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Goodwill and Other Intangible Assets - Summary of Goodwill Intangible (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 304,442
Additions	0
Reductions	0
Ending balance	$ 304,442

X

- Definition

Goodwill, Other Reductions

+ References

No definition available.

+ Details

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Namespace Prefix:	tcbk_
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Balance Type:	credit
Period Type:	duration

X

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

+ References

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X

- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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