TriCo Bancshares (TCBK) 10-K 29 Feb 24 2023 FY Annual report Financial data

Cover Page

Cover Page - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2023	Feb. 23, 2024	Jun. 30, 2023
Cover [Abstract]
Document Type	10-K
Document Period End Date	Dec. 31, 2023
Current Fiscal Year End Date	--12-31
Entity File Number	0-10661
Entity Incorporation, State or Country Code	CA
Entity Tax Identification Number	94-2792841
Entity Address, Address Line One	63 Constitution Drive
Entity Address, City or Town	Chico
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95973
City Area Code	530
Local Phone Number	898-0300
Title of 12(b) Security	Common Stock
Trading Symbol	TCBK
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Emerging Growth Company	false
Document Financial Statement Error Correction [Flag]	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 1.4
Entity Common Stock, Shares Outstanding		33,268,102
Documents Incorporated by Reference	The information required to be disclosed pursuant to Part III of this report either shall be (i) deemed to be incorporated by reference from selected portions of the Registrant’s definitive proxy statement for the annual meeting of shareholders to be held on May 23, 2024, if such proxy statement is filed with the Securities and Exchange Commission pursuant to Regulation 14A not later than 120 days after the end of the Registrant’s most recently completed fiscal year, or (ii) included in an amendment to this report filed with the Commission on Form 10-K/A not later than the end of such 120 day period.
Document Annual Report	true
Document Transition Report	false
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Entity Central Index Key	0000356171
Entity Registrant Name	TriCo Bancshares

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2023
Audit Information [Abstract]
Auditor Firm ID	659
Auditor Name	Moss Adams LLP
Auditor Location	San Francisco, California

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Assets:
Cash and due from banks	$ 81,626	$ 96,323
Cash at Federal Reserve and other banks	17,075	10,907
Cash and cash equivalents	98,701	107,230
Investment securities:
Marketable equity securities	2,634	2,598
Available for sale debt securities, at fair value (amortized cost of $2,384,325 and $2,742,987)	2,152,504	2,452,438
Securities held to maturity	133,494	160,983
Restricted equity securities	17,250	17,250
Loans held for sale	458	1,846
Loans	6,794,470	6,450,447
Allowance for credit losses	(121,522)	(105,680)
Total loans, net	6,672,948	6,344,767
Premises and equipment, net	71,347	72,327
Cash value of life insurance	136,892	133,742
Accrued interest receivable	36,768	31,856
Goodwill	304,442	304,442
Other intangible assets, net	10,552	16,670
Operating leases, right-of-use	26,133	26,862
Other assets	245,966	257,975
Total assets	9,910,089	9,930,986
Deposits:
Noninterest-bearing demand	2,722,689	3,502,095
Interest-bearing	5,111,349	4,826,918
Total deposits	7,834,038	8,329,013
Accrued interest payable	8,445	1,167
Operating lease liability	28,261	29,004
Other liabilities	145,982	159,741
Other borrowings	632,582	264,605
Junior subordinated debt	101,099	101,040
Total liabilities	8,750,407	8,884,570
Commitments and contingencies (Note 15)
Shareholders’ equity:
Preferred stock, no par value: 1,000,000 shares authorized; zero issued and outstanding at December 31, 2023 and 2022, respectively	0	0
Common stock, no par value: 50,000,000 shares authorized; issued and outstanding: 33,268,102 and 33,331,513 at December 31, 2023 and 2022, respectively	697,349	697,448
Retained earnings	615,502	542,873
Accumulated other comprehensive loss, net of tax	(153,169)	(193,905)
Total shareholders’ equity	1,159,682	1,046,416
Total liabilities and shareholders’ equity	$ 9,910,089	$ 9,930,986

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Available-for-sale, amortized cost	$ 2,384,325,000	$ 2,742,987,000
Allowance for credit loss	$ 0	$ 0
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	33,268,102	33,331,513
Common stock, shares outstanding (in shares)	33,268,102	33,331,513

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Interest and dividend income:
Loans, including fees	$ 356,710	$ 285,375	$ 242,269
Investments:
Taxable securities	73,924	59,395	29,361
Tax exempt securities	5,120	5,199	3,568
Dividends	1,294	1,137	991
Interest bearing cash at Federal Reserve and other banks	1,306	4,399	858
Total interest and dividend income	438,354	355,505	277,047
Interest expense:
Deposits	55,087	4,689	3,318
Other borrowings	19,712	421	22
Junior subordinated debt	6,878	4,419	2,168
Total interest expense	81,677	9,529	5,508
Net interest income	356,677	345,976	271,539
Provision for (benefit from) credit losses	23,990	18,470	(6,775)
Net interest income after provision for (benefit from) credit losses	332,687	327,506	278,314
Noninterest income:
Service charges and fees	50,088	49,765	43,948
Commissions on sale of non-deposit investment products	4,517	3,986	3,668
Increase in cash value of life insurance	3,150	2,858	2,775
Gain on sale of loans	1,166	2,342	9,580
Loss on sale of investment securities	(284)	0	0
Other	2,763	4,095	3,693
Total noninterest income	61,400	63,046	63,664
Noninterest expense:
Salaries and related benefits	135,795	129,852	106,351
Other	97,387	86,793	71,924
Total noninterest expense	233,182	216,645	178,275
Income before income taxes	160,905	173,907	163,703
Provision for income taxes	43,515	48,488	46,048
Net income	$ 117,390	$ 125,419	$ 117,655
Earnings per share:
Basic (in USD per share)	$ 3.53	$ 3.85	$ 3.96
Diluted (in USD per share)	$ 3.52	$ 3.83	$ 3.94

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 117,390	$ 125,419	$ 117,655
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on available for sale securities arising during the period, after reclassifications	41,365	(204,376)	(13,788)
Change in minimum pension liability, after reclassifications	(263)	8,101	2,602
Change in joint beneficiary agreement liability	(366)	1,389	(113)
Other comprehensive income (loss)	40,736	(194,886)	(11,299)
Comprehensive income (loss)	$ 158,126	$ (69,467)	$ 106,356

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2020		29,727,214
Beginning balance at Dec. 31, 2020	$ 925,114	$ 530,835	$ 381,999	$ 12,280
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	117,655		117,655
Other comprehensive income (loss)	(11,299)			(11,299)
Service condition RSU vesting	1,728	1,728
Market plus service condition RSU vesting	910	910
Stock options exercised	758	$ 758
Stock options exercised (in shares)		49,675
Service condition RSUs released (in shares)		45,492
Market plus service conditions RSUs released (in shares)		19,272
Market plus service condition RSUs released	0
Repurchase of common stock	(4,958)	$ (1,987)	(2,971)
Repurchase of common stock (in shares)		(111,229)
Dividends paid	(29,724)		(29,724)
Ending balance (in shares) at Dec. 31, 2021		29,730,424
Ending balance at Dec. 31, 2021	1,000,184	$ 532,244	466,959	981
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	125,419		125,419
Other comprehensive income (loss)	(194,886)			(194,886)
Service condition RSU vesting	2,883	2,883
Market plus service condition RSU vesting	986	986
Stock options exercised	$ 1,190	$ 1,190
Stock options exercised (in shares)	63,325	63,325
Service condition RSUs released (in shares)		50,076
Market plus service conditions RSUs released (in shares)		26,338
Issuance of common stock	$ 173,585	$ 173,585
Issuance of common stock (in shares)		4,105,518
Repurchase of common stock	(27,148)	$ (13,440)	(13,708)
Repurchase of common stock (in shares)		(644,168)
Dividends paid	$ (35,797)		(35,797)
Ending balance (in shares) at Dec. 31, 2022	33,331,513	33,331,513
Ending balance at Dec. 31, 2022	$ 1,046,416	$ 697,448	542,873	(193,905)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	117,390		117,390
Other comprehensive income (loss)	40,736			40,736
Service condition RSU vesting	2,806	2,806
Market plus service condition RSU vesting	1,319	1,319
Stock options exercised	$ 156	$ 156
Stock options exercised (in shares)	8,000	8,000
Service condition RSUs released (in shares)		81,902
Market plus service conditions RSUs released (in shares)		55,928
Repurchase of common stock	$ (9,240)	$ (4,380)	(4,860)
Repurchase of common stock (in shares)		(209,241)
Dividends paid	$ (39,901)		(39,901)
Ending balance (in shares) at Dec. 31, 2023	33,268,102	33,268,102
Ending balance at Dec. 31, 2023	$ 1,159,682	$ 697,349	$ 615,502	$ (153,169)

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Stockholders' Equity [Abstract]
Dividends paid (in dollars per share)	$ 1.20	$ 1.10	$ 1

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating activities:
Net income		$ 117,390,000	$ 125,419,000	$ 117,655,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of premises and equipment, and amortization		6,366,000	6,012,000	6,363,000
Amortization of intangible assets		6,118,000	6,334,000	5,464,000
Provision for (benefit from) credit losses on loans		23,990,000	18,470,000	(6,775,000)
Amortization of investment securities premium, net		312,000	6,641,000	6,685,000
Loss on sale of investment securities		284,000	0	0
Originations of loans for resale		(43,313,000)	(71,600,000)	(217,210,000)
Proceeds from sale of loans originated for resale		45,467,000	74,922,000	227,938,000
Gain on sale of loans		(1,166,000)	(2,342,000)	(9,580,000)
Change in market value of mortgage servicing rights		506,000	(301,000)	872,000
Gain on sale of real estate owned, net		(18,000)	(166,000)	0
Deferred income tax expense		(2,399,000)	(8,022,000)	(936,000)
Gain on transfer of loans to real estate owned		(114,000)	(316,000)	(233,000)
Operating lease payments		(6,378,000)	(5,904,000)	(4,964,000)
Loss (gain) on disposal of fixed assets		23,000	(1,070,000)	(439,000)
Increase in cash value of life insurance		(3,150,000)	(2,858,000)	(2,775,000)
Gain on life insurance death benefit		0	(309,000)	(702,000)
(Gain) loss on marketable equity securities		(36,000)	340,000	86,000
Equity compensation vesting expense		4,125,000	3,869,000	2,638,000
Change in value of other real estate		797,000	113,000	9,000
Amortization of operating lease right of use asset		6,364,000	6,033,000	5,452,000
Change in:
Interest receivable		(4,912,000)	(9,170,000)	712,000
Interest payable		7,278,000	(287,000)	(434,000)
Other assets and liabilities, net		(18,647,000)	17,087,000	2,381,000
Net cash from operating activities		138,887,000	162,895,000	132,207,000
Investing activities:
Cash acquired in acquisition; net of consideration paid		0	426,883,000	0
Maturities and principal repayments of securities available for sale		321,738,000	267,830,000	371,632,000
Maturities and principal repayments of securities held to maturity		27,260,000	38,399,000	83,929,000
Proceeds from sale of available for sale securities		71,024,000	0	0
Purchases of securities available for sale		(34,468,000)	(699,035,000)	(1,190,690,000)
Loan origination and principal collections, net		(345,902,000)	(739,037,000)	(45,812,000)
Loans purchased		(6,423,000)	(22,845,000)	(108,433,000)
Proceeds from sale of real estate owned		224,000	873,000	1,526,000
Proceeds from sale of premises and equipment		0	6,690,000	2,743,000
Purchases of premises and equipment		(4,886,000)	(3,623,000)	(3,196,000)
Life insurance proceeds		0	641,000	4,490,000
Net cash from (used in) investing activities		28,567,000	(723,224,000)	(883,811,000)
Financing activities:
Net change in deposits		(494,975,000)	(253,625,000)	861,225,000
Net change in other borrowings		367,977,000	214,518,000	23,173,000
Repurchase of common stock, net		(9,240,000)	(27,148,000)	(4,344,000)
Dividends paid		(39,901,000)	(35,797,000)	(29,724,000)
Exercise of stock options, net		156,000	1,190,000	144,000
Net cash (used in) from financing activities		(175,983,000)	(100,862,000)	850,474,000
Net change in cash and cash equivalents		(8,529,000)	(661,191,000)	98,870,000
Cash and cash equivalents at beginning of year		107,230,000	768,421,000	669,551,000
Cash and cash equivalents at end of year		98,701,000	107,230,000	768,421,000
Supplemental disclosure of cash flow activity:
Cash paid for interest expense		74,399,000	9,290,000	5,942,000
Cash paid for income taxes		45,300,000	41,000,000	46,300,000
Supplemental disclosure of noncash activities:
Unrealized gain (loss) on securities available for sale		58,727,000	(290,157,000)	(19,575,000)
Loans transferred to foreclosed assets		155,000	1,349,000	1,052,000
Market value of shares tendered in-lieu of cash to pay for exercise of options and/or related taxes		2,266,000	2,522,000	2,118,000
Obligations incurred in conjunction with leased assets		4,300,000	6,149,000	2,883,000
Business combination	[1]
[1] (1) In the year ended 2022, the VRB acquisition included fair value tangible assets acquired of $1.37 billion, liabilities assumed of $1.28 billion, resulting in goodwill of $0.09 billion.

