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Loans and Lease Finance Receivables and Allowance for Credit Losses - Schedule of Balance and Activity Related to Allowance for Loan Losses for Held-for-Investment Loans by Type (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Beginning Balance | $ 86,842 | $ 85,117
Charge-offs | (4,267) | (110)
Recoveries | 242 | 33
Provision Recorded at Acquisition |  | 1,500
Provision for (Recapture of) Credit Losses | 0 |
Ending Balance | 82,817 | 86,540
Commercial Real Estate [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Beginning Balance | 69,466 | 64,806
Charge-offs | (2,258) | 0
Recoveries | 0 | 0
Provision Recorded at Acquisition |  | 2,311
Provision for (Recapture of) Credit Losses | 2,237 |
Ending Balance | 69,445 | 67,117
Construction [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Beginning Balance | 1,277 | 1,702
Charge-offs | 0 | 0
Recoveries | 3 | 3
Provision Recorded at Acquisition |  | (31)
Provision for (Recapture of) Credit Losses | 16 |
Ending Balance | 1,296 | 1,674
Small Business Administration [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Beginning Balance | 2,679 | 2,809
Charge-offs | (90) | (94)
Recoveries | 63 | 12
Provision Recorded at Acquisition |  | 2
Provision for (Recapture of) Credit Losses | (121) |
Ending Balance | 2,531 | 2,729
Commercial and Industrial [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Beginning Balance | 9,116 | 10,206
Charge-offs | (1,917) | (16)
Recoveries | 176 | 14
Provision Recorded at Acquisition |  | (1,241)
Provision for (Recapture of) Credit Losses | (2,316) |
Ending Balance | 5,059 | 8,963
Dairy & Livestock and Agribusiness [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Beginning Balance | 3,098 | 4,400
Charge-offs | 0 | 0
Recoveries | 0 | 4
Provision Recorded at Acquisition |  | 366
Provision for (Recapture of) Credit Losses | 154 |
Ending Balance | 3,252 | 4,770
Municipal Lease Finance Receivables [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Beginning Balance | 210 | 296
Charge-offs | 0 | 0
Recoveries | 0 | 0
Provision Recorded at Acquisition |  | (13)
Provision for (Recapture of) Credit Losses | (16) |
Ending Balance | 194 | 283
SFR Mortgage [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Beginning Balance | 535 | 366
Charge-offs | 0 | 0
Recoveries | 0 | 0
Provision Recorded at Acquisition |  | 43
Provision for (Recapture of) Credit Losses | (52) |
Ending Balance | 483 | 409
Consumer and Other Loans [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Beginning Balance | 461 | 532
Charge-offs | (2) | 0
Recoveries | 0 | 0
Provision Recorded at Acquisition |  | 63
Provision for (Recapture of) Credit Losses | 98 |
Ending Balance | $ 557 | $ 595

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- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(4) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
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- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(3) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph c -Publisher SEC + Details
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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481696/310-30-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(1) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (g) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480418/310-10-S99-4 + Details
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