XML 72 R52.htm IDEA: XBRL DOCUMENT
v3.24.3

Allowance for Credit Losses - Analysis of Past Due and Nonaccrual Loans (Detail) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Loans | $ 6,683,891 | $ 6,794,470
Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 4,487,524 | 4,394,802
Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,283,963 | 1,313,268
Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 484,763 | 586,455
Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 276,095 | 347,198
Agriculture production |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 144,123 | 144,497
Leases |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 7,423 | 8,250
CRE non-owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,251,705 | 2,217,806
CRE owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 947,278 | 956,440
Multifamily | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,020,466 | 949,502
Farmland | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 268,075 | 271,054
SFR 1-4 1st DT liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 865,756 | 883,438
SFR HELOCs and junior liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 355,341 | 356,813
Other | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 62,866 | 73,017
Financial Asset Originated |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 6,683,891 | 6,794,470
Financial Asset Originated | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 4,487,524 | 4,394,802
Financial Asset Originated | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,283,963 | 1,313,268
Financial Asset Originated | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 484,763 | 586,455
Financial Asset Originated | Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 276,095 | 347,198
Financial Asset Originated | Agriculture production |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 144,123 | 144,497
Financial Asset Originated | Leases |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 7,423 | 8,250
Financial Asset Originated | CRE non-owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,251,705 | 2,217,806
Financial Asset Originated | CRE owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 947,278 | 956,440
Financial Asset Originated | Multifamily | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,020,466 | 949,502
Financial Asset Originated | Farmland | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 268,075 | 271,054
Financial Asset Originated | SFR 1-4 1st DT liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 865,756 | 883,438
Financial Asset Originated | SFR HELOCs and junior liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 355,341 | 356,813
Financial Asset Originated | Other | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 62,866 | 73,017
Total Past Due Loans | Financial Asset Originated |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 37,886 | 19,415
Total Past Due Loans | Financial Asset Originated | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 17,538 | 12,024
Total Past Due Loans | Financial Asset Originated | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 8,796 | 2,937
Total Past Due Loans | Financial Asset Originated | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 11,509 | 2,503
Total Past Due Loans | Financial Asset Originated | Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Total Past Due Loans | Financial Asset Originated | Agriculture production |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 43 | 1,504
Total Past Due Loans | Financial Asset Originated | Leases |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 447
Total Past Due Loans | Financial Asset Originated | CRE non-owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 4,077 | 5,258
Total Past Due Loans | Financial Asset Originated | CRE owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 3,262 | 281
Total Past Due Loans | Financial Asset Originated | Multifamily | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 502 | 0
Total Past Due Loans | Financial Asset Originated | Farmland | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 9,697 | 6,485
Total Past Due Loans | Financial Asset Originated | SFR 1-4 1st DT liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 4,152 | 2,080
Total Past Due Loans | Financial Asset Originated | SFR HELOCs and junior liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 4,347 | 639
Total Past Due Loans | Financial Asset Originated | Other | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 297 | 218
30-59 days | Financial Asset Originated |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 6,429 | 6,134
30-59 days | Financial Asset Originated | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,236 | 4,545
30-59 days | Financial Asset Originated | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 3,020 | 305
30-59 days | Financial Asset Originated | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,158 | 244
30-59 days | Financial Asset Originated | Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
30-59 days | Financial Asset Originated | Agriculture production |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 15 | 593
30-59 days | Financial Asset Originated | Leases |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 447
30-59 days | Financial Asset Originated | CRE non-owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,035 | 3,876
30-59 days | Financial Asset Originated | CRE owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 34
30-59 days | Financial Asset Originated | Multifamily | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
30-59 days | Financial Asset Originated | Farmland | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,201 | 635
30-59 days | Financial Asset Originated | SFR 1-4 1st DT liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 214 | 141
30-59 days | Financial Asset Originated | SFR HELOCs and junior liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,678 | 16
30-59 days | Financial Asset Originated | Other | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 128 | 148
60-89 days | Financial Asset Originated |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 9,847 | 6,770
60-89 days | Financial Asset Originated | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 456 | 3,798
60-89 days | Financial Asset Originated | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 890 | 1,489
60-89 days | Financial Asset Originated | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 8,501 | 605
60-89 days | Financial Asset Originated | Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
60-89 days | Financial Asset Originated | Agriculture production |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 878
60-89 days | Financial Asset Originated | Leases |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
60-89 days | Financial Asset Originated | CRE non-owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
60-89 days | Financial Asset Originated | CRE owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 251 | 0
60-89 days | Financial Asset Originated | Multifamily | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
60-89 days | Financial Asset Originated | Farmland | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 205 | 3,798
60-89 days | Financial Asset Originated | SFR 1-4 1st DT liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 1,449
60-89 days | Financial Asset Originated | SFR HELOCs and junior liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 810 | 0
60-89 days | Financial Asset Originated | Other | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 80 | 40
> 90 days | Financial Asset Originated |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 21,610 | 6,511
> 90 days | Financial Asset Originated | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 14,846 | 3,681
> 90 days | Financial Asset Originated | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 4,886 | 1,143
> 90 days | Financial Asset Originated | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,850 | 1,654
> 90 days | Financial Asset Originated | Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
> 90 days | Financial Asset Originated | Agriculture production |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 28 | 33
> 90 days | Financial Asset Originated | Leases |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
> 90 days | Financial Asset Originated | CRE non-owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 3,042 | 1,382
> 90 days | Financial Asset Originated | CRE owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 3,011 | 247
> 90 days | Financial Asset Originated | Multifamily | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 502 | 0
> 90 days | Financial Asset Originated | Farmland | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 8,291 | 2,052
> 90 days | Financial Asset Originated | SFR 1-4 1st DT liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 3,938 | 490
> 90 days | Financial Asset Originated | SFR HELOCs and junior liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 859 | 623
> 90 days | Financial Asset Originated | Other | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 89 | 30
Current | Financial Asset Originated |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 6,646,005 | 6,775,055
Current | Financial Asset Originated | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 4,469,986 | 4,382,778
Current | Financial Asset Originated | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,275,167 | 1,310,331
Current | Financial Asset Originated | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 473,254 | 583,952
Current | Financial Asset Originated | Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 276,095 | 347,198
Current | Financial Asset Originated | Agriculture production |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 144,080 | 142,993
Current | Financial Asset Originated | Leases |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 7,423 | 7,803
Current | Financial Asset Originated | CRE non-owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,247,628 | 2,212,548
Current | Financial Asset Originated | CRE owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 944,016 | 956,159
Current | Financial Asset Originated | Multifamily | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,019,964 | 949,502
Current | Financial Asset Originated | Farmland | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 258,378 | 264,569
Current | Financial Asset Originated | SFR 1-4 1st DT liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 861,604 | 881,358
Current | Financial Asset Originated | SFR HELOCs and junior liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 350,994 | 356,174
Current | Financial Asset Originated | Other | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | $ 62,569 | $ 72,799

X
- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-14 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 80 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-80 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=tcbk_CommercialAndIndustrialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=tcbk_ConstructionPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=tcbk_AgricultureProductionPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_FinanceLeasesPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=tcbk_CRENonOwnerOccupiedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=tcbk_CREOwnerOccupiedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=srt_MultifamilyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=tcbk_AgricultureLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=tcbk_SFR141stDTLiensMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=tcbk_OtherLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditLossStatusAxis=us-gaap_FinancialAssetOriginatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancialAssetPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables30To59DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables60To89DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancialAssetNotPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |