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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 | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | $ 68,660 |  |  |  | $ 63,613 | $ 68,660 | $ 63,613 |
Beginning Balance |  |  |  |  |  |  |  | 63,613 |  | 63,613 | $ 59,585
Charge-offs |  |  |  |  |  |  |  |  | (666) | (454) | (291)
Recoveries |  |  |  |  |  |  |  |  | 358 | 501 | 2,819
Provision for loan losses | $ 0 | $ 0 | $ 11,500 | 12,000 | $ 0 | $ 1,500 | $ 2,000 | 1,500 | 23,500 | 5,000 | 1,500
Ending Balance | 93,692 |  |  |  | 68,660 |  |  |  | 93,692 | 68,660 | 63,613
Ending Balance |  |  |  |  |  |  |  |  |  |  | 63,613
Previously Reported [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 68,660 |  |  |  |  | 68,660 |  |
Ending Balance |  |  |  |  | 68,660 |  |  |  |  | 68,660 |
Impact of ASU 2016-13 Adoption [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 1,840 |  |  |  |  | 1,840 |  |
Ending Balance |  |  |  |  | 1,840 |  |  |  |  | 1,840 |
PCI Loans [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  |  |  |  |  | 204 |  | 204 | 367
Charge-offs |  |  |  |  |  |  |  |  |  |  | 0
Recoveries |  |  |  |  |  |  |  |  |  |  | 0
Provision for loan losses |  |  |  |  |  |  |  |  |  |  | (163)
Ending Balance |  |  |  |  |  |  |  |  |  |  | 204
Commercial Real Estate [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 48,629 |  |  |  | 45,097 | 48,629 | 45,097 |
Beginning Balance |  |  |  |  |  |  |  | 44,934 |  | 44,934 | 41,722
Charge-offs |  |  |  |  |  |  |  |  | 0 | 0 | 0
Recoveries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Provision for loan losses |  |  |  |  |  |  |  |  | 23,263 | 3,532 | 3,212
Ending Balance | 75,439 |  |  |  | 48,629 |  |  |  | 75,439 | 48,629 | 45,097
Ending Balance |  |  |  |  |  |  |  |  |  |  | 44,934
Commercial Real Estate [Member] | Previously Reported [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 48,629 |  |  |  |  | 48,629 |  |
Ending Balance |  |  |  |  | 48,629 |  |  |  |  | 48,629 |
Commercial Real Estate [Member] | Impact of ASU 2016-13 Adoption [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 3,547 |  |  |  |  | 3,547 |  |
Ending Balance |  |  |  |  | 3,547 |  |  |  |  | 3,547 |
Construction [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 858 |  |  |  | 981 | 858 | 981 |
Beginning Balance |  |  |  |  |  |  |  | 981 |  | 981 | 984
Charge-offs |  |  |  |  |  |  |  |  | 0 | 0 | 0
Recoveries |  |  |  |  |  |  |  |  | 11 | 12 | 2,506
Provision for loan losses |  |  |  |  |  |  |  |  | 410 | (135) | (2,509)
Ending Balance | 1,934 |  |  |  | 858 |  |  |  | 1,934 | 858 | 981
Ending Balance |  |  |  |  |  |  |  |  |  |  | 981
Construction [Member] | Previously Reported [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 858 |  |  |  |  | 858 |  |
Ending Balance |  |  |  |  | 858 |  |  |  |  | 858 |
Construction [Member] | Impact of ASU 2016-13 Adoption [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 655 |  |  |  |  | 655 |  |
Ending Balance |  |  |  |  | 655 |  |  |  |  | 655 |
Small Business Administration [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 1,453 |  |  |  | 1,078 | 1,453 | 1,078 |
Beginning Balance |  |  |  |  |  |  |  | 1,062 |  | 1,062 | 869
Charge-offs |  |  |  |  |  |  |  |  | (362) | (321) | (257)
Recoveries |  |  |  |  |  |  |  |  | 72 | 9 | 20
Provision for loan losses |  |  |  |  |  |  |  |  | 11 | 687 | 430
Ending Balance | 2,992 |  |  |  | 1,453 |  |  |  | 2,992 | 1,453 | 1,078
Ending Balance |  |  |  |  |  |  |  |  |  |  | 1,062
Small Business Administration [Member] | Previously Reported [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 1,453 |  |  |  |  | 1,453 |  |
Ending Balance |  |  |  |  | 1,453 |  |  |  |  | 1,453 |
Small Business Administration [Member] | Impact of ASU 2016-13 Adoption [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 1,818 |  |  |  |  | 1,818 |  |
Ending Balance |  |  |  |  | 1,818 |  |  |  |  | 1,818 |
SBA - Paycheck Protection Program (PPP) [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Charge-offs |  |  |  |  |  |  |  |  | 0 |  |
Recoveries |  |  |  |  |  |  |  |  | 0 |  |
Provision for loan losses |  |  |  |  |  |  |  |  | 0 |  |
Ending Balance | 0 |  |  |  |  |  |  |  | 0 |  |
SBA - Paycheck Protection Program (PPP) [Member] | Previously Reported [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 0 |  |  |  |  | 0 |  |
Ending Balance |  |  |  |  | 0 |  |  |  |  | 0 |
SBA - Paycheck Protection Program (PPP) [Member] | Impact of ASU 2016-13 Adoption [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 0 |  |  |  |  | 0 |  |
Ending Balance |  |  |  |  | 0 |  |  |  |  | 0 |
Commercial and Industrial [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 8,880 |  |  |  | 7,528 | 8,880 | 7,528 |
