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Summary of Significant Accounting Policies (Policies) | 3 Months Ended
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Mar. 31, 2025
Accounting Policies [Abstract] |
Description of Business and Basis of Presentation | Description of Business and Basis of Presentation TriCo Bancshares (the “Company” or “we”) is a California corporation organized to act as a bank holding company for Tri Counties Bank (the “Bank”). The Company and the Bank are headquartered in Chico, California. The Bank is a California-chartered bank that is engaged in the general commercial banking business in 31 California counties. The consolidated financial statements are prepared in accordance with accounting policies generally accepted in the United States of America and general practices in the banking industry. All adjustments necessary for a fair presentation of these consolidated financial statements have been included and are of a normal and recurring nature. The financial statements include the accounts of the Company. All inter-company accounts and transactions have been eliminated in consolidation. The Company has five capital subsidiary business trusts (collectively, the “Capital Trusts”) that issued trust preferred securities, including two organized by the Company and three acquired with the acquisition of North Valley Bancorp. For financial reporting purposes, the Company’s investments in the Capital Trusts of $1.8 million are accounted for under the equity method and, accordingly, are not consolidated and are included in other assets on the consolidated balance sheet. See the Note 8 - footnote Junior Subordinated Debt for additional information on borrowings outstanding.
Use of Estimates in the Preparation of Financial Statements | Use of Estimates in the Preparation of Financial Statements The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires Management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission. These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024 (the “2024 Annual Report”). The Company believes that the disclosures made are adequate to make the information not misleading.
Segment and Significant Group Concentration of Credit Risk | Segment and Significant Group Concentration of Credit Risk The Company grants agribusiness, commercial, consumer, and residential loans to customers located throughout California. The Company has a diversified loan portfolio within the business segments located in this geographical area. While the chief operating decision-maker (CODM) may monitor the revenue streams of the various products and services, operations are managed, financial performance is evaluated, and decisions are generally made on a Company-wide basis. Discrete financial information is not available other than on a Company-wide basis. Accordingly, operations are considered by management to be aggregated in one reportable operating segment.
Geographical Descriptions | Geographical Descriptions For the purpose of describing the geographical location of the Company’s operations, the Company has defined northern California as that area of California north of, and including, Stockton to the east and San Jose to the west; central California as that area of the state south of Stockton and San Jose, to and including, Bakersfield to the east and San Luis Obispo to the west; and southern California as that area of the state south of Bakersfield and San Luis Obispo.
Reclassification | Reclassification Some items in the prior year consolidated financial statements were reclassified to conform to the current presentation. Reclassifications had no effect on prior year net income or shareholders’ equity.
Cash and Cash Equivalents | Cash and Cash Equivalents Net cash flows are reported for loan and deposit transactions and other borrowings. For purposes of the consolidated statement of cash flows, cash, due from banks with original maturities less than 90 days, interest-earning deposits in other banks, and Federal funds sold are considered to be cash equivalents.
Allowance for Credit Losses - Securities | Allowance for Credit Losses - Securities The Company measures expected credit losses on HTM debt securities on a collective basis by major security type, then further disaggregated by sector and bond rating. Accrued interest receivable on HTM debt securities was considered insignificant at March 31, 2025 and December 31, 2024 and is therefore excluded from the estimate of credit losses. The estimate of expected credit losses considers historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts based on current and expected changes in credit ratings and default rates. Based on the implied guarantees of the U. S. Government or its agencies related to certain of these investment securities, and the absence of any historical or expected losses, substantially all qualify for a zero loss assumption. Management has separately evaluated its HTM investment securities from obligations of state and political subdivisions utilizing the historical loss data represented by similar securities over a period of time spanning nearly 50 years. As a result of this evaluation, management determined that the expected credit losses associated with these securities is not significant for financial reporting purposes and therefore, no allowance for credit losses has been recognized for any period reported. The Company evaluates AFS debt securities in an unrealized loss position to determine whether the decline in the fair value below the amortized cost basis (impairment) is due to credit-related factors or noncredit-related factors. Any impairment that is not credit related is recognized in other comprehensive income, net of applicable taxes. Credit-related impairment is recognized as an allowance for credit losses on the balance sheet, limited to the amount by which the amortized cost basis exceeds the fair value, with a corresponding adjustment to earnings. Both the allowance for credit losses and the adjustment to net income may be reversed if conditions change. However, if the Company intends to sell an impaired available for sale debt security or more likely than not will be required to sell such a security before recovering its amortized cost basis, the entire impairment amount is recognized in earnings with a corresponding adjustment to the security's amortized cost basis. In evaluating available for sale debt securities in unrealized loss positions for impairment and the criteria regarding its intent or requirement to sell such securities, the Company considers the extent to which fair value is less than amortized cost, whether the securities are issued by the federal government or its agencies, whether downgrades by bond rating agencies have occurred, and the results of reviews of the issuers' financial condition, among other factors. Changes in the allowance for credit losses are recorded as provision for (or reversal of) credit loss expense. Losses are charged against the ACL when management believes the uncollectability of an available for sale debt security is confirmed or when either of the criteria regarding intent or requirement to sell is met.
