Adoption of New Accounting Standard - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended
	Jan. 01, 2023	Mar. 31, 2023	Dec. 31, 2022	[1]	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		29,974	$ 22,939		$ 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		$ 3,000,000

[1] Derived from audited December 31, 2022 Consolidated Financial Statements.