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LOANS HELD FOR INVESTMENT - Corporation's TDR Activity (Detail) - TDR - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Financing Receivable Modifications [Line Items]
Beginning Balance of TDRs	$ 414,738	$ 479,196
New TDRs	4,670	3,019
Increases to existing TDRs	45	34
Charge-offs post modification	(881)	(2,909)
Foreclosures	(689)	(866)
Paid-off, partial payments and other	(13,134)	(12,247)
Ending balance of TDRs	$ 404,749	$ 460,204

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Disbursements during the period on existing commitments of TDRs loans.

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Repayments related to Trouble Debt Restructuring Loans.

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Amount of financing receivable modified as troubled debt restructuring.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

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-Section 50
-Paragraph 4
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