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows (Parenthetical) $ in Thousands	Dec. 31, 2022 USD ($)
Goodwill	$ 304,442
VRB Acquisition
Fair value of tangible assets	1,370,000
Fair value of liabilities assumed	1,280,000
Goodwill	$ 90,000

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2023
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies 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 and retail banking business in 31 California counties. 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 obtained through acquisition. 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 and its wholly-owned subsidiary. All inter-company accounts and transactions have been eliminated in consolidation. 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 included in other assets on the consolidated balance sheets. The subordinated debentures issued and guaranteed by the Company and held by the Capital Trusts are reflected as debt on the Company’s consolidated balance sheets. 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. 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. The Company currently classifies all its operation into one business segment that it denotes as community banking. 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. Business Combinations The Company accounts for acquisitions of businesses using the acquisition method of accounting. Under the acquisition method, assets acquired and liabilities assumed are recorded at their estimated fair values at the date of acquisition. Management utilizes various valuation techniques including discounted cash flow analyses to determine these fair values. Any excess of the purchase price over amounts allocated to the acquired assets, including identifiable intangible assets, and liabilities assumed is recorded as goodwill. Cash and Cash Equivalents For purposes of the consolidated statements of cash flows, cash and cash equivalents include cash on hand, amounts due from banks, and federal funds sold. Net cash flows are reported for loan and deposit transactions and other borrowings. Non-Marketable and Other Equity Securities Non-marketable and other equity securities include qualified public welfare investments and venture capital/private equity funds. Our accounting for investments in non-marketable and other equity securities depends on several factors, including the level of ownership, power to control and the legal structure of the subsidiary making the investment. We base our accounting for such securities on: (i) fair value accounting, (ii) measurement alternative for other investments without a readily determinable fair value, and (iii) equity method accounting. During the twelve months ended December 31, 2023 and 2022, the Company recognized an insignificant amount of earnings and losses in the consolidated statements of net income related to changes in the fair value of non-marketable and other equity securities. Debt Securities The Company classifies its debt securities into one of three categories: trading, available for sale or held to maturity. Trading securities are bought and held principally for the purpose of selling in the near term and changes in the value of these securities are recorded through earnings. Held to maturity securities are those securities which the Company has the ability and intent to hold until maturity. These securities are carried at cost adjusted for amortization of premium and accretion of discount, computed by the effective interest method over their contractual lives. All other securities not included in trading or held to maturity are classified as available for sale. AFS securities are recorded at fair value. Unrealized gains and losses, net of the related tax effect, on available for sale securities are reported as a separate component of other accumulated comprehensive income in shareholders’ equity until realized. Discounts are amortized or accreted over the expected life of the related investment security as an adjustment to yield using the effective interest method. Premiums on callable debt securities are generally amortized to the earliest call date of the security with the exception of mortgage backed securities, where estimated prepayments, if any, are considered. Dividend and interest income are recognized when earned. Realized gains and losses are derived from the amortized cost of the security sold. The Company did not have any debt securities classified as trading during the three year period ended December 31, 2023. The Company has made a policy election to exclude accrued interest from the amortized cost basis of debt securities and report accrued interest separately in the consolidated balance sheets. A debt security is placed on nonaccrual status at the time any principal or interest payments become more than 90 days delinquent or if full collection of interest or principal becomes uncertain. Accrued interest for a security placed on nonaccrual is reversed against interest income. There was no accrued interest related to debt securities reversed against interest income for the years ended December 31, 2023, 2022 and 2021. The Company evaluates available for sale 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. No security credit losses were recognized during the years ended December 31, 2023, 2022 or 2021. For HTM debt securities, the Company measures expected credit losses on held-to-maturity debt securities on a collective basis by major security type, then further disaggregated by sector and bond rating. Accrued interest receivable on held-to-maturity (HTM) debt securities is excluded from the estimate of credit losses. The estimate of expected credit losses considers historical credit loss information that is adjusted for current condition 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 HTM 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 during the years ended December 31, 2023, 2022 or 2021. Restricted Equity Securities Restricted equity securities represent the Company’s investment in the stock of the Federal Home Loan Bank of San Francisco (“FHLB”) and are carried at par value, which reasonably approximates its fair value. While technically these are considered equity securities, there is no market for the FHLB stock. Therefore, the shares are considered as restricted investment securities. Management periodically evaluates FHLB stock for other-than-temporary impairment. Management’s determination of whether these investments are impaired is based on its assessment of the ultimate recoverability of cost rather than by recognizing temporary declines in value. The determination of whether a decline affects the ultimate recoverability of cost is influenced by criteria such as (1) the significance of any decline in net assets of the FHLB as compared to the capital stock amount for the FHLB and the length of time this situation has persisted, (2) commitments by the FHLB to make payments required by law or regulation and the level of such payments in relation to the operating performance of the FHLB, (3) the impact of legislative and regulatory changes on institutions and, accordingly, the customer base of the FHLB, and (4) the liquidity position of the FHLB. As a member of the FHLB system, the Bank is required to maintain a minimum level of investment in FHLB stock based on specific percentages of its outstanding mortgages, total assets, or FHLB advances. The Bank may request redemption at par value of any stock in excess of the minimum required investment. Stock redemptions are at the discretion of the FHLB. Both cash and stock dividends are reported as income when received. Loans Held for Sale Loans originated and intended for sale in the secondary market are carried at the lower of aggregate cost or fair value, as determined by aggregate outstanding commitments from investors of current investor yield requirements. Net unrealized losses are recognized through a valuation allowance by charges to non-interest income. Mortgage loans held for sale are generally sold with the mortgage servicing rights retained by the Company. Gains or losses on the sale of loans that are held for sale are recognized at the time of the sale and determined by the difference between net sale proceeds and the net book value of the loans less the estimated fair value of any retained mortgage servicing rights. Loans Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at the principal amount outstanding, net of deferred loan fees and costs. Loan origination and commitment fees and certain direct loan origination costs are deferred, and the net amount is amortized as an adjustment to the related loan’s yield over the actual life of the loan. Loans on which the accrual of interest has been discontinued are designated as nonaccrual loans. 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. 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 Company measures credit losses under ASU 2016-03 Financial Instruments — Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , which replaced the incurred loss methodology, and is referred to as the current expected credit loss (CECL) methodology. The measurement of expected credit losses under the CECL methodology is applicable to financial assets measured at amortized costs, including loan receivables and held-to-maturity debt securities. The allowance for credit losses (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. Management estimates the allowance balance using relevant information, from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. The allowance for credit losses is measured on a collective (pool) basis when similar risk characteristics exist. Historical credit loss experience provides the basis for the estimation of expected credit losses, which captures loan balances as of a point in time to form a cohort, then tracks the respective losses generated by that cohort of loans over the remaining life. The Company identified and accumulated loan cohort historical loss data beginning with the fourth quarter of 2008 and through the current period. In situations where the Company's actual loss history was not statistically relevant, the loss history of peers, defined as financial institutions with assets greater than three billion and less than ten billion, were utilized to create a minimum loss rate. Adjustments to historical loss information are made for differences in relevant current loan-specific risk characteristics, such as historical timing of losses relative to the loan origination. In its loss forecasting framework, the Company incorporates forward-looking information through the use of macroeconomic scenarios applied over the forecasted life of the assets. These macroeconomic scenarios incorporate variables that have historically been key drivers of increases and decreases in credit losses. These variables include, but are not limited to changes in environmental conditions, such as California unemployment rates, household debt levels, and the pace of change in corporate bond yields. The Company also considers macroeconomic forecasts to estimate the ACL. A loan is considered to be collateral dependent when repayment is expected to be provided substantially through the operation or sale of the collateral. The ACL on collateral dependent loans is measured using the fair value of the underlying collateral, adjusted for costs to sell when applicable, less the amortized cost basis of the financial asset. If the value of underlying collateral is determined to be less than the recorded amount of the loan, a charge-off will be taken. PCD assets are assets acquired at a discount that is due, in part, to credit quality deterioration since origination which may be determined through observation of missed payments, downgrade in risk rating, deterioration of a borrower's financial trends or other observable factors including subjectivity utilized by management. PCD assets are initially recorded 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 consolidated balance sheets, while the allowance for acquired non-PCD assets, such as loans, is recorded through the provision for credit losses on the consolidated statements of income, 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. The Company has identified the following portfolio segments to evaluate and measure the allowance for credit loss: Commercial real estate : • Commercial real estate - Non-owner occupied: These commercial properties typically consist of buildings which are leased to others for their use and rely on rents as the primary source of repayment. Property types are predominantly office, retail, or light industrial but the portfolio also has some special use properties. As such, the risk of loss associated with these properties is primarily driven by general economic changes or changes in regional economies and the impact of such on a tenant’s ability to pay. Ultimately this can affect occupancy, rental rates, or both. Additional risk of loss can come from new construction resulting in oversupply, the costs to hold or operate the property, or changes in interest rates. The terms on these loans at origination typically have maturities from five fifteen • Commercial real estate - Owner occupied: These credits are primarily susceptible to changes in the financial condition of the business operated by the property owner. This may be driven by changes in, among other things, industry challenges, factors unique to the operating geography of the borrower, change in the individual fortunes of the business owner, general economic conditions and changes in business cycles. When default is driven by issues related specifically to the business owner, collateral values tend to provide better repayment support and may result in little or no loss. Alternatively, when default is driven more by general economic conditions, the underlying collateral may have devalued more and thus result in larger losses in the event of default. The terms on these loans at origination typically have maturities from five fifteen • Multifamily: These commercial properties are generally comprised of more than four rentable units, such as apartment buildings, with each unit intended to be occupied as the primary residence for one or more persons. Multifamily properties are also subject to changes in general or regional economic conditions, such as unemployment, ultimately resulting in increased vacancy rates or reduced rents or both. In addition, new construction can create an oversupply condition and market competition resulting in increased vacancy, reduced market rents, or both. Due to the nature of their use and the greater likelihood of tenant turnover, the management of these properties is more intensive and therefore is more critical to the preclusion of loss. • Farmland: While the Company has few loans that were originated for the purpose of the acquisition of these commercial properties, loans secured by farmland represent unique risks that are associated with the operation of an agricultural businesses. The valuation of farmland can vary greatly over time based on the property's access to resources including but not limited to water, crop prices, foreign exchange rates, government regulation or restrictions, and the nature of ongoing capital investment needed to maintain the quality of the property. Loans secured by farmland typically represent less risk to the Company than other agriculture loans as the real estate typically provides greater support in the event of default or need for longer term repayment. Consumer loans : • SFR 1-4 1st DT Liens: The most significant drivers of potential loss within the Company's residential real estate portfolio relate general, regional, or individual changes in economic conditions and their effect on employment and borrowers cash flow. Risk in this portfolio is best measured by changes in borrower credit score and loan-to-value. Loss estimates are based on the general movement in credit score, economic outlook and its effects on employment and the value of homes and the Bank’s historical loss experience adjusted to reflect the economic outlook and the unemployment rate. • SFR HELOCs and Junior Liens: Similar to residential real estate term loans, HELOCs and junior liens performance is also primarily driven by borrower cash flows based on employment status. However, HELOCs carry additional risks associated with the fact that most of these loans are secured by a deed of trust in a position that is junior to the primary lien holder. Furthermore, the risk that as the borrower's financial strength deteriorates, the outstanding balance on these credit lines may increase as they may only be canceled by the Company if certain limited criteria are met. In addition to the allowance for credit losses maintained as a percent of the outstanding loan balance, the Company maintains additional reserves for the unfunded portion of the HELOC. • Other: The majority of these consumer loans are secured by automobiles, with the remainder primarily unsecured revolving debt (credit cards). These loans are susceptible to three primary risks; non-payment due to income loss, over-extension of credit and, when the borrower is unable to pay, shortfall in collateral value, if any. Typically, non-payment is due to loss of job and will follow general economic trends in the marketplace driven primarily by rises in the unemployment rate. Loss of collateral value can be due to market demand shifts, damage to collateral itself or a combination of those factors. Credit card loans are unsecured and while collection efforts are pursued in the event of default, there is typically limited opportunity for recovery. Loss estimates are based on the general movement in credit score, economic outlook and its effects on employment and the Bank’s historical loss experience adjusted to reflect the economic outlook and the unemployment rate. Commercial and industrial: • Repayment of these loans is primarily based on the cash flow of the borrower, and secondarily on the underlying collateral provided by the borrower. A borrower's cash flow may be unpredictable, and collateral securing these loans may fluctuate in value. Most often, collateral includes accounts receivable, inventory, or equipment. Collateral securing these loans may depreciate over time, may be difficult to appraise, may be illiquid and may fluctuate in value based on the success of the business. Actual and forecast changes in gross domestic product are believed to be corollary to losses associated with these credits. Construction : • While secured by real estate, construction loans represent a greater level of risk than term real estate loans due to the nature of the additional risks associated with the not only the completion of construction within an estimated time period and budget, but also the need to either sell the building or reach a level of stabilized occupancy sufficient to generate the cash flows necessary to support debt service and operating costs. The Company seeks to mitigate the additional risks associated with construction lending by requiring borrowers to comply with lower loan to value ratios and additional covenants as well as strong tertiary support of guarantors. The loss forecasting model applies the historical rate of loss for similar loans over the expected life of the asset as adjusted for macroeconomic factors. Agriculture production: • Repayment of agricultural loans is dependent upon successful operation of the agricultural business, which is greatly impacted by factors outside the control of the borrower. These factors include adverse weather conditions, including access to water, that may impact crop yields, loss of livestock due to disease or other factors, declines in market prices for agriculture products, changes in foreign exchange, and the impact of government regulations. In addition, many farms are dependent on a limited number of key individuals whose injury or death may significantly affect the successful operation of the business. Consequently, agricultural production loans may involve a greater degree of risk than other types of loans. Leases: • The loss forecasting model applies the historical rate of loss for similar loans over the expected life of the asset. Leases typically represent an elevated level of credit risk as compared to loans secured by real estate as the collateral for leases is often subject to a more rapid rate of depreciation or depletion. The ultimate severity of loss is impacted by the type of collateral securing the exposure, the size of the exposure, the borrower’s industry sector, any guarantors and the geographic market. Assumptions of expected loss are conditioned to the economic outlook and the other variables discussed above. Unfunded commitments : • The estimated credit losses associated with these unfunded lending commitments is calculated using the same models and methodologies noted above and incorporate utilization assumptions at time of default. The reserve for unfunded commitments is maintained on the consolidated balance sheet in other liabilities. Real Estate Owned Real estate owned (REO) includes assets acquired through, or in lieu of, loan foreclosure. REO is held for sale and are initially recorded at fair value less estimated costs to sell at the date of acquisition, establishing a new cost basis. Physical possession of residential real estate property collateralizing a consumer mortgage loan occurs when legal title is obtained upon completion of foreclosure or when the borrower conveys all interest in the property to satisfy the loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Any write-downs based on the asset’s fair value less costs to sell at the date of acquisition are charged to the allowance for loan and lease losses. Any recoveries based on the asset’s fair value less estimated costs to sell in excess of the recorded value of the loan at the date of acquisition are recorded to the allowance for loan and lease losses. These assets are subsequently accounted for at lower of cost or fair value less estimated costs to sell. If fair value declines subsequent to foreclosure, a valuation allowance is recorded through expense. Operating costs after acquisition are expensed. Revenue and expenses from operations and changes in the valuation allowance are included in other non-interest expense, along with the gain or loss on sale of REO. Premises and Equipment Land is carried at cost. Land improvements, buildings and equipment, including those acquired under capital lease, are stated at cost less accumulated depreciation and amortization. Depreciation and amortization expenses are computed using the straight-line method over the shorter of the estimated useful lives of the related assets or lease terms. Asset lives range from 3-10 years for furniture and equipment and 15-40 years for land improvements and buildings. Company Owned Life Insurance The Company has purchased life insurance policies on certain key executives. Company owned life insurance is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other charges or other amounts due that are probable at settlement. As a result of current tax law and the nature of these policies, the Bank records any increase in cash value of these policies as nontaxable non-interest income. If the Bank decided to surrender any of the policies prior to the death of the insured, such surrender may result in a tax expense related to the life-to-date cumulative increase in cash value of the policy. If the Bank retains such policies until the death of the insured, the Bank would receive nontaxable proceeds from the insurance company equal to the death benefit of the policies. The Bank has entered into Joint Beneficiary Agreements (JBAs) with certain of the insured that provide some level of sharing of the death benefit, less the cash surrender value, among the Bank and the beneficiaries of the insured upon the receipt of death benefits. Goodwill, Other Intangible and Long-Lived Assets Goodwill represents the excess of costs over fair value of net assets of businesses acquired from a business combination. The Company has an identifiable intangible asset consisting of core deposit intangibles (“CDI”). CDI are amortized over their respective estimated useful lives and reviewed periodically for impairment. Goodwill and other intangible assets acquired in a business combination and determined to have an indefinite useful life are not amortized, but instead tested for impairment at least annually. Other intangible assets with estimable useful lives are amortized over their respective estimated useful lives to their estimated residual values, and reviewed periodically for impairment. As of September 30 of each year, goodwill is tested for impairment, and is tested for impairment more frequently if events and circumstances indicate that the asset might be impaired. An impairment loss is recognized to the extent that the carrying amount exceeds the asset’s fair value. Long-lived assets, such as premises and equipment, and purchased intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized by the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of would be separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell, and are no longer depreciated. The assets and liabilities of a disposed group classified as held for sale would be present

Business Combinations

Business Combinations	12 Months Ended
	Dec. 31, 2023
Business Combinations [Abstract]
Business Combinations	Business Combinations On March 25, 2022, the Company completed its acquisition of Valley Republic Bancorp (VRB), including the merger of Valley Republic Bank into Tri Counties Bank, with Tri Counties Bank as the surviving entity, in accordance with the terms of the merger agreement dated as of July 27, 2021. The cash and stock transaction was valued at $174.0 million in aggregate, based on TriCo's closing stock price of $42.48 on March 25, 2022. Under the terms of the merger agreement, the Company issued 4,105,518 shares, in addition to approximately $0.4 million in cash paid out for settlement of stock option awards at VRB. The following table summarizes the consideration paid for VRB and the amounts of assets acquired and liabilities assumed that were recorded at the acquisition date (in thousands): Fair Value as of Fair value of consideration transferred: Fair value of shares issued $ 173,585 Cash consideration 431 Total fair value of consideration transferred 174,016 Assets acquired: Cash and cash equivalents 427,314 Securities available for sale 109,716 Loans and leases 771,353 Premises and equipment 4,658 Cash value of life insurance 13,609 Core deposit intangible 10,635 Other assets 29,744 Total assets acquired 1,367,029 Liabilities assumed: Deposits (1,215,479) Subordinated debt (47,236) SERP liability (3,352) Other liabilities (10,516) Total liabilities assumed (1,276,583) Total net assets acquired 90,446 Goodwill recognized $ 83,570

Investment Securities

Investment Securities	12 Months Ended
	Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities The amortized cost and estimated fair values of investment securities classified as available for sale and held to maturity are summarized in the following tables: December 31, 2023 Amortized Gross Gross Estimated (in thousands) Debt Securities Available for Sale Obligations of U.S. government agencies $ 1,386,772 $ 2 $ (165,037) $ 1,221,737 Obligations of states and political subdivisions 262,879 268 (26,772) 236,375 Corporate bonds 6,173 — (571) 5,602 Asset backed securities 359,214 255 (4,188) 355,281 Non-agency collateralized mortgage obligations 369,287 — (35,778) 333,509 Total debt securities available for sale $ 2,384,325 $ 525 $ (232,346) $ 2,152,504 Debt Securities Held to Maturity Obligations of U.S. government agencies $ 130,823 $ — $ (8,331) $ 122,492 Obligations of states and political subdivisions 2,671 6 (43) 2,634 Total debt securities held to maturity $ 133,494 $ 6 $ (8,374) $ 125,126 There was no allowance for credit losses recorded for the held to maturity debt portfolio as of or for the years ended December 31, 2023 and 2022. December 31, 2022 Amortized Gross Gross Estimated (in thousands) Debt Securities Available for Sale Obligations of U.S. government agencies $ 1,568,408 $ 3 $ (195,642) $ 1,372,769 Obligations of states and political subdivisions 332,625 401 (39,821) 293,205 Corporate bonds 6,164 — (413) 5,751 Asset backed securities 454,943 17 (15,193) 439,767 Non-agency collateralized mortgage obligations 380,847 — (39,901) 340,946 Total debt securities available for sale $ 2,742,987 $ 421 $ (290,970) $ 2,452,438 Debt Securities Held to Maturity Obligations of U.S. government agencies $ 154,830 $ 2 $ (11,013) $ 143,819 Obligations of states and political subdivisions 6,153 13 (47) 6,119 Total debt securities held to maturity $ 160,983 $ 15 $ (11,060) $ 149,938 During the year ended December 31, 2023, proceeds from sales of debt securities totaled $71.0 million, resulting in gross losses of $0.3 million. There were no sales of debt securities during the years ended 2022 and 2021, respectively. Investment securities with an aggregate carrying value of $702.2 million and $595.8 million at December 31, 2023 and 2022, respectively, were pledged as collateral for specific borrowings, lines of credit and local agency deposits. The amortized cost and estimated fair value of debt securities at December 31, 2023 by contractual maturity are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. At December 31, 2023, obligations of U.S. government and agencies with an amortized cost basis totaling $1.4 billion consist almost entirely of residential real estate mortgage-backed securities whose contractual maturity, or principal repayment, will follow the repayment of the underlying mortgages. For purposes of the following table, the entire outstanding balance of these mortgage-backed securities issued by U.S. government corporations and agencies is categorized based on final maturity date. At December 31, 2023, the Company estimates the average remaining life of these mortgage-backed securities issued by U.S. government corporations and agencies to be approximately 6.7 years. Average remaining life is defined as the time span after which the principal balance has been reduced by half. December 31, 2023 Available for Sale Held to Maturity (In thousands) Amortized Estimated Amortized Estimated Due in one year $ 83,239 $ 81,775 $ — $ — Due after one year through five years 47,769 44,932 5,829 5,640 Due after five years through ten years 367,733 354,333 89,070 83,726 Due after ten years 1,885,584 1,671,464 38,595 35,760 Totals $ 2,384,325 $ 2,152,504 $ 133,494 $ 125,126 Gross unrealized losses on investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, were as follows: Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized December 31, 2023 (in thousands) Debt Securities Available for Sale Obligations of U.S. government agencies $ 224 $ — $ 1,221,320 $ (165,037) $ 1,221,544 $ (165,037) Obligations of states and political subdivisions 6,229 (75) 216,497 (26,697) 222,726 (26,772) Corporate bonds — — 5,602 (571) 5,602 (571) Asset backed securities 15,928 (93) 264,731 (4,095) 280,659 (4,188) Non-agency collateralized mortgage obligations 44,276 (583) 289,233 (35,195) 333,509 (35,778) Total debt securities available for sale $ 66,657 $ (751) $ 1,997,383 $ (231,595) $ 2,064,040 $ (232,346) Debt Securities Held to Maturity Obligations of U.S. government agencies $ — $ — $ 122,259 $ (8,331) $ 122,259 $ (8,331) Obligations of states and political subdivisions — — 1,012 (43) 1,012 (43) Total debt securities held to maturity $ — $ — $ 123,271 $ (8,374) $ 123,271 $ (8,374) Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized December 31, 2022 (in thousands) Debt Securities Available for Sale Obligations of U.S. government agencies $ 766,612 $ (134,234) $ 605,615 $ (61,408) $ 1,372,227 $ (195,642) Obligations of states and political subdivisions 43,282 (12,917) 219,532 (26,904) 262,814 (39,821) Corporate bonds — — 5,751 (413) 5,751 (413) Asset backed securities 205,329 (10,238) 231,703 (4,955) 437,032 (15,193) Non-agency collateralized mortgage obligations 203,620 (36,480) 123,075 (3,421) 326,695 (39,901) Total securities available for sale $ 1,218,843 $ (193,869) $ 1,185,676 $ (97,101) $ 2,404,519 $ (290,970) Debt Securities Held to Maturity Obligations of U.S. government agencies $ — $ — $ 143,577 $ (11,013) $ 143,577 $ (11,013) Obligations of states and political subdivisions — — 4,530 (47) 4,530 (47) Total debt securities held to maturity $ — $ — $ 148,107 $ (11,060) $ 148,107 $ (11,060) Obligations of U.S. government agencies: Unrealized losses on investments in obligations of U.S. government corporations and agencies are caused by interest rate increases. The contractual cash flows of these securities are guaranteed by U.S. Government Sponsored Entities (principally Fannie Mae and Freddie Mac). It is expected that the securities would not be settled at a price less than the amortized cost of the investment. Because the decline in fair value is attributable to changes in interest rates and not credit quality, and because the Company does not intend to sell and more likely than not will not be required to sell, these investments are not considered other-than-temporarily impaired. At December 31, 2023, 165 debt securities representing obligations of U.S. government corporations and agencies had unrealized losses with aggregate depreciation of 11.90% from the Company’s amortized cost basis. Obligations of states and political subdivisions: The unrealized losses on investments in obligations of states and political subdivisions were caused by increases in required yields by investors in these types of securities. It is expected that the securities would not be settled at a price less than the amortized cost of the investment. Because the decline in fair value is attributable to changes in interest rates and not credit quality, and because the Company does not intend to sell and more likely than not will not be required to sell, these investments are not considered other-than-temporarily impaired. At December 31, 2023, 153 debt security representing obligations of states and political subdivisions had unrealized losses with aggregate depreciation of 10.73% from the Company’s amortized cost basis. Corporate bonds: The unrealized losses on investments in corporate bonds were caused by increases in required yields by investors in these types of securities. It is expected that the securities would not be settled at a price less than the amortized cost of the investment. Because management believes the decline in fair value is attributable to changes in interest rates and not credit quality, and because the Company does not intend to sell and more likely than not will not be required to sell, there is no impairment on these securities and there has been no allowance for credit losses as of and for the year ended December 31, 2023. At December 31, 2023, 6 asset backed securities had unrealized losses with aggregate depreciation of 9.25% from the Company’s amortized cost basis. Asset backed securities: The unrealized losses on investments in asset backed securities were caused by increases in required yields by investors in these types of securities. At the time of purchase, each of these securities were rated AA or AAA and through December 31, 2023 have not experienced any deterioration in credit rating. The Company continues to monitor these securities for changes in credit rating or other indications of credit deterioration. Because management believes the decline in fair value is attributable to changes in interest rates and not credit quality, and because the Company does not intend to sell and more likely than not will not be required to sell, these investments are not considered other-than-temporarily impaired. At December 31, 2023, 35 asset backed securities had unrealized losses with aggregate depreciation of 1.47% from the Company’s amortized cost basis. Non-agency collateralized mortgage obligations: The unrealized losses on investments in asset backed securities were caused by increases in required yields by investors in these types of securities. It is expected that the securities would not be settled at a price less than the amortized cost of the investment. Because management believes the decline in fair value is attributable to changes in interest rates and not credit quality, and because the Company does not intend to sell and more likely than not will not be required to sell, there is no impairment on these securities and there has been no allowance for credit losses as of and for the year ended December 31, 2023. At December 31, 2023, 24 asset backed securities had unrealized losses with aggregate depreciation of 9.69% from the Company’s amortized cost basis. Marketable equity securities: As there were no sales of marketable equity securities, all unrealized gains or losses recognized during the reporting period were for equity securities still held as of the end of the reporting period. The Company monitors credit quality of debt securities held-to-maturity through the use of credit rating. The Company monitors the credit rating on a monthly basis. The following table summarizes the amortized cost of debt securities held-to-maturity at the dates indicated, aggregated by credit quality indicator: December 31, 2023 December 31, 2022 AAA/AA/A BBB/BB/B AAA/AA/A BBB/BB/B (In thousands) (In thousands) Debt Securities Held to Maturity Obligations of U.S. government agencies $ 130,823 $ — $ 154,830 $ — Obligations of states and political subdivisions 2,671 — 6,153 — Total debt securities held to maturity $ 133,494 $ — $ 160,983 $ —

Loans

Loans	12 Months Ended
	Dec. 31, 2023
Receivables [Abstract]
Loans	Loans A summary of loan balances follows: (in thousands) December 31, 2023 December 31, 2022 Commercial real estate: CRE non-owner occupied $ 2,217,806 $ 2,149,725 CRE owner occupied 956,440 984,807 Multifamily 949,502 944,537 Farmland 271,054 280,014 Total commercial real estate loans 4,394,802 4,359,083 Consumer: SFR 1-4 1st DT liens 883,438 790,349 SFR HELOCs and junior liens 356,813 393,666 Other 73,017 56,728 Total consumer loans 1,313,268 1,240,743 Commercial and industrial 586,455 569,921 Construction 347,198 211,560 Agriculture production 144,497 61,414 Leases 8,250 7,726 Total loans, net of deferred loan fees and discounts $ 6,794,470 $ 6,450,447 Total principal balance of loans owed, net of charge-offs $ 6,834,935 $ 6,496,210 Unamortized net deferred loan fees (15,826) (15,275) Discounts to principal balance of loans owed, net of charge-offs (24,639) (30,488) Total loans, net of unamortized deferred loan fees and discounts $ 6,794,470 $ 6,450,447 Allowance for credit losses $ (121,522) $ (105,680) In March 2020, the Small Business Administration ("SBA") Paycheck Protection Program ("PPP") was created to help small businesses keep workers employed during the COVID-19 crisis. As of December 31, 2023 and 2022, the total gross balance outstanding of PPP loans, which are included in commercial and industrial loans above, was $1.1 million and $1.6 million, respectively. During the year ended December 31, 2023, the Company recognized an insignificant amount of fees on PPP loans, as compared with $2.1 million and $14.1 million for the years ended December 31, 2022 and 2021, respectively. The SBA ended PPP and did not accept new borrowing applications, effective May 31, 2021.

Allowance for Credit Losses

Allowance for Credit Losses	12 Months Ended
	Dec. 31, 2023
Allowance For Loan And Lease Losses [Abstract]
Allowance for Credit Losses	Allowance for Credit Losses The ACL was $121.5 million as of December 31, 2023 as compared to $105.7 million at December 31, 2022. The provision for credit losses on loans of $22.5 million during the year ended December 31, 2023 was comprised of $13.5 million in qualitative reserves, $2.4 million in quantitative reserves and $6.6 million in net charge-offs. The quantitative components of the ACL increased reserve requirements due largely to the continued rise in corporate debt yields and increasing uncertainty within global markets. This forecast data continues to evolve and includes improving shifts in the magnitude of changes for both the unemployment and GDP factors leading up to the balance sheet date. Despite continued declines on a year over year comparative basis, core inflation remains elevated from wage pressures, and higher living costs such as housing, energy and food prices resulting from a rising rate environment for nearly all of 2023. Management notes the rapid intervals of rate increases by the Federal Reserve may create repricing risk for certain borrowers and continued inversion of the yield curve, creates informed expectations of the US potentially entering a recession within 12 months. While projected cuts in interest rates from the Federal Reserve during 2024 may improve this outlook, the uncertainty associated with the extent and timing of these potential reductions has inhibited a material benefit to forecasted reserve levels. Furthermore, political uncertainty continues to exist within certain foreign markets that play a critical role within segments of the U.S economy. As a result, management continues to believe that certain credit weaknesses are likely present in the overall economy and that it is appropriate to cautiously maintain a reserve level that incorporates such risk factors. The remaining increase in the allowance for credit reserves related to quantitative metrics was the result of organic loan growth and changes in credit quality associated with levels of classified, past due and non-performing loans in addition to changes in qualitative factors. The table below sets forth the components of the Company’s allowance for credit losses as of the dates indicated: (dollars in thousands) December 31, 2023 December 31, 2022 Allowance for credit losses: Qualitative and forecast factor allowance $ 84,291 $ 70,777 Quantitative (Cohort) model allowance 34,139 32,489 Total allowance for credit losses 118,430 103,266 Allowance for individually evaluated loans 3,092 2,414 Total allowance for credit losses $ 121,522 $ 105,680 The following table provides a summary of loans and leases purchased as part of the VRB acquisition with credit deterioration (PCD) at acquisition: As of March 25, 2022 (in thousands) Commercial Real Estate Consumer Commercial and Industrial Construction Agriculture Production Total Par value $ 27,237 $ 3,877 $ 2,674 $ 25,645 $ 9,080 $ 68,513 ACL at acquisition (1,573) (144) (81) (201) (38) (2,037) Non-credit discount (2,305) (360) (47) (232) (12) (2,956) Purchase price $ 23,359 $ 3,373 $ 2,546 $ 25,212 $ 9,030 $ 63,520 The following tables summarize the activity in the allowance for credit losses, and ending balance of loans, net of unearned fees for the periods indicated. Allowance for Credit Losses – December 31, 2023 (in thousands) Beginning Charge-offs Recoveries Provision for Ending Commercial real estate: CRE non-owner occupied $ 30,962 $ — $ — $ 4,115 $ 35,077 CRE owner occupied 14,014 (3,637) 2 4,702 15,081 Multifamily 13,132 — — 1,286 14,418 Farmland 3,273 — — 1,015 4,288 Total commercial real estate loans 61,381 (3,637) 2 11,118 68,864 Consumer: SFR 1-4 1st DT liens 11,268 — 262 2,479 14,009 SFR HELOCs and junior liens 11,413 (66) 723 (1,797) 10,273 Other 1,958 (558) 190 1,581 3,171 Total consumer loans 24,639 (624) 1,175 2,263 27,453 Commercial and industrial 13,597 (3,879) 316 2,716 12,750 Construction 5,142 — — 3,714 8,856 Agriculture production 906 — 34 2,649 3,589 Leases 15 — — (5) 10 Allowance for credit losses on loans 105,680 (8,140) 1,527 22,455 121,522 Reserve for unfunded commitments 4,315 — — 1,535 5,850 Total $ 109,995 $ (8,140) $ 1,527 $ 23,990 $ 127,372 Allowance for Credit Losses – December 31, 2022 (in thousands) Beginning ACL on PCD Loans Charge-offs Recoveries Provision for Ending Commercial real estate: CRE non-owner occupied $ 25,739 $ 746 $ — $ 1 $ 4,476 $ 30,962 CRE owner occupied 10,691 63 — 2 3,258 14,014 Multifamily 12,395 — — — 737 13,132 Farmland 2,315 764 (294) — 488 3,273 Total commercial real estate loans 51,140 1,573 (294) 3 8,959 61,381 Consumer: SFR 1-4 1st DT liens 10,723 144 — 79 322 11,268 SFR HELOCs and junior liens 10,510 — (22) 429 496 11,413 Other 2,241 — (572) 235 54 1,958 Total consumer loans 23,474 144 (594) 743 872 24,639 Commercial and industrial 3,862 81 (697) 1,157 9,194 13,597 Construction 5,667 201 — — (726) 5,142 Agriculture production 1,215 38 — 4 (351) 906 Leases 18 — — — (3) 15 Allowance for credit losses on loans 85,376 2,037 (1,585) 1,907 17,945 105,680 Reserve for unfunded commitments 3,790 — — — 525 4,315 Total $ 89,166 $ 2,037 $ (1,585) $ 1,907 $ 18,470 $ 109,995 Allowance for Credit Losses – December 31, 2021 (in thousands) Beginning Charge-offs Recoveries Provision for Ending Commercial real estate: CRE non-owner occupied $ 29,380 $ — $ 12 $ (3,653) $ 25,739 CRE owner occupied 10,861 (18) 794 (946) 10,691 Multifamily 11,472 — — 923 12,395 Farmland 1,980 (126) — 461 2,315 Total commercial real estate loans 53,693 (144) 806 (3,215) 51,140 Consumer: SFR 1-4 1st DT liens 10,117 (145) 13 738 10,723 SFR HELOCs and junior liens 11,771 (29) 1,127 (2,359) 10,510 Other 3,260 (577) 361 (803) 2,241 Total consumer loans 25,148 (751) 1,501 (2,424) 23,474 Commercial and industrial 4,252 (1,470) 755 325 3,862 Construction 7,540 (27) — (1,846) 5,667 Agriculture production 1,209 — 24 (18) 1,215 Leases 5 — — 13 18 Allowance for credit losses on loans 91,847 (2,392) 3,086 (7,165) 85,376 Reserve for unfunded commitments 3,400 — — 390 3,790 Total $ 95,247 $ (2,392) $ 3,086 $ (6,775) $ 89,166 As part of the on-going monitoring of the credit quality of the Company’s loan portfolio, management tracks certain credit quality indicators including, but not limited to, trends relating to (i) the level of criticized and classified loans, (ii) net charge-offs, (iii) non-performing loans, and (iv) delinquency within the portfolio. The Company analyzes loans individually to classify the loans as to credit risk and grading. This analysis is performed annually for all outstanding balances greater than $1.0 million and non-homogeneous loans, such as commercial real estate loans, unless other indicators, such as delinquency, trigger more frequent evaluation. Loans below the $1.0 million threshold and homogenous in nature are evaluated as needed for proper grading based on delinquency and borrower credit scores. Collateral values may be determined by appraisals obtained through Bank approved, licensed appraisers, qualified independent third parties, public value information (blue book values for autos), sales invoices, or other appropriate means. Appropriate valuations are obtained at initiation of the credit and periodically (every 3-12 months depending on collateral type) once repayment is questionable and the loan has been classified. The Company utilizes a risk grading system to assign a risk grade to each of its loans. Loans are graded on a scale ranging from Pass to Loss. A description of the general characteristics of the risk grades is as follows: • Pass – This grade represents loans ranging from acceptable to very little or no credit risk. These loans typically meet most if not all policy standards in regard to: loan amount as a percentage of collateral value, debt service coverage, profitability, leverage, and working capital. • Special Mention – This grade represents “Other Assets Especially Mentioned” in accordance with regulatory guidelines and includes loans that display some potential weaknesses which, if left unaddressed, may result in deterioration of the repayment prospects for the asset or may inadequately protect the Company’s position in the future. These loans warrant more than normal supervision and attention. • Substandard – This grade represents “Substandard” loans in accordance with regulatory guidelines. Loans within this rating typically exhibit weaknesses that are well defined to the point that repayment is jeopardized. Loss potential is, however, not necessarily evident. The underlying collateral supporting the credit appears to have sufficient value to protect the Company from loss of principal and accrued interest, or the loan has been written down to the point where this is true. There is a definite need for a well-defined workout/rehabilitation program. • Doubtful – This grade represents “Doubtful” loans in accordance with regulatory guidelines. An asset classified as Doubtful has all the weaknesses inherent in a loan classified Substandard with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. Pending factors include proposed merger, acquisition, or liquidation procedures, capital injection, perfecting liens on additional collateral, and financing plans. • Loss – This grade represents “Loss” loans in accordance with regulatory guidelines. A loan classified as Loss is considered uncollectible and of such little value that its continuance as a bankable asset is not warranted. This classification does not mean that the loan has absolutely no recovery or salvage value, but rather that it is not practical or desirable to defer writing off the loan, even though some recovery may be affected in the future. The portion of the loan that is graded loss should be charged off no later than the end of the quarter in which the loss is identified. The following tables present ending loan balances by loan category and risk grade for the periods indicated: Term Loans Amortized Cost Basis by Origination Year - As of December 31, 2023 (in thousands) 2023 2022 2021 2020 2019 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Commercial real estate: CRE non-owner occupied risk ratings Pass $ 180,326 $ 413,863 $ 290,210 $ 137,656 $ 206,408 $ 792,875 $ 141,686 $ — $ 2,163,024 Special Mention — 1,329 — 5,281 17,093 14,174 1,247 — 39,124 Substandard — — 767 — 2,139 12,540 212 — 15,658 Doubtful/Loss — — — — — — — — — Total CRE non-owner occupied risk ratings $ 180,326 $ 415,192 $ 290,977 $ 142,937 $ 225,640 $ 819,589 $ 143,145 $ — $ 2,217,806 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Commercial real estate: CRE owner occupied risk ratings Pass $ 71,288 $ 196,915 $ 190,384 $ 118,457 $ 59,220 $ 268,990 $ 23,740 $ — $ 928,994 Special Mention — 5,773 1,513 2,754 703 2,678 — — 13,421 Substandard — 2,972 7,835 — 111 3,107 — — 14,025 Doubtful/Loss — — — — — — — — — Total CRE owner occupied risk ratings $ 71,288 $ 205,660 $ 199,732 $ 121,211 $ 60,034 $ 274,775 $ 23,740 $ — $ 956,440 Current period gross charge-offs $ — $ — $ — $ 1,380 $ — $ 2,228 $ 29 $ — $ 3,637 Term Loans Amortized Cost Basis by Origination Year - As of December 31, 2023 (in thousands) 2023 2022 2021 2020 2019 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Commercial real estate: Multifamily risk ratings Pass $ 28,445 $ 177,032 $ 279,660 $ 89,106 $ 104,108 $ 225,446 $ 33,470 $ — $ 937,267 Special Mention — — 11,914 — — 321 — — 12,235 Substandard — — — — — — — — — Doubtful/Loss — — — — — — — — — Total multifamily loans $ 28,445 $ 177,032 $ 291,574 $ 89,106 $ 104,108 $ 225,767 $ 33,470 $ — $ 949,502 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Commercial real estate: Farmland risk ratings Pass $ 21,729 $ 46,398 $ 37,134 $ 16,006 $ 16,780 $ 41,663 $ 50,857 $ — $ 230,567 Special Mention — 2,170 5,802 51 261 734 — — 9,018 Substandard 101 813 9,053 377 — 13,266 7,859 — 31,469 Doubtful/Loss — — — — — — — — — Total farmland loans $ 21,830 $ 49,381 $ 51,989 $ 16,434 $ 17,041 $ 55,663 $ 58,716 $ — $ 271,054 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Consumer loans: SFR 1-4 1st DT liens risk ratings Pass $ 135,741 $ 189,920 $ 260,870 $ 125,081 $ 29,568 $ 126,975 $ — $ 4,079 $ 872,234 Special Mention 71 — — — — 1,948 — 27 2,046 Substandard — 140 1,296 1,490 531 5,265 — 436 9,158 Doubtful/Loss — — — — — — — — — Total SFR 1st DT liens $ 135,812 $ 190,060 $ 262,166 $ 126,571 $ 30,099 $ 134,188 $ — $ 4,542 $ 883,438 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Consumer loans: SFR HELOCs and Junior Liens risk ratings Pass $ 297 $ — $ — $ — $ — $ 96 $ 343,698 $ 6,444 $ 350,535 Special Mention — — — — — — 2,274 138 2,412 Substandard — — — — — — 3,212 654 3,866 Doubtful/Loss — — — — — — — — — Total SFR HELOCs and Junior Liens $ 297 $ — $ — $ — $ — $ 96 $ 349,184 $ 7,236 $ 356,813 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ 66 $ 66 Consumer loans: Other risk ratings Pass $ 34,441 $ 9,061 $ 8,908 $ 7,419 $ 6,825 $ 4,619 $ 659 $ — $ 71,932 Special Mention 21 54 203 63 54 37 18 — 450 Substandard 87 183 164 30 116 52 3 — 635 Doubtful/Loss — — — — — — — — — Total other consumer loans $ 34,549 $ 9,298 $ 9,275 $ 7,512 $ 6,995 $ 4,708 $ 680 $ — $ 73,017 Current period gross charge-offs $ 376 $ 82 $ — $ 36 $ 39 $ 9 $ 16 $ — $ 558 Term Loans Amortized Cost Basis by Origination Year - As of December 31, 2023 (in thousands) 2023 2022 2021 2020 2019 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Commercial and industrial loans: Commercial and industrial risk ratings Pass $ 70,930 $ 83,184 $ 51,455 $ 9,504 $ 10,193 $ 7,636 $ 340,858 $ 318 $ 574,078 Special Mention 33 663 237 83 — 178 1,126 — 2,320 Substandard — 2,014 782 103 4 762 6,318 74 10,057 Doubtful/Loss — — — — — — — — Total commercial and industrial loans $ 70,963 $ 85,861 $ 52,474 $ 9,690 $ 10,197 $ 8,576 $ 348,302 $ 392 $ 586,455 Current period gross charge-offs $ 153 $ 287 $ 240 $ 2,285 $ — $ — $ 896 $ 18 $ 3,879 Construction loans: Construction risk ratings Pass $ 56,378 $ 136,294 $ 85,144 $ 47,632 $ 4,583 $ 6,518 $ — $ — $ 336,549 Special Mention — 10,582 — — — — — — 10,582 Substandard — — — — 67 — — — 67 Doubtful/Loss — — — — — — — — — Total construction loans $ 56,378 $ 146,876 $ 85,144 $ 47,632 $ 4,650 $ 6,518 $ — $ — $ 347,198 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Agriculture production loans: Agriculture production risk ratings Pass $ 945 $ 2,749 $ 1,595 $ 396 $ 620 $ 8,491 $ 114,935 $ — $ 129,731 Special Mention — 183 543 176 — — 11,302 — 12,204 Substandard — — — — — — 2,562 — 2,562 Doubtful/Loss — — — — — — — — — Total agriculture production loans $ 945 $ 2,932 $ 2,138 $ 572 $ 620 $ 8,491 $ 128,799 $ — $ 144,497 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Leases: Lease risk ratings Pass $ 8,250 $ — $ — $ — $ — $ — $ — $ — $ 8,250 Special Mention — Substandard — Doubtful/Loss — Total leases $ 8,250 $ — $ — $ — $ — $ — $ — $ — $ 8,250 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Total loans outstanding: Risk ratings Pass $ 608,770 $ 1,255,416 $ 1,205,360 $ 551,257 $ 438,305 $ 1,483,309 $ 1,049,903 $ 10,841 $ 6,603,161 Special Mention 125 20,754 20,212 8,408 18,111 20,070 15,967 165 103,812 Substandard 188 6,122 19,897 2,000 2,968 34,992 20,166 1,164 87,497 Doubtful/Loss — — — — — — — — — Total loans outstanding $ 609,083 $ 1,282,292 $ 1,245,469 $ 561,665 $ 459,384 $ 1,538,371 $ 1,086,036 $ 12,170 $ 6,794,470 Current period gross charge-offs $ 529 $ 369 $ 240 $ 3,701 $ 39 $ 2,237 $ 941 $ 84 $ 8,140 Term Loans Amortized Cost Basis by Origination Year – As of December 31, 2022 (in thousands) 2022 2021 2020 2019 2016 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Commercial real estate: CRE non-owner occupied risk ratings Pass $ 399,910 $ 304,636 $ 152,960 $ 221,659 $ 147,842 $ 748,994 $ 123,794 $ — $ 2,099,795 Special Mention — — — 20,033 — 21,681 1,346 — 43,060 Substandard — 864 768 — 1,059 4,179 — — 6,870 Doubtful/Loss — — — — — — — — — Total CRE non-owner occupied risk ratings $ 399,910 $ 305,500 $ 153,728 $ 241,692 $ 148,901 $ 774,854 $ 125,140 $ — $ 2,149,725 Commercial real estate: CRE owner occupied risk ratings Pass $ 210,101 $ 197,787 $ 120,929 $ 64,244 $ 49,755 $ 251,137 $ 43,343 $ — $ 937,296 Special Mention 131 16,296 234 731 — 6,971 879 — 25,242 Substandard 3,213 — 5,249 1,893 1,103 10,654 157 — 22,269 Doubtful/Loss — Total CRE owner occupied risk ratings $ 213,445 $ 214,083 $ 126,412 $ 66,868 $ 50,858 $ 268,762 $ 44,379 $ — $ 984,807 Commercial real estate: Multifamily risk ratings Pass $ 159,318 $ 290,170 $ 96,937 $ 108,586 $ 106,287 $ 154,125 $ 28,989 $ — $ 944,412 Special Mention — — — — — — — — — Substandard — — — — — 125 — — 125 Doubtful/Loss — — — — — — — — — Total multifamily loans $ 159,318 $ 290,170 $ 96,937 $ 108,586 $ 106,287 $ 154,250 $ 28,989 $ — $ 944,537 Commercial real estate: Farmland risk ratings Pass $ 47,067 $ 53,275 $ 16,739 $ 18,589 $ 12,386 $ 34,528 $ 53,684 $ — $ 236,268 Special Mention 3,139 783 246 5,000 — 3,991 14,275 — 27,434 Substandard — — 1,772 765 3,158 7,094 3,523 — 16,312 Doubtful/Loss — Total farmland loans $ 50,206 $ 54,058 $ 18,757 $ 24,354 $ 15,544 $ 45,613 $ 71,482 $ — $ 280,014 Consumer loans: SFR 1-4 1st DT liens risk ratings Pass $ 194,933 $ 265,370 $ 131,922 $ 33,395 $ 28,545 $ 115,469 $ 8 $ 2,924 $ 772,566 Special Mention — — 1,531 282 3,277 5,854 — 465 11,409 Substandard — 1,204 — — 1,004 3,521 — 645 6,374 Doubtful/Loss — — — — — — — — — Total SFR 1st DT liens $ 194,933 $ 266,574 $ 133,453 $ 33,677 $ 32,826 $ 124,844 $ 8 $ 4,034 $ 790,349 Term Loans Amortized Cost Basis by Origination Year – As of December 31, 2022 (in thousands) 2022 2021 2020 2019 2016 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Consumer loans: SFR HELOCs and Junior Liens risk ratings Pass $ 505 $ — $ — $ — $ — $ 127 $ 378,939 $ 8,462 $ 388,033 Special Mention — — — — — — 1,842 81 1,923 Substandard — — — — — — 3,072 638 3,710 Doubtful/Loss — — — — — — — — — Total SFR HELOCs and Junior Liens $ 505 $ — $ — $ — $ — $ 127 $ 383,853 $ 9,181 $ 393,666 Consumer loans: Other risk ratings Pass $ 14,070 $ 12,990 $ 10,211 $ 10,650 $ 5,225 $ 1,945 $ 899 $ — $ 55,990 Special Mention — 18 77 135 176 32 47 — 485 Substandard — — 42 92 — 96 23 — 253 Doubtful/Loss — — — — — — — — — Total other consumer loans $ 14,070 $ 13,008 $ 10,330 $ 10,877 $ 5,401 $ 2,073 $ 969 $ — $ 56,728 Commercial and industrial loans: Commercial and industrial risk ratings Pass $ 125,710 $ 64,966 $ 17,746 $ 23,131 $ 7,628 $ 5,051 $ 297,341 $ 483 $ 542,056 Special Mention 3,032 139 21 49 138 768 11,547 — 15,694 Substandard 1,293 1,142 5,179 14 33 611 3,798 101 12,171 Doubtful/Loss — Total commercial and industrial loans $ 130,035 $ 66,247 $ 22,946 $ 23,194 $ 7,799 $ 6,430 $ 312,686 $ 584 $ 569,921 Construction loans: Construction risk ratings Pass $ 72,840 $ 72,308 $ 43,409 $ 15,358 $ 2,159 $ 4,900 $ — $ — $ 210,974 Special Mention — — — — — — — — — Substandard — — — 457 — 129 — — 586 Doubtful/Loss — — — — — — — — — Total construction loans $ 72,840 $ 72,308 $ 43,409 $ 15,815 $ 2,159 $ 5,029 $ — $ — $ 211,560 Agriculture production loans: Agriculture production risk ratings Pass $ 3,414 $ 2,777 $ 1,149 $ 1,104 $ 8,902 $ 1,058 $ 38,425 $ — $ 56,829 Special Mention — — — — 90 31 1,632 — 1,753 Substandard — — — — — — 2,832 — 2,832 Doubtful/Loss — — — — — — — — — Total agriculture production loans $ 3,414 $ 2,777 $ 1,149 $ 1,104 $ 8,992 $ 1,089 $ 42,889 $ — $ 61,414 Term Loans Amortized Cost Basis by Origination Year – As of December 31, 2022 (in thousands) 2022 2021 2020 2019 2016 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Leases: Lease risk ratings Pass $ 7,726 $ — $ — $ — $ — $ — $ — $ — $ 7,726 Special Mention — — — — — — — — — Substandard — — — — — — — — — Doubtful/Loss — — — — — — — — — Total leases $ 7,726 $ — $ — $ — $ — $ — $ — $ — $ 7,726 Total loans outstanding: Risk ratings Pass $ 1,235,594 $ 1,264,279 $ 592,002 $ 496,716 $ 368,729 $ 1,317,334 $ 965,422 $ 11,869 $ 6,251,945 Special Mention 6,302 17,236 2,109 26,230 3,681 39,328 31,568 546 127,000 Substandard 4,506 3,210 13,010 3,221 6,357 26,409 13,405 1,384 71,502 Doubtful/Loss — — — — — — — — — Total loans outstanding $ 1,246,402 $ 1,284,725 $ 607,121 $ 526,167 $ 378,767 $ 1,383,071 $ 1,010,395 $ 13,799 $ 6,450,447 Once a loan becomes delinquent and repayment becomes questionable, a Bank collection officer will address collateral shortfalls with the borrower and attempt to obtain additional collateral. If this is not forthcoming and payment in full is unlikely, the Bank will estimate its probable loss, using a recent valuation as appropriate to the underlying collateral less estimated costs of sale, and charge the loan down to the estimated net realizable amount. Depending on the length of time until ultimate collection, the Bank may revalue the underlying collateral and take additional charge-offs as warranted. Revaluations may occur as often as every 3-12 months depending on the underlying collateral and volatility of values. Final charge-offs or recoveries are taken when collateral is liquidated and actual loss is known. Unpaid balances on loans after or during collection and liquidation may also be pursued through lawsuit and attachment of wages or judgment liens on borrower’s other assets. The following table shows the ending balance of current and past due originated loans by loan category as of the date indicated: Analysis of Past Due Loans - As of December 31, 2023 (in thousands) 30-59 days 60-89 days > 90 days Total Past Current Total Commercial real estate: CRE non-owner occupied $ 3,876 $ — $ 1,382 $ 5,258 $ 2,212,548 $ 2,217,806 CRE owner occupied 34 — 247 281 956,159 956,440 Multifamily — — — — 949,502 949,502 Farmland 635 3,798 2,052 6,485 264,569 271,054 Total commercial real estate loans 4,545 3,798 3,681 12,024 4,382,778 4,394,802 Consumer: SFR 1-4 1st DT liens 141 1,449 490 2,080 881,358 883,438 SFR HELOCs and junior liens 16 — 623 639 356,174 356,813 Other 148 40 30 218 72,799 73,017 Total consumer loans 305 1,489 1,143 2,937 1,310,331 1,313,268 Commercial and industrial 244 605 1,654 2,503 583,952 586,455 Construction — — — — 347,198 347,198 Agriculture production 593 878 33 1,504 142,993 144,497 Leases 447 — — 447 7,803 8,250 Total $ 6,134 $ 6,770 $ 6,511 $ 19,415 $ 6,775,055 $ 6,794,470 The following table shows the ending balance of current and past due originated loans by loan category as of the date indicated: Analysis of Past Due Loans - As of December 31, 2022 (in thousands) 30-59 days 60-89 days > 90 days Total Past Current Total Commercial real estate: CRE non-owner occupied $ — $ — $ — $ — $ 2,149,725 $ 2,149,725 CRE owner occupied — 98 75 173 984,634 984,807 Multifamily 159 — — 159 944,378 944,537 Farmland — — — — 280,014 280,014 Total commercial real estate loans 159 98 75 332 4,358,751 4,359,083 Consumer: SFR 1-4 1st DT liens 24 — 279 303 790,046 790,349 SFR HELOCs and junior liens 172 166 707 1,045 392,621 393,666 Other 26 34 55 115 56,613 56,728 Total consumer loans 222 200 1,041 1,463 1,239,280 1,240,743 Commercial and industrial 2,300 190 283 2,773 567,148 569,921 Construction — — 379 379 211,181 211,560 Agriculture production — — — — 61,414 61,414 Leases — — — — 7,726 7,726 Total $ 2,681 $ 488 $ 1,778 $ 4,947 $ 6,445,500 $ 6,450,447 The following table shows the ending balance of non accrual loans by loan category as of the date indicated: Non Accrual Loans As of December 31, 2023 As of December 31, 2022 (in thousands) Non accrual with no allowance for credit losses Total non accrual Past due 90 days or more and still accruing Non accrual with no allowance for credit losses Total non accrual Past due 90 days or more and still accruing Commercial real estate: CRE non-owner occupied $ 2,024 $ 2,024 $ — $ 1,739 $ 1,739 $ — CRE owner occupied 3,994 3,994 — 4,938 4,938 — Multifamily — — — 125 125 — Farmland 5,996 14,484 — 1,772 1,772 — Total commercial real estate loans 12,014 20,502 — 8,574 8,574 — Consumer: SFR 1-4 1st DT liens 2,808 2,811 — 4,117 4,220 — SFR HELOCs and junior liens 3,281 3,571 — 2,498 3,155 — Other 39 105 — 47 84 — Total consumer loans 6,128 6,487 — 6,662 7,459 — Commercial and industrial 1,379 2,503 10 1,224 3,518 — Construction 67 67 — 491 491 — Agriculture production — 2,322 — 1,279 1,279 — Leases — — — — — — Sub-total 19,588 31,881 10 18,230 21,321 — Less: Guaranteed loans (766) (878) — (105) (225) — Total, net $ 18,822 $ 31,003 $ 10 $ 18,125 $ 21,096 $ — The following tables present the amortized cost basis of collateral dependent loans by class of loans as of the following periods: As of December 31, 2023 (in thousands) Retail Office Warehouse Other Multifamily Farmland SFR -1st Deed SFR -2nd Deed Automobile/Truck A/R and Inventory Equipment Total Commercial real estate: CRE non-owner occupied $ 124 $ 615 $ 519 $ 766 $ — $ — $ — $ — $ — $ — $ — $ 2,024 CRE owner occupied 614 — 297 3,083 — — — — — — — 3,994 Multifamily — — — — — — — — — — — — Farmland — — — 635 — 13,849 — — — — — 14,484 Total commercial real estate loans 738 615 816 4,484 — 13,849 — — — — 20,502 Consumer: SFR 1-4 1st DT liens — — — — — — 2,808 — — — — 2,808 SFR HELOCs and junior liens — — — — — — 1,816 1,467 — — — 3,283 Other — — — — — — — — 95 — — 95 Total consumer loans — — — — — — 4,624 1,467 95 — — 6,186 Commercial and industrial — — — — — — — — — 1,712 791 2,503 Construction — — — — — — 67 — — — — 67 Agriculture production — — — 2,288 — — — — — — 33 2,321 Leases — — — — — — — — — — — — Total $ 738 $ 615 $ 816 $ 6,772 $ — $ 13,849 $ 4,691 $ 1,467 $ 95 $ 1,712 $ 824 $ 31,579 As of December 31, 2022 (in thousands) Retail Office Warehouse Other Multifamily Farmland SFR -1st Deed SFR -2nd Deed Automobile/Truck A/R and Inventory Equipment Total Commercial real estate: CRE non-owner occupied $ 777 $ 98 $ — $ 864 $ — $ — $ — $ — $ — $ — $ — $ 1,739 CRE owner occupied 548 75 1,103 3,212 — — — — — — — 4,938 Multifamily — — — — 125 — — — — — — 125 Farmland — — — — — 1,772 — — — — — 1,772 Total commercial real estate loans 1,325 173 1,103 4,076 125 1,772 — — — — — 8,574 Consumer: SFR 1-4 1st DT liens — — — — — — 4,220 — — — — 4,220 SFR HELOCs and junior liens — — — — — — 1,664 1,121 — — — 2,785 Other — — — 5 — — — — 61 — 2 68 Total consumer loans — — — 5 — — 5,884 1,121 61 — 2 7,073 Commercial and industrial — — — 1,874 — — — — — 1,596 48 3,518 Construction — — — 379 — — 112 — — — — 491 Agriculture production — — — — — — — — — — 1,279 1,279 Leases — — — — — — — — — — Total $ 1,325 $ 173 $ 1,103 $ 6,334 $ 125 $ 1,772 $ 5,996 $ 1,121 $ 61 $ 1,596 $ 1,329 $ 20,935 For the twelve months ended December 31, 2023 (in thousands) Principal Forgiveness Payment Delay /Term Extension Combination - Term Change / Available Credit Reduction Combination - Payment Delay /Term Reduction Total % of Loans Outstanding Commercial real estate: Farmland $ — $ — $ — $ 1,430 0.53 % Commercial and industrial — 152 60 — 0.08 % Total $ — $ 152 $ 60 $ 1,430 0.61 % The following table presents the financial effect of loan modifications made to borrowers experiencing financial difficulty during the twelve months ended December 31, 2023. Twelve Months Ended Modification Type Loan Type Financial Effect Payment Delay / Extension Commercial and industrial Added 12 months to the life of the loan, which reduced the payment owed by the borrowers Payment Delay / Extension Commercial and industrial Changed loan terms from fully amortizing to interest-only with balloon, which reduced the payment owed by the borrowers Combination - Payment Delay / Term Reduction Farmland Changed loan terms from fully amortizing to interest-only with balloon, and reduced the loan maturity by 12 months, which reduced the loan payment owed by the borrowers Combination - Term Change / Available Credit Reduction Commercial and industrial Added 60 months to the life of the loan to avoid balloon repayment and reduced available credit by $11000 There were no loans with payment defaults by borrowers experiencing financial difficulty during the quarter ended December 31, 2023 which had material modifications in rate, term or principal forgiveness during the twelve months prior to default.

Real Estate Owned

Real Estate Owned	12 Months Ended
	Dec. 31, 2023
Repossessed Assets [Abstract]
Real Estate Owned	Real Estate Owned A summary of the activity in the balance of real estate owned follows: Year ended December 31, (in thousands) 2023 2022 Beginning balance, net $ 3,439 $ 2,594 Additions/transfers from loans 155 1,349 Dispositions/sales (206) (707) Valuation adjustments (683) 203 Ending balance, net $ 2,705 $ 3,439 Ending valuation allowance $ (739) $ (113) Ending number of foreclosed assets 9 9 Proceeds from sale of real estate owned $ 224 $ 873 Gain on sale of real estate owned $ 19 $ 166

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2023
Property, Plant and Equipment [Abstract]
Premises and Equipment	Premises and Equipment As of December 31, (in thousands) 2023 2022 Land and land improvements $ 26,032 $ 25,899 Buildings 65,467 64,018 Furniture and equipment 43,984 42,850 135,483 132,767 Less: Accumulated depreciation (65,154) (61,657) 70,329 71,110 Construction in progress 1,018 1,217 Total premises and equipment $ 71,347 $ 72,327 Depreciation expense for premises and equipment amounted to $5.8 million, $5.7 million, and $5.9 million during the years ended 2023, 2022, and 2021, respectively.

Cash Value of Life Insurance

Cash Value of Life Insurance	12 Months Ended
	Dec. 31, 2023
Cash Value of Life Insurance [Abstract]
Cash Value of Life Insurance	Cash Value of Life Insurance A summary of the activity in the balance of cash value of life insurance follows: Year ended December 31, (in thousands) 2023 2022 Beginning balance $ 133,742 $ 117,857 Acquired policies from business combination — 13,609 Increase in cash value of life insurance 3,150 2,858 Gain on death benefit — 309 Insurance proceeds receivable reclassified to other assets — (891) Ending balance $ 136,892 $ 133,742 End of period death benefit $ 224,021 $ 223,427 Number of policies owned 216 216 Insurance companies used 14 14 Current and former employees and directors covered 79 79

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets The following table summarizes the Company’s goodwill intangible as of the dates indicated: (in thousands) December 31, Additions Reductions December 31, Goodwill $ 304,442 $ — $ — $ 304,442 Impairment exists when a Company’s carrying value exceeds its fair value. Goodwill is evaluated for impairment annually. At September 30, 2023, the Company had positive equity and the Company elected to perform a qualitative assessment to determine if it was more likely than not that the fair value of the Company exceeded its carrying value, including goodwill. The qualitative assessment indicated that it was more likely than not that the fair value of the reporting unit exceeds its carrying value, resulting in no impairment. For each of the years in the three year period ended December 31, 2023, there were no impairment charges recognized. The following table summarizes the Company’s core deposit intangibles (“CDI”) as of the dates indicated: (in thousands) December 31, December 31, Core deposit intangibles, gross $ 38,826 $ 36,265 Fully amortized portion (2,046) (8,074) Acquisition of VRB — 10,635 Core deposit intangibles, gross ending balance 36,780 38,826 Accumulated amortization, gross (22,156) (23,896) Fully amortized portion 2,046 8,074 Amortization expense (6,118) (6,334) Accumulated amortization, gross ending balance (26,228) (22,156) Core deposit intangible, net $ 10,552 $ 16,670 The Company's remaining net CDI balance of $10.6 million as of December 31, 2023 reflects gross balances recorded from the VRB acquisition on March 25, 2022 totaling $10.6 million and the FNBB acquisition on July 6, 2018 totaling $2.0 million. The following table summarizes the Company’s estimated core deposit intangible amortization (dollars in thousands): Years Ended Estimated CDI Amortization 2024 $ 4,120 2025 1,961 2026 1,527 2027 1,008 2028 797 Thereafter 1,139 $ 10,552

Mortgage Servicing Rights

Mortgage Servicing Rights	12 Months Ended
	Dec. 31, 2023
Mortgage Servicing Right [Abstract]
Mortgage Servicing Rights	Mortgage Servicing Rights The following tables summarize the activity in, and the main assumptions used to determine the fair value of mortgage servicing rights for the periods indicated (dollars in thousands): (in thousands) Year ended December 31, 2023 2022 2021 Balance at beginning of period $ 6,712 $ 5,874 $ 5,092 Additions 400 537 1,654 Change in fair value (506) 301 (872) Balance at end of period $ 6,606 $ 6,712 $ 5,874 Contractually specified servicing fees, late fees and ancillary fees earned $ 1,808 $ 1,887 $ 1,881 Balance of loans serviced at: Beginning of period $ 739,919 $ 770,299 $ 779,530 End of period $ 714,801 $ 739,919 $ 770,299 Period end: Weighted-average prepayment speed (CPR) 116.0 % 127.0 % 208.0 % Weighted-average expected life (years) 7.8 7.6 5.7 Weighted-average discount rate 12.0 % 12.0 % 12.0 % The changes in fair value of MSRs during 2023 were primarily due to changes in mortgage prepayment speeds and changes in principal balances of the underlying mortgages. The changes in fair value of MSRs during 2022 were primarily due to changes in principal balance and mortgage prepayment speeds of the MSRs. The changes in fair value of MSRs during 2021 were primarily due to changes in investor require rate of return, or discount rate, of the MSRs.

Leases

Leases	12 Months Ended
	Dec. 31, 2023
Leases [Abstract]
Leases	Leases The following table presents the components of lease expense for the periods indicated: Year ended December 31, (in thousands) 2023 2022 Operating lease cost $ 5,997 $ 5,725 Short-term lease cost 329 283 Variable lease cost 38 26 Sublease income — — Total lease cost $ 6,364 $ 6,034 The following table presents supplemental cash flow information related to leases as of the periods ended: Year ended December 31, (in thousands) 2023 2022 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows for operating leases $ 6,378 $ 5,904 ROUA obtained in exchange for operating lease liabilities $ 4,300 $ 6,149 The following table presents the weighted average operating lease term and discount rate as of the periods ended: Year ended December 31, 2023 2022 Weighted-average remaining lease term 7.9 years 8.3 years Weighted-average discount rate 3.3 % 3.0 % At December 31, 2023, future expected operating lease payments are as follows (in thousands): Periods ending December 31, 2024 $ 5,755 2025 5,186 2026 4,642 2027 3,951 2028 2,891 Thereafter 10,104 32,529 Discount for present value of expected cash flows (4,268) Lease liability at December 31, 2023 $ 28,261

Deposits

Deposits	12 Months Ended
	Dec. 31, 2023
Deposits [Abstract]
Deposits	Deposits A summary of the balances of deposits follows: (in thousands) December 31, 2023 2022 Noninterest-bearing demand $ 2,722,689 $ 3,502,095 Interest-bearing demand 1,731,814 1,718,541 Savings 2,682,068 2,884,378 Time certificates, $250,000 and over 250,180 46,350 Other time certificates 447,287 177,649 Total deposits $ 7,834,038 $ 8,329,013 Overdrawn deposit balances of $1.8 million and $1.8 million were classified as consumer loans at December 31, 2023 and 2022, respectively. At December 31, 2023, the scheduled maturities of time deposits were as follows (in thousands): Scheduled 2024 $ 626,979 2025 59,053 2026 8,453 2027 1,868 2028 1,114 Thereafter — Total $ 697,467

Other Borrowings

Other Borrowings	12 Months Ended
	Dec. 31, 2023
Debt Disclosure [Abstract]
Other Borrowings	Other Borrowings A summary of the balances of other borrowings follows: December 31, 2023 2022 (in thousands) Overnight borrowing at FHLB, fixed rate, as of December 31, 2023 of 5.70%, payable on January 2, 2024 $ 400,000 $ — Term borrowing at FHLB, fixed rate, as of December 31, 2023 of 4.75%, payable on April 8, 2024 200,000 — Overnight borrowing at FHLB, fixed rate, as of December 31, 2022 of 4.65%, payable on January 3, 2023 — 216,700 Other collateralized borrowings, fixed rate, as of December 31, 2023 and 2022 of 0.05%, payable on January 2, 2024 and January 3, 2023, respectively 32,582 47,905 Total other borrowings $ 632,582 $ 264,605 Other collateralized borrowings are generally overnight maturity borrowings from non-financial institutions that are collateralized by securities owned by the Company. As of December 31, 2023, the Company has pledged as collateral and sold under agreements to repurchase investment securities with fair value of $32.6 million under these other collateralized borrowings. The Company maintains a collateralized line of credit with the FHLB. Based on the FHLB stock requirements at December 31, 2023, this line provided for maximum borrowings of $2.5 billion of which $600.0 million was outstanding. As of December 31, 2023, the Company had designated investment securities with a fair value of $69.2 million and loans with unpaid principal balances totaling $4.6 billion as potential collateral under this collateralized line of credit with the FHLB. The Company maintains a collateralized line of credit with the Federal Reserve Bank of San Francisco (“FRB”). As of December 31, 2023, this line provided for maximum borrowings of $350.0 million of which none was outstanding. As of December 31, 2023, the Company has loans with unpaid principal balances totaling $444.5 million as potential collateral under this collateralized line of credit with the FRB. The Company has available unused correspondent banking lines of credit from commercial banks totaling $30.0 million for federal funds transactions at December 31, 2023.

Junior Subordinated Debt

Junior Subordinated Debt	12 Months Ended
	Dec. 31, 2023
Equity [Abstract]
Junior Subordinated Debt	Junior Subordinated Debt At December 31, 2023, the Company had five wholly-owned subsidiary business trusts that had issued $63.0 million of trust preferred securities (the “Capital Trusts”). Trust preferred securities accrue and pay distributions periodically at specified annual rates as provided in the indentures. The trusts used the net proceeds from the offering to purchase a like amount of subordinated debentures (the “Debentures”) of the Company. The Debentures are the sole assets of the trusts. The Company’s obligations under the subordinated debentures and related documents, taken together, constitute a full and unconditional guarantee by the Company of the obligations of the trusts. The trust preferred securities are mandatorily redeemable upon the maturity of the Debentures, or upon earlier redemption as provided in the indentures. The Company has the right to redeem the Debentures in whole (but not in part) on or after specific dates, at a redemption price specified in the indentures plus any accrued but unpaid interest to the redemption date. The Company also has a right to defer consecutive payments of interest on the debentures for up to five years. The Company organized two of the Capital Trusts. The Company acquired its three other Capital Trusts and assumed their related Debentures as a result of its acquisition of North Valley Bancorp in 2014. The acquired Debentures were recorded on the Company’s books at their fair values on the acquisition date. The related fair value discounts to face value of these Debentures will be amortized over the remaining period in which their values are fully allowed to be included in the Company's capital ratio calculations using the effective interest method. The recorded book values of the Debentures issued by the Capital Trusts are reflected as junior subordinated debt in the Company’s consolidated balance sheets. The common stock issued by the Capital Trusts and owned by the Company is recorded in other assets in the Company’s consolidated balance sheets. The recorded book value of the debentures issued by the Capital Trusts, less the recorded book value of the common stock of the Capital Trusts owned by the Company will continue to qualify as Tier 1 or Tier 2 capital under interim guidance issued by the Board of Governors of the Federal Reserve System until only five years remain until their scheduled maturity. In connection with the acquisition of Valley Republic Bancorp the Company assumed $36.0 million in subordinated capital notes, comprised of $16.0 million that matures in 2029 and $20.0 million that matures in 2035. The notes that mature in 2029 provide for quarterly interest payments at a fixed rate of 6.00% until March 29, 2024 and then will have a floating rate of three month SOFR plus 3.52% until maturity. The notes that mature in 2035 provide for quarterly interest payments at a fixed rate of 5.00% until August 27, 2025 and then will have a floating rate of 90-day average SOFR plus 4.90% until maturity. The acquired subordinated capital notes were recorded on the Company’s books at their fair values on the acquisition date. The related fair value premiums to face value will be amortized over the remaining maturity period using the effective interest method. The following table summarizes the terms and recorded balance of each subordinated debenture as of the date indicated (dollars in thousands): Coupon Rate As of December 31, 2023 December 31, 2022 Subordinated Debt Series Maturity Face Current Recorded Recorded TriCo Cap Trust I 10/7/2033 $ 20,619 3.05 % 8.71 % $ 20,619 $ 20,619 TriCo Cap Trust II 7/23/2034 20,619 2.55 % 8.22 % 20,619 20,619 North Valley Trust II 4/24/2033 6,186 3.25 % 8.89 % 5,602 5,503 North Valley Trust III 7/23/2034 5,155 2.80 % 8.47 % 4,472 4,383 North Valley Trust IV 3/15/2036 10,310 1.33 % 6.98 % 7,615 7,393 VRB Subordinated - 6% 3/29/2029 16,000 Fixed 6.00 % 17,000 17,187 VRB Subordinated - 5% 8/27/2035 20,000 Fixed 5.00 % 25,172 25,336 $ 98,889 $ 101,099 $ 101,040

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Restricted Cash Balances — Reserves (in the form of deposits with the San Francisco Federal Reserve Bank) were not required to be maintained as of December 31, 2023 and 2022. Financial Instruments with Off-Balance-Sheet Risk — The Company is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit, standby letters of credit, and deposit account overdraft privilege. Those instruments involve, to varying degrees, elements of risk in excess of the amount recognized in the balance sheet. The contract amounts of those instruments reflect the extent of involvement the Company has in particular classes of financial instruments. The Company’s exposure to loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and standby letters of credit written is represented by the contractual amount of those instruments. The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. The Company’s exposure to loss in the event of nonperformance by the other party to the financial instrument for deposit account overdraft privilege is represented by the overdraft privilege amount disclosed to the deposit account holder. The following table presents a summary of the Bank’s commitments and contingent liabilities: December 31, (in thousands) 2023 2022 Financial instruments whose amounts represent risk: Commitments to extend credit: Commercial loans $ 788,742 $ 656,705 Consumer loans 652,110 760,588 Real estate mortgage loans 453,647 458,896 Real estate construction loans 331,178 312,371 Standby letters of credit 38,449 26,599 Deposit account overdraft privilege 121,539 126,634 Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates of one year or less or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s credit worthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on Management’s credit evaluation of the customer. Collateral held varies, but may include accounts receivable, inventory, property, plant and equipment, residential properties, and income-producing commercial properties. Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. Those guarantees are primarily issued to support private borrowing arrangements. Most standby letters of credit are issued for one year or less. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. Collateral requirements vary, but in general follow the requirements for other loan facilities. Deposit account overdraft privilege amount represents the unused overdraft privilege balance available to the Company’s deposit account holders who have deposit accounts covered by an overdraft privilege. The Company has established an overdraft privilege for certain of its deposit account products whereby all holders of such accounts who bring their accounts to a positive balance at least once every thirty days receive the overdraft privilege. The overdraft privilege allows depositors to overdraft their deposit account up to a predetermined level. The predetermined overdraft limit is set by the Company based on account type. Legal Proceedings — The Company is party to various legal and administrative proceedings and claims. While any litigation contains an element of uncertainty, management believes that neither the Company nor its subsidiaries are a party to any pending legal proceedings that are material, nor is their property the subject of any other material pending legal proceeding at this time. All other legal proceedings are routine and arise out of the ordinary course of the Bank’s business. None of those proceedings are currently expected to have a material adverse impact upon the Company’s and the Bank’s business, their consolidated financial position nor their operations in any material amount not already accrued, after taking into consideration any applicable insurance and any contingency reserves. Other Commitments and Contingencies —The Company has entered into employment agreements or change of control agreements with certain officers of the Company providing severance payments and accelerated vesting of benefits under supplemental retirement agreements to the officers in the event of a change in control of the Company and termination for other than cause or after a substantial and material change in the officer’s title, compensation or responsibilities. The Bank owns 13,396 shares of Class B common stock of Visa Inc. which are convertible into Class A common stock at a conversion ratio of 1.5875 per Class B share. As of December 31, 2023, the value of the Class A shares was $260.35 per share. Utilizing the conversion ratio, the value of unredeemed Class A equivalent shares owned by the Bank was $5,537,000 as of December 31, 2023, and has not been reflected in the accompanying consolidated financial statements. The shares of Visa Class B common stock are restricted and may not be transferred. Visa Member Banks are required to fund an escrow account to cover settlements, resolution of pending litigation and related claims. If the funds in the escrow account are insufficient to settle all the covered litigation, Visa may sell additional Class A shares, use the proceeds to settle litigation, and further reduce the conversion ratio. If funds remain in the escrow account after all litigation is settled, the Class B conversion ratio will be increased to reflect that surplus. Mortgage loans sold to investors may be sold with servicing rights retained, with only the standard legal representations and warranties regarding recourse to the Bank. Management believes that any liabilities that may result from such recourse provisions are not significant.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2023
Equity [Abstract]
Shareholders' Equity	Shareholders’ Equity Dividends Paid The Bank paid to the Company cash dividends in the aggregate amounts of $52.8 million, $64.2 million, and $31.6 million in 2023, 2022, and 2021, respectively. The Bank is regulated by the Federal Deposit Insurance Corporation (“FDIC”) and the State of California Department of Financial Protection & Innovation (the “DFPI”). Absent approval from the Commissioner of the DPFI, California banking laws generally limit the Bank’s ability to pay dividends to the lesser of (1) retained earnings or (2) net income for the last three fiscal years, less cash distributions paid during such period. Under this law, at December 31, 2023, the Bank could have paid dividends of $223.4 million to the Company without the approval of the Commissioner of the DFPI. Stock Repurchase Plan On February 25, 2021 the Board of Directors approved the authorization to repurchase up to 2,000,000 shares of the Company's common stock (the "2021 Repurchase Plan" or the "Plan"), which approximated 6.7% of the shares outstanding as of the approval date. The actual timing of any share repurchases will be determined by the Company's management and therefore the total value of the shares to be purchased under the program is subject to change. The Plan has no expiration date (in accordance with applicable laws and regulations) and for years ended December 31, 2023, 2022 and 2021, the Company repurchased 150,000, 576,881, and 63,317 shares under this Plan. As of December 31, 2023, 1,209,802 shares remained available for repurchases under the Plan. Stock Repurchased Under Equity Compensation Plans The Company's shareholder-approved equity compensation plans permit employees to tender recently vested shares in lieu of cash for the payment of withholding taxes on such shares. During the years ended December 31, 2023, 2022, and 2021, employees tendered 2,506, 39,447, and 28,276 shares, respectively, of the Company's common stock in connection with option exercises. Employees also tendered 56,714, 27,840 and 19,413 shares in connection with other share based awards during December 31, 2023, 2022 and 2021, respectively. In total, shares of the Company's common stock tendered had market values of $2.3 million, $1.3 million, and $2.1 million for the years ended December 31, 2023, 2022 and 2021, respectively. The tendered shares were retired. The market value of tendered shares is the last market trade price at closing on the day an option is exercised or the other share based award vests. Stock repurchased under equity incentive plans are not included in the total of stock repurchased under the 2021 or 2019 Repurchase Plans.

Stock Options and Other Equity-

Stock Options and Other Equity-Based Incentive Instruments	12 Months Ended
	Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]
Stock Options and Other Equity-Based Incentive Instruments	Stock Options and Other Equity-Based Incentive Instruments In April 2019, the Company’s Board of Directors adopted the TriCo Bancshares 2019 Equity Incentive Plan (2019 Plan) covering officers, employees, directors of, and consultants to, the Company. The 2019 Plan was approved by the Company’s shareholders in May 2019. The 2019 Plan allows the Company to issue equity-based incentives representing up to 1,500,000 shares, such as incentive stock options, nonqualified stock options, stock appreciation rights, restricted stock, restricted stock units and performance awards (which could either be restricted stock or restricted stock units) (collectively, Awards). The 2019 Plan contains several enhanced corporate governance provisions, including: expressly providing that executives’ Awards and cash incentive compensation are subject to TriCo’s potential clawback or recoupment if the Company must restate its financial statements; generally imposing a one year minimum vesting period on Awards; generally requiring participants to hold at least 50% of the shares acquired under an Award for at least one year; and clarifying that credit for dividends declared on shares of common stock underlying an Award is subject to the same vesting requirements as the common stock underlying the Award. The number of shares available for issuance under the 2019 Plan will be reduced by: (i) one share for each share of common stock issued pursuant to a stock option; (ii) the total number of stock appreciation rights that are exercised, including any shares of common stock underlying such Awards that are not actually issued to the participant as the result of a net settlement; (iii) two shares for each share of common stock issued pursuant to a performance award, a restricted share Award or an RSU Award and (iv) any shares of common stock used to pay any exercise price or tax withholding obligation with respect to any Award. When Awards made under the 2019 Plan expire or are forfeited or cancelled, the underlying shares will become available for future Awards under the 2019 Plan. To the extent that a share of common stock pursuant to an Award that counted as two shares again becomes available for issuance under the 2019 Plan, the number of shares of common stock available for issuance under the 2019 Plan will increase by two shares. If shares of common stock issued pursuant to the Plan are repurchased by, or are surrendered or forfeited to the Company at no more than cost, then such shares will again be available for the grant of Awards under the Plan. Any shares of common stock repurchased by the Company with cash proceeds from the exercise of options will not, however, be added back to the pool of share available for issuance under the 2019 Plan. Shares awarded and delivered under the 2019 Plan may be authorized but unissued shares or reacquired shares. Shares tendered to TriCo or withheld from delivery to a participant as payment of the exercise price or in connection with the “net exercise” of a stock option or to satisfy TriCo’s tax withholding obligations will not again become available for future Awards under the 2019 Plan. As of December 31, 2023, there were no outstanding options for the purchase of common shares and 144,487 RSUs were outstanding. The number of shares that remain available for issuance is not more than 517,773, which could decrease based on the level of the Company's future performance and outcome of certain vesting requirements. The 2019 Plan replaced the TriCo Bancshares 2009 Equity Incentive Plan (2009 Plan), which expired on March 26, 2019. As a result of its expiration, no further awards may be issued under the 2009 Plan, though all awards under the 2009 Plan that were outstanding as of its expiration continue to be governed by the terms, conditions and procedures set forth in the 2009 Plan and any applicable award agreement. As of December 31, 2023, 7,500 options for the purchase of common shares remain outstanding under the 2009 Plan. Stock option activity is summarized in the following table for the dates indicated: Number of Option Price Weighted Outstanding at January 1, 2022 78,825 $15.34 to $23.21 $ 19.28 Options granted — — — Options exercised (63,325) $15.34 to $19.46 $ 18.79 Options forfeited — — — Outstanding at December 31, 2022 15,500 $19.46 to $23.21 $ 21.27 Options granted — — — Options exercised (8,000) $19.46 $ 19.46 Options forfeited — — — Outstanding at December 31, 2023 7,500 $23.21 $ 23.21 The following table shows the number, weighted-average exercise price, intrinsic value, and weighted average remaining contractual life of options exercisable, options not yet exercisable and total options outstanding as of December 31, 2023: Currently Currently Not Total Number of options 7,500 — 7,500 Weighted average exercise price $ 23.21 $ — $ 23.21 Intrinsic value (in thousands) $ 148 $ — $ 148 Weighted average remaining contractual term (yrs.) 0.8 n/a 0.8 All options outstanding as of December 31, 2023 are fully vested. The Company did not modify any option grants during the three year period ended December 31, 2023. The following table shows the total intrinsic value of options exercised, the total fair value of options vested, total compensation costs for options recognized in income, total tax benefit and excess tax benefits recognized in income related to compensation costs for options during the periods indicated: Year Ended December 31, 2023 2022 2021 Intrinsic value of options exercised $ 134,000 $ 1,190,000 $ 1,476,000 Fair value of options that vested — — — Total compensation costs for options recognized in expense — — — Total tax benefit recognized in income related to compensation costs for options 40,000 — — Excess tax benefit recognized in income — — — There were no stock options granted during 2023, 2022 and 2021, respectively. Restricted stock unit activity is summarized in the following table for the dates indicated: Service Condition Vesting RSUs Market Plus Service Condition Number Weighted Average Number of Weighted Average Outstanding at January 1, 2023 139,194 114,481 RSUs granted 84,066 $ 34.52 55,908 $ 27.72 Additional market plus service condition RSUs vested — 10,301 RSUs added through dividend credits 4,706 — RSUs released through vesting (81,902) (55,928) RSUs forfeited/expired (1,577) (1,660) Outstanding at December 31, 2023 144,487 123,102 The Company uses a Monte Carlo simulation model to determine the grant-date fair value of awards with market plus service conditions (PSU). The weighted average fair value and assumptions used to value the PSU awards granted with market-based performance conditions are as follows: December 31, 2023 2022 Performance share fair value $ 27.73 $ 40.89 Risk-free interest rate 4.16 % 4.10 % Expected volatility 33.86 % 39.01 % Expected life (years) 3 3 Expected dividend yield 3.22 % 2.32 % The 144,487 of service condition vesting RSUs outstanding as of December 31, 2023 include a feature whereby each RSU outstanding is credited with a dividend amount equal to any common stock cash dividend declared and paid, and the credited amount is divided by the closing price of the Company’s stock on the dividend payable date to arrive at an additional amount of RSUs outstanding under the original grant. Additional RSUs credited through dividends are subject to the same vesting requirements as the original grant. The Company expects to recognize $4.0 million of pre-tax compensation costs related to these service condition vesting RSUs between December 31, 2023 and their vesting dates. The Company did not modify any service condition vesting RSUs during 2023 or 2022. The Company expects to recognize $2.3 million of pre-tax compensation costs related to the market plus service condition RSUs between December 31, 2023 and their vesting dates. As of December 31, 2023, the number of market plus service condition vesting RSUs outstanding that will actually vest, and be released, may be reduced to zero or increased to 184,653 depending on the total return of the Company’s common stock versus the total return of an index of bank stocks from the grant date to the vesting date. The Company did not modify any market plus service condition vesting RSUs during 2023 or 2022. The following table shows the compensation costs and excess tax benefits for RSUs recognized in income for the periods indicated: Year Ended December 31, 2023 2022 2021 Total compensation costs recognized in income Service condition vesting RSUs $ 2,807,000 $ 2,883,000 $ 1,728,000 Market plus service condition vesting RSUs 1,319,000 986,000 910,000 Excess tax benefit recognized in income Service condition vesting RSUs $ 924,000 $ 1,079,000 $ 626,000 Market plus service condition vesting RSUs 594,000 355,000 226,000

Non-interest Income and Expense

Non-interest Income and Expense	12 Months Ended
	Dec. 31, 2023
Other Income and Expenses [Abstract]
Non-interest Income and Expense	Non-interest Income and Expense The components of other non-interest income were as follows: Year Ended December 31, (in thousands) 2023 2022 2021 ATM and interchange fees $ 26,459 $ 26,767 $ 25,356 Service charges on deposit accounts 17,595 16,536 14,013 Other service fees 4,732 4,274 3,570 Mortgage banking service fees 1,808 1,887 1,881 Change in value of mortgage loan servicing rights (506) 301 (872) Total service charges and fees 50,088 49,765 43,948 Asset management and commission income 4,517 3,986 3,668 Increase in cash value of life insurance 3,150 2,858 2,775 Gain on sale of loans 1,166 2,342 9,580 Lease brokerage income 441 820 746 Sale of customer checks 1,383 1,167 459 Loss on sale of investment securities (284) — — Gain (loss) on marketable equity securities 36 (340) (86) Other 903 2,448 2,574 Total other noninterest income 11,312 13,281 19,716 Total noninterest income $ 61,400 $ 63,046 $ 63,664 Mortgage banking servicing fee income (expense), net of change in value of mortgage loan servicing rights, totaling $1.3 million, $2.2 million, and $1.0 million were recorded within service charges and fees for the years ended December 31, 2023, 2022, and 2021, respectively. The components of noninterest expense were as follows: Year Ended December 31, (in thousands) 2023 2022 2021 Base salaries, net of deferred loan origination costs $ 94,564 $ 84,861 $ 69,844 Incentive compensation 15,557 17,908 14,957 Benefits and other compensation costs 25,674 27,083 21,550 Total salaries and benefits expense 135,795 129,852 106,351 Occupancy 16,135 15,493 14,910 Data processing and software 18,933 14,660 13,985 Equipment 5,644 5,733 5,358 ATM and POS network charges 7,080 6,984 6,040 Merger and acquisition expense — 6,253 1,523 Advertising 3,531 3,694 2,899 Professional fees 7,358 4,392 3,657 Intangible amortization 6,118 6,334 5,464 Telecommunications 2,547 2,298 2,253 Regulatory assessments and insurance 5,276 3,142 2,581 Courier service 1,851 2,013 1,214 Operational losses 2,444 1,000 964 Postage 1,236 1,147 710 Gain on sale or acquisition of foreclosed assets (133) (481) (233) Loss (gain) on disposal of fixed assets 23 (1,070) (439) Other miscellaneous expense 19,344 15,201 11,038 Total other noninterest expense 97,387 86,793 71,924 Total noninterest expense $ 233,182 $ 216,645 $ 178,275

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The components of consolidated income tax expense are as follows (in thousands): Year Ended December 31, 2023 2022 2021 Current tax expense Federal $ 26,133 $ 34,155 $ 28,763 State 19,781 22,355 18,221 $ 45,914 56,510 46,984 Deferred tax expense Federal (1,330) (5,224) (872) State (1,069) (2,798) (64) (2,399) (8,022) (936) Total tax expense $ 43,515 $ 48,488 $ 46,048 A deferred tax asset or liability is recognized for the tax consequences of temporary differences in the recognition of revenue and expense for financial and tax reporting purposes. The net change during the year in the deferred tax asset or liability results in a deferred tax expense or benefit. The Company recognized, as components of tax expense, tax credits and other tax benefits, and amortization expense relating to our investments in Qualified Affordable Housing Projects as follows for the periods indicated (in thousands): Year Ended December 31, 2023 2022 2021 Tax credits and other tax benefits – decrease in tax expense $ (10,857) $ (6,370) $ (4,224) Amortization – increase in tax expense $ 9,092 $ 6,178 $ 3,604 The carrying value of Low Income Housing Tax Credit Funds was $96.9 and $91.0 million as of December 31, 2023 and 2022, respectively. As of December 31, 2023, the Company has committed to make additional capital contributions to the Low Income Housing Tax Credit Funds in the amount of $63.3 million, and these contributions are expected to be made over the next several years. The provisions for income taxes applicable to income before taxes for the years ended December 31, 2023, 2022 and 2021 differ from amounts computed by applying the statutory Federal income tax rates to income before taxes. The effective tax rate and the statutory federal income tax rate are reconciled as follows: Year Ended December 31, (in thousands) 2023 2022 2021 Federal statutory income tax rate 21.0 % 21.0 % 21.0 % State income taxes, net of federal tax benefit 7.9 7.9 7.9 Tax-exempt interest on municipal obligations (0.7) (0.7) (0.5) Tax-exempt life insurance related income (0.4) (0.4) (0.5) Low income housing tax credits (6.6) (3.7) (2.6) Low income housing tax credit amortization 5.6 3.6 2.2 Equity compensation 0.3 (0.2) (0.1) Non-deductible merger expenses — 0.1 0.1 Other (0.1) 0.3 0.6 Effective Tax Rate 27.0 % 27.9 % 28.1 % The temporary differences, tax effected, which give rise to the Company’s net deferred tax asset recorded in other assets are as follows for the years indicated (in thousands): December 31, 2023 2022 Deferred tax assets: Allowance for losses and reserve for unfunded commitments $ 37,656 $ 32,519 Deferred compensation 1,534 1,696 Other accrued expenses 3,899 2,720 Additional unfunded status of the supplemental retirement plans 15,434 16,036 Operating lease liability 8,355 8,575 State taxes 3,346 3,649 Share based compensation 1,050 1,132 Nonaccrual interest 706 643 Acquisition cost basis 12,046 14,640 Unrealized loss on securities 68,535 85,897 Tax credits 852 852 Net operating loss carryforwards 953 2,098 Other 190 120 Total deferred tax assets 154,556 170,577 Deferred tax liabilities: Securities income (777) (777) Depreciation (8,364) (8,270) Right of use asset (7,726) (7,941) Funded pension liability (3,999) (4,110) Securities accretion (2,265) (1,265) Mortgage servicing rights valuation (1,946) (1,976) Core deposit intangible (2,814) (4,778) Junior subordinated debt (1,171) (1,293) Prepaid expenses and other (1,170) (991) Total deferred tax liability (30,232) (31,401) Net deferred tax asset $ 124,324 $ 139,176 As part of the merger with FNB Bancorp in 2018 and North Valley Bancorp in 2014, TriCo acquired federal and state net operating loss carryforwards, capital loss carryforwards, and tax credit carryforwards. These tax attribute carryforwards will be subject to provisions of the tax law that limit the use of such losses and credits generated by a company prior to the date certain ownership changes occur. The amount of the Company’s net operating loss carryforwards that are subject to these limitations as of December 31, 2023 were approximately $2.7 million for federal and $4.8 million for California. The amount of the Company’s tax credits that would be subject to these limitations as of December 31, 2023 are $0.3 million and $0.6 million for federal and California, respectively. Due to the limitation, a significant portion of the state tax credits will expire regardless of whether the Company generates future taxable income. As such, the Company has recorded the future benefit of these tax credits on the books at the value which is more likely than not to be realized. These tax loss and tax credit carryforwards expire at various dates through 2032. The Company believes that a valuation allowance is not needed to reduce the deferred tax assets as it is more likely than not that the results of future operations will generate sufficient taxable income to realize the deferred tax assets, including the tax attribute carryforwards acquired as part of past mergers. Disclosure of unrecognized tax benefits at December 31, 2023 and 2022 were not considered significant for disclosure purposes. Management does not expect the unrecognized tax benefit will materially change in the next 12 months. During the years ended December 31, 2023 and December 31, 2022 the Company did not recognize any significant amounts related to interest and penalties associated with taxes. The Company files income tax returns in the U.S. federal jurisdiction, and California. With few exceptions, the Company is no longer subject to U.S. federal and state/local income tax examinations by tax authorities for years before 2020 and 2019, respectively.

Earnings per Share

Earnings per Share	12 Months Ended
	Dec. 31, 2023
Earnings Per Share [Abstract]
Earnings per Share	Earnings per Share Earnings per share have been computed based on the following: Year Ended December 31, (in thousands) 2023 2022 2021 Net income $ 117,390 $ 125,419 $ 117,655 Average number of common shares outstanding 33,261 32,584 29,721 Effect of dilutive stock options and restricted stock 94 137 161 Average number of common shares outstanding used to calculate diluted earnings per share 33,355 32,721 29,882 Equity awards excluded from diluted earnings per share because their effect was antidilutive — — —

Comprehensive Income (Loss)

Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2023
Equity [Abstract]
Comprehensive Income (Loss)	Comprehensive Income (Loss) Accounting principles generally require that recognized revenue, expenses, gains and losses be included in net income. Although certain changes in assets and liabilities, such as unrealized gains and losses on available-for-sale securities, are reported as a separate component of the equity section of the balance sheet, such items, along with net income, are components of comprehensive income. The components of other comprehensive income and related tax effects are as follows: Year Ended December 31, (in thousands) 2023 2022 2021 Unrealized holding gains (losses) on available for sale securities before reclassifications $ 58,444 $ (290,157) $ (19,575) Amounts reclassified out of accumulated other comprehensive income: Realized loss (gain) on debt securities 284 — — Total amounts reclassified out of accumulated other comprehensive income 284 — — Unrealized holding gains (losses) on available for sale securities after reclassifications 58,728 (290,157) (19,575) Tax effect (17,363) 85,781 5,787 Unrealized holding gains (losses) on available for sale securities, net of tax 41,365 (204,376) (13,788) Change in unfunded status of the supplemental retirement plans before reclassifications 81 11,522 3,497 Amounts reclassified out of accumulated other comprehensive income: Amortization of prior service cost — (28) (58) Amortization of actuarial losses (455) 8 254 Total amounts reclassified out of accumulated other comprehensive income (455) (20) 196 Change in unfunded status of the supplemental retirement plans after reclassifications (374) 11,502 3,693 Tax effect 111 (3,401) (1,091) Change in unfunded status of the supplemental retirement plans, net of tax (263) 8,101 2,602 Change in joint beneficiary agreement liability before reclassifications (366) 1,389 (113) Tax effect — — — Change in unfunded status of the supplemental retirement plans, net of tax (366) 1,389 (113) Total other comprehensive income (loss) $ 40,736 $ (194,886) $ (11,299) The components of accumulated other comprehensive loss, included in shareholders’ equity, are as follows: Year Ended December 31, (in thousands) 2023 2022 Net unrealized loss on available for sale securities $ (231,821) $ (290,549) Tax effect 68,534 85,897 Unrealized holding loss on available for sale securities, net of tax (163,287) (204,652) Unfunded status of the supplemental retirement plans 13,527 13,901 Tax effect (3,999) (4,110) Unfunded status of the supplemental retirement plans, net of tax 9,528 9,791 Joint beneficiary agreement liability, net of tax 590 956 Accumulated other comprehensive loss $ (153,169) $ (193,905)

Retirement Plans

Retirement Plans	12 Months Ended
	Dec. 31, 2023
Retirement Benefits [Abstract]
Retirement Plans	Retirement Plans 401(k) Plan The Company sponsors a 401(k) Plan whereby substantially all employees age 21 and over with 90 days of service may participate. Participants may contribute a portion of their compensation subject to certain limits based on federal tax laws. The Company provides a discretionary matching contribution equal to 50% of participant’s elective deferrals, up to 4% of eligible compensation. The Company recorded salaries & benefits expense attributable to the 401(k) Plan matching contributions and 401(k) Plan matching contributions for the years ended: Year Ended December 31, (in thousands) 2023 2022 2021 401(k) Plan benefits