 |
| Weighted Average Remaining Maturity (years) | 2 years 1 month 6 days | 2 years 7 months 6 days | |
| Fair Value | $ (1,826,000) | $ (976,000) | |
| Pay | 4.47% | 4.47% | |
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember | us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember | |
| Loans [Member] | |||
| Derivative Instruments and Hedging Activities Disclosures [Line Items] | |||
| Notional Value | $ 100,000,000 | $ 100,000,000 | |
| Weighted Average Remaining Maturity (years) | 2 years 1 month 6 days | 2 years 7 months 6 days | |
| Fair Value | $ (1,826,000) | $ (976,000) | |
| Pay | 4.47% | 4.47% | |
| Investment, Variable Interest Rate, Type [Extensible Enumeration] | us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember | us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember |