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Stock Options and Other Equity-Based Incentive Instruments - Additional Information (Detail) - USD ($) $ in Thousands | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2022 | Dec. 31, 2021 | Apr. 16, 2019
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] |  |  |
Weighted-average remaining contractual term (in years) | 10 months 24 days |  |
Number of units released (in shares) | 0 |  |
Number of units increased (in shares) | 147,287 |  |
Restricted Stock Units (RSUs) | Service Condition Vesting RSUs |  |  |
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] |  |  |
Number of units outstanding expected to vest (in shares) | 99,554 | 103,517 |
Pre-tax compensation costs | $ 3,351 |  |
Number of units released (in shares) | 45,482 |  |
Restricted Stock Units (RSUs) | Market Plus Service Condition Vesting RSUs |  |  |
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] |  |  |
Number of units outstanding expected to vest (in shares) | 98,191 | 99,763 |
Weighted-average remaining contractual term (in years) | 1 year |  |
Pre-tax compensation costs | $ 1,090 |  |
Number of units released (in shares) | 0 |  |
2019 Plan |  |  |
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items] |  |  |
Aggregate number of shares of TriCo's common stock issued (in shares) |  |  | 1,500,000

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- Definition Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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