XML 94 R78.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Allowance for Credit Losses - Analysis of Past Due and Nonaccrual Loans (Detail) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Loans | $ 6,768,523 | $ 6,794,470
Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 4,577,632 | 4,394,802
Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,281,059 | 1,313,268
Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 471,271 | 586,455
Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 279,933 | 347,198
Agriculture production |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 151,822 | 144,497
Leases |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 6,806 | 8,250
CRE non-owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,323,036 | 2,217,806
CRE owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 961,415 | 956,440
Multifamily | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,028,035 | 949,502
Farmland | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 265,146 | 271,054
SFR 1-4 1st DT liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 859,660 | 883,438
SFR HELOCs and junior liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 363,420 | 356,813
Other | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 57,979 | 73,017
Financial asset originated |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 6,768,523 | 6,794,470
Financial asset originated | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 4,577,632 | 4,394,802
Financial asset originated | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,281,059 | 1,313,268
Financial asset originated | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 471,271 | 586,455
Financial asset originated | Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 279,933 | 347,198
Financial asset originated | Agriculture production |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 151,822 | 144,497
Financial asset originated | Leases |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 6,806 | 8,250
Financial asset originated | CRE non-owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,323,036 | 2,217,806
Financial asset originated | CRE owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 961,415 | 956,440
Financial asset originated | Multifamily | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,028,035 | 949,502
Financial asset originated | Farmland | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 265,146 | 271,054
Financial asset originated | SFR 1-4 1st DT liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 859,660 | 883,438
Financial asset originated | SFR HELOCs and junior liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 363,420 | 356,813
Financial asset originated | Other | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 57,979 | 73,017
Total Past Due Loans | Financial asset originated |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 32,711 | 19,415
Total Past Due Loans | Financial asset originated | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 18,066 | 12,024
Total Past Due Loans | Financial asset originated | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 3,875 | 2,937
Total Past Due Loans | Financial asset originated | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 10,102 | 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 | 668 | 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 | 2,673 | 5,258
Total Past Due Loans | Financial asset originated | CRE owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 5,329 | 281
Total Past Due Loans | Financial asset originated | Multifamily | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,120 | 0
Total Past Due Loans | Financial asset originated | Farmland | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 8,944 | 6,485
Total Past Due Loans | Financial asset originated | SFR 1-4 1st DT liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,562 | 2,080
Total Past Due Loans | Financial asset originated | SFR HELOCs and junior liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,131 | 639
Total Past Due Loans | Financial asset originated | Other | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 182 | 218
30-59 days | Financial asset originated |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 6,477 | 6,134
30-59 days | Financial asset originated | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 5,652 | 4,545
30-59 days | Financial asset originated | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 251 | 305
30-59 days | Financial asset originated | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 537 | 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 | 37 | 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 | 221 | 3,876
30-59 days | Financial asset originated | CRE owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,625 | 34
30-59 days | Financial asset originated | Multifamily | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,120 | 0
30-59 days | Financial asset originated | Farmland | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,686 | 635
30-59 days | Financial asset originated | SFR 1-4 1st DT liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 141
30-59 days | Financial asset originated | SFR HELOCs and junior liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 201 | 16
30-59 days | Financial asset originated | Other | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 50 | 148
60-89 days | Financial asset originated |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,681 | 6,770
60-89 days | Financial asset originated | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 198 | 3,798
60-89 days | Financial asset originated | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 858 | 1,489
60-89 days | Financial asset originated | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 308 | 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 | 317 | 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 | 85 | 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 | 113 | 3,798
60-89 days | Financial asset originated | SFR 1-4 1st DT liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 6 | 1,449
60-89 days | Financial asset originated | SFR HELOCs and junior liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 852 | 0
60-89 days | Financial asset originated | Other | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 40
> 90 days | Financial asset originated |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 24,553 | 6,511
> 90 days | Financial asset originated | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 12,216 | 3,681
> 90 days | Financial asset originated | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,766 | 1,143
> 90 days | Financial asset originated | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 9,257 | 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 | 314 | 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 | 2,452 | 1,382
> 90 days | Financial asset originated | CRE owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 3,619 | 247
> 90 days | Financial asset originated | Multifamily | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
> 90 days | Financial asset originated | Farmland | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 6,145 | 2,052
> 90 days | Financial asset originated | SFR 1-4 1st DT liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,556 | 490
> 90 days | Financial asset originated | SFR HELOCs and junior liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,078 | 623
> 90 days | Financial asset originated | Other | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 132 | 30
Current | Financial asset originated |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 6,735,812 | 6,775,055
Current | Financial asset originated | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 4,559,566 | 4,382,778
Current | Financial asset originated | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,277,184 | 1,310,331
Current | Financial asset originated | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 461,169 | 583,952
Current | Financial asset originated | Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 279,933 | 347,198
Current | Financial asset originated | Agriculture production |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 151,154 | 142,993
Current | Financial asset originated | Leases |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 6,806 | 7,803
Current | Financial asset originated | CRE non-owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,320,363 | 2,212,548
Current | Financial asset originated | CRE owner occupied | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 956,086 | 956,159
Current | Financial asset originated | Multifamily | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,026,915 | 949,502
Current | Financial asset originated | Farmland | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 256,202 | 264,569
Current | Financial asset originated | SFR 1-4 1st DT liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 858,098 | 881,358
Current | Financial asset originated | SFR HELOCs and junior liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 361,289 | 356,174
Current | Financial asset originated | Other | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | $ 57,797 | $ 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: |