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Subsequent Events - Additional Information (Detail) - USD ($)					3 Months Ended		12 Months Ended
	Jan. 01, 2024	May 15, 2023	Apr. 06, 2023	Jan. 10, 2023	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Subsequent Event [Line Items]
Proceeds from Sale, Loan, Mortgage, Held-for-Sale							$ 522,252,000	$ 1,228,021,000	$ 1,099,378,000
Gain (Loss) on Sale of Mortgage Loans							4,451,000	21,432,000	$ 42,140,000
Impairment of goodwill							$ 0	$ 0
Forecast [Member]
Subsequent Event [Line Items]
Loss contingency accrual, payments	$ 5,950,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Quarterly cash dividend, declared date			Apr. 06, 2023	Jan. 10, 2023
Common stock dividends per share cash paid			$ 0.1225	$ 0.1225
Dividend, payment date			Apr. 28, 2023	Jan. 31, 2023
Dividend, record date			Apr. 18, 2023	Jan. 23, 2023
Litigation settlement expense					$ 6,000,000
Litigation settlement amount accrued					6,000,000
Impairment of goodwill					$ 26,800,000
Subsequent Event [Member] | Lender Select Mortgage Group Member
Subsequent Event [Line Items]
Proceeds from Sale, Loan, Mortgage, Held-for-Sale		$ 250,000
Gain (Loss) on Sale of Mortgage Loans						$ 553,000

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The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans made to finance real estate acquisitions. This element refers to the gain (loss) and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

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The cash inflow from sales of loans that are secured with real estate mortgages and are held with the intention to resell in the near future.

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