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Adoption of New Accounting Standard - Additional Information (Detail) - USD ($)
$ in Thousands
 6 Months Ended
Jan. 01, 2023
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
 [1]
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Financing Receivable, Purchased with Credit Deterioration, Amount at Par Value   $ 665          
Financing Receivable, Purchased with Credit Deterioration, Discount (Premium) $ 5,600            
Financing Receivable, Purchased with Credit Deterioration, Amount at Purchase Price 59,300            
Allowance for credit losses   43,067 $ 29,974 $ 22,939 $ 17,242 $ 12,013 $ 12,121
ASC 326 [member]              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Reduced stockholders' equity   2,900          
Allowance for credit losses $ 26,961 (4,000)          
Fair value investments entities that calculate net asset value per share unfunded committments   3,700          
ASC 326 [member] | Allowance for Credit Losses [Member]              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Reduced stockholders' equity   2,600          
Maximum [Member]              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Asset with financial institutions   5,000,000          
Minimum [Member]              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Asset with financial institutions   3,000,000          
Special Mention [Member]              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Line Of credit facility current borrowing capacity   500,000          
pooled loans member              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Line Of credit facility current borrowing capacity   $ 1,000,000          
[1] Derived from audited December 31, 2022 Consolidated Financial Statements.