Loans, Allowance for Credit Losses - Loans and Unfunded Commitments | Loans Loans that management has the intent and ability to hold until maturity or payoff are reported at principal amount outstanding, net of deferred loan fees and costs. Loans are placed in nonaccrual status when reasonable doubt exists as to the full, timely collection of interest or principal, or a loan becomes contractually past due by 90 days or more with respect to interest or principal and is not well secured and in the process of collection. When a loan is placed on nonaccrual status, all interest previously accrued but not collected is reversed against interest income. Income on such loans is then recognized only to the extent that cash is received and where the future collection of principal is considered probable. Interest accruals are resumed on such loans only when they are brought fully current with respect to interest and principal and when, in the judgment of Management, the loan is estimated to be fully collectible as to both principal and interest. Accrued interest receivable is not included in the calculation of the allowance for credit losses. Allowance for Credit Losses - Loans The ACL is a valuation account that is deducted from the loan's amortized cost basis to present the net amount expected to be collected on the loans. Loans are charged-off against the allowance when management believes the recorded loan balance is confirmed as uncollectible. Expected recoveries do not exceed the aggregate of amounts previously charged-off and expected to be charged-off. Regardless of the determination that a charge-off is appropriate for financial accounting purposes, the Company manages its loan portfolio by continually monitoring, where possible, a borrower's ability to pay through the collection of financial information, delinquency status, borrower discussion and the encouragement to repay in accordance with the original contract or modified terms, if appropriate. The ACL consists of two primary components: (1) the determination of an ACL for loans that are individually identified and analyzed and (2) establishment of an ACL for loans collectively analyzed. To determine the collectively analyzed portion of the ACL, the Company identified various portfolio segments based on loan attributes such as, but not limited to; collateral type and loan purpose or use, to ensure loans with similar risk characteristics are measured on a collective basis. The Company utilizes three different loss model configurations and assigned each of the portfolio segments to one of the three loss model configurations. Historical credit loss experience for financial institutions nationwide, paired with relevant forecasts of macroeconomic conditions, forms the basis for the estimate of expected credit losses amongst the collectively analyzed loan portfolio. Further, each of the three loss model configurations utilized by the Company incorporate unique inputs, such as the following: (1) Commercial Real Estate: origination vintage, delinquency status, loan-to-value as of the origination date, stated maturity date, property type, and property status (2) Commercial and Industrial: loan maturity, credit spread at origination, risk grade, and loan type (3) Consumer: FICO, origination vintage, product type, and state geography if applicable One of the key assumptions requiring significant judgment in the process is estimating the Company's ACL relates to macroeconomic forecasts that are incorporated into the loss models. As all economic outlooks are inherently uncertain, the Company utilizes various data points to better inform management's estimation of expected credit losses given observable and forecast changes in the economic environment and market conditions. These macroeconomic scenario forecasts incorporate variables that have historically been key drivers of increases and decreases in credit losses. These variables include, but are not limited to: gross domestic product, unemployment rate, consumer price index, corporate interest rate spreads, and economic policy. After quantitative considerations, management evaluates the need for additional qualitative adjustments that consider the expected impact of certain factors not fully captured in the quantitative and macroeconomic reserve calculations. These qualitative adjustments may apply to the collectively analyzed pool as a whole, one or more of the three loss models, or to one or more of the loan portfolio segments. PCD assets are assets acquired at a discount that is due, in part, to credit quality deterioration since their origination. PCD assets are initially recorded and accounted for at fair value, by taking the sum of the present value of expected future cash flows and an allowance for credit losses, at acquisition. The allowance for credit losses for PCD assets is recorded through a gross-up of reserves on the balance sheet, while the allowance for acquired non-PCD assets, such as loans, is recorded through the provision for credit losses on the income statement, consistent with originated loans. Subsequent to acquisition, the allowance for credit losses for PCD loans will generally follow the same forward-looking estimation, provision, and charge-off process as non-PCD acquired and originated loans Allowance for Credit Losses - Unfunded commitments The Company is required to include unfunded commitments that are expected to be funded in the future within the allowance for credit loss calculation, other than those that are unconditionally cancellable. To arrive at that reserve, the reserve percentage for each applicable segment is applied to the unused portion of the expected commitment balance and is multiplied by the expected funding rate. To determine the expected funding rate, the Company uses a historical utilization rate for each segment. The allowance for credit losses for off-balance-sheet credit risk exposures is reported in other liabilities in the condensed consolidated balance sheets.
Accounting Standards Update | Accounting Standards Update Accounting standards adopted in the current period
Standard |  | Summary of Guidance |  | Effects on financial statements
ASU 2023-09 - Income Taxes (Topic 740): Improvements to Income Tax Disclosures |  | • Requires a tabular rate reconciliation using both percentages and reporting currency amounts between the reported amount of income tax expense (or benefit) to the amount of statutory federal income tax at current rates for specified categories using specified disaggregation criteria. • The amount of net income taxes paid for federal, state, and foreign taxes, as well as the amount paid to any jurisdiction that net taxes exceed a 5% quantitative threshold. • The amendments will require the disclosure of pre-tax income disaggregated between domestic and foreign, as well as income tax expense disaggregated by federal, state, and foreign. • The amendment also eliminates certain disclosures related to unrecognized tax benefits and certain temporary differences. |  | • The Company adopted this ASU for the period beginning January 1, 2025. The updated disclosure requirements are required to be reported on an annual basis and will be included within the Company's December 31, 2025 10-K.
Accounting standards yet to be adopted
Standard |  | Summary of Guidance |  | Effects on financial statements
None |  |  |  |

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