Beginning Balance |  |  |  |  |  |  |  | 7,520 |  | 7,520 | 7,280
Charge-offs |  |  |  |  |  |  |  |  | (195) | (48) | (10)
Recoveries |  |  |  |  |  |  |  |  | 10 | 255 | 82
Provision for loan losses |  |  |  |  |  |  |  |  | 889 | 1,145 | 168
Ending Balance | 7,142 |  |  |  | 8,880 |  |  |  | 7,142 | 8,880 | 7,528
Ending Balance |  |  |  |  |  |  |  |  |  |  | 7,520
Commercial and Industrial [Member] | Previously Reported [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 8,880 |  |  |  |  | 8,880 |  |
Ending Balance |  |  |  |  | 8,880 |  |  |  |  | 8,880 |
Commercial and Industrial [Member] | Impact of ASU 2016-13 Adoption [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | (2,442) |  |  |  |  | (2,442) |  |
Ending Balance |  |  |  |  | (2,442) |  |  |  |  | (2,442) |
Dairy & Livestock and Agribusiness [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 5,255 |  |  |  | 5,225 | 5,255 | 5,225 |
Beginning Balance |  |  |  |  |  |  |  | 5,215 |  | 5,215 | 4,647
Charge-offs |  |  |  |  |  |  |  |  | 0 | (78) | 0
Recoveries |  |  |  |  |  |  |  |  | 0 | 19 | 19
Provision for loan losses |  |  |  |  |  |  |  |  | (1,120) | 89 | 549
Ending Balance | 3,949 |  |  |  | 5,255 |  |  |  | 3,949 | 5,255 | 5,225
Ending Balance |  |  |  |  |  |  |  |  |  |  | 5,215
Dairy & Livestock and Agribusiness [Member] | Previously Reported [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 5,255 |  |  |  |  | 5,255 |  |
Ending Balance |  |  |  |  | 5,255 |  |  |  |  | 5,255 |
Dairy & Livestock and Agribusiness [Member] | Impact of ASU 2016-13 Adoption [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | (186) |  |  |  |  | (186) |  |
Ending Balance |  |  |  |  | (186) |  |  |  |  | (186) |
Municipal Lease Finance Receivables [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 623 |  |  |  | 775 | 623 | 775 |
Beginning Balance |  |  |  |  |  |  |  | 775 |  | 775 | 851
Charge-offs |  |  |  |  |  |  |  |  | 0 | 0 | 0
Recoveries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Provision for loan losses |  |  |  |  |  |  |  |  | (133) | (152) | (76)
Ending Balance | 74 |  |  |  | 623 |  |  |  | 74 | 623 | 775
Ending Balance |  |  |  |  |  |  |  |  |  |  | 775
Municipal Lease Finance Receivables [Member] | Previously Reported [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 623 |  |  |  |  | 623 |  |
Ending Balance |  |  |  |  | 623 |  |  |  |  | 623 |
Municipal Lease Finance Receivables [Member] | Impact of ASU 2016-13 Adoption [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | (416) |  |  |  |  | (416) |  |
Ending Balance |  |  |  |  | (416) |  |  |  |  | (416) |
SFR Mortgage [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 2,339 |  |  |  | 2,197 | 2,339 | 2,197 |
Beginning Balance |  |  |  |  |  |  |  | 2,196 |  | 2,196 | 2,112
Charge-offs |  |  |  |  |  |  |  |  | 0 | 0 | (13)
Recoveries |  |  |  |  |  |  |  |  | 206 | 196 | 51
Provision for loan losses |  |  |  |  |  |  |  |  | (135) | (54) | 46
Ending Balance | 367 |  |  |  | 2,339 |  |  |  | 367 | 2,339 | 2,197
Ending Balance |  |  |  |  |  |  |  |  |  |  | 2,196
SFR Mortgage [Member] | Previously Reported [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 2,339 |  |  |  |  | 2,339 |  |
Ending Balance |  |  |  |  | 2,339 |  |  |  |  | 2,339 |
SFR Mortgage [Member] | Impact of ASU 2016-13 Adoption [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | (2,043) |  |  |  |  | (2,043) |  |
Ending Balance |  |  |  |  | (2,043) |  |  |  |  | (2,043) |
Consumer and Other Loans [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 623 |  |  |  | 732 | 623 | 732 |
Beginning Balance |  |  |  |  |  |  |  | $ 726 |  | 726 | 753
Charge-offs |  |  |  |  |  |  |  |  | (109) | (7) | (11)
Recoveries |  |  |  |  |  |  |  |  | 59 | 10 | 141
Provision for loan losses |  |  |  |  |  |  |  |  | 315 | (112) | (157)
Ending Balance | $ 1,795 |  |  |  | 623 |  |  |  | 1,795 | 623 | 732
Ending Balance |  |  |  |  |  |  |  |  |  |  | $ 726
Consumer and Other Loans [Member] | Previously Reported [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 623 |  |  |  |  | 623 |  |
Ending Balance |  |  |  |  | 623 |  |  |  |  | 623 |
Consumer and Other Loans [Member] | Impact of ASU 2016-13 Adoption [Member] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | $ 907 |  |  |  |  | $ 907 |  |
Ending Balance |  |  |  |  | $ 907 |  |  |  |  | $ 907 |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
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Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=cvbf_ConsumerAndOtherLoansMember
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Data Type: | na
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