Other Assets and Liabilities - Additional Information (Detail) $ in Thousands |
3 Months Ended | 6 Months Ended | 12 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2026
USD ($)
|
Jun. 30, 2025
USD ($)
|
Jun. 30, 2026
USD ($)
loan
|
Jun. 30, 2026
USD ($)
security_loan
|
Jun. 30, 2026
USD ($)
|
Jun. 30, 2025
USD ($)
|
Dec. 31, 2025
USD ($)
loan
|
Dec. 31, 2025
USD ($)
security_loan
|
|
| Financing Receivable, Allowance for Credit Loss [Line Items] | ||||||||
| Current expected credit loss reserves for unfunded loan commitments | $ 12,610 | $ 11,700 | $ 12,610 | $ 12,610 | $ 12,610 | $ 11,700 | $ 11,617 | $ 11,617 |
| Number of loans | 133 | 133 | 131 | 131 | ||||
| Increase (decrease) in reserve | (500) | $ 1,200 | 1,000 | $ 1,300 | ||||
| Unfunded Loan Commitments | ||||||||
| Financing Receivable, Allowance for Credit Loss [Line Items] | ||||||||
| Current expected credit loss reserves for unfunded loan commitments | $ 1,107,729 | $ 1,107,729 | $ 1,107,729 | $ 1,107,729 | $ 1,185,004 | $ 1,185,004 | ||
| Number of loans | loan | 53 | |||||||