XML 153 R139.htm IDEA: XBRL DOCUMENT v3.24.0.1

Fair Value Measurement - Quantitative Information about Fair Value Measurements for Financial Instruments Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Losses from Fair Value Adjustments Assets and Liabilities	$ (4,810)	$ (1,802)
Fair Value Nonrecurring Basis
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	4,225	6,030
Individually evaluated loans
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	4,175	5,719
Individually evaluated loans | Fair Value Nonrecurring Basis
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	4,175	5,719
Losses from Fair Value Adjustments Assets and Liabilities	(4,498)	(2,283)
Real estate owned
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	50	311
Real estate owned | Fair Value Nonrecurring Basis
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value	50	311
Foreclosed Assets | Fair Value Nonrecurring Basis
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Losses from Fair Value Adjustments Assets and Liabilities	$ (312)	$ 481

X

- Definition

Losses from Fair Value Adjustments Assets and Liabilities

+ References

No definition available.

+ Details

Name:	tcbk_LossesFromFairValueAdjustmentsAssetsAndLiabilities
Namespace Prefix:	tcbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

+ Details

Name:	us-gaap_AssetsFairValueDisclosure
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

No definition available.

+ Details

Name:	us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsNonrecurringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=tcbk_IndividuallyEvaluatedLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=tcbk_RealEstateOwnedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=tcbk_ForeclosedAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: