SUPPLEMENTAL CASH FLOW INFORMATION - Supplemental Cash Flow Information (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Cash paid for:
Interest on borrowings			$ 53,659	$ 71,859
Income tax			13,448	13,200
Operating cash flow from operating leases			14,655	8,492
Non-cash investing and financing activities:
Additions to OREO			14,748	6,608
Additions to auto and other repossessed assets			25,647	24,160
Capitalization of servicing assets	$ 1,146	$ 1,598	4,046	3,168
Loan securitizations			148,223	156,786
Loans held for investment transferred to held for sale			32,858	4,876
ROU assets obtained in exchange for operating lease liabilities			5,518	1,328
Unsettled purchases of available-for-sale investment securities			46,720	0
Unsettled common stock shares repurchases			517	0
Receivable on unsettled securities sale	0	121,860	0	121,860
Acquisitions [Abstract]
Cash consideration			0	1,277,626
Fair value of assets acquired	0	5,562,152	0	5,562,152
Liabilities assumed	$ 0	$ 4,290,829	$ 0	$ 4,290,829

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Cash paid.

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The securitization of loans held for investment in noncash investing or financing activities. Securitization in noncash investing or financing activities is the structured process whereby interests in loans and other receivables are packaged, underwritten, and changed to investments.

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The cash pending to pay to reacquire common stock during the period.

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The cash pending to pay associated with the purchase of debt and equity securities classified as available-for-sale securities.

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Amount of assets acquired at the acquisition date.

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Amount of liabilities assumed at the acquisition date.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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Amount of real estate investments acquired through foreclosure for entities with a substantial portion of business acquiring and holding investment real estate.

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Amount of additions from purchases, assumption or transfer to contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

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Value of loans and leases held in the entity's portfolio transferred to loans and leases held-for-sale in noncash transactions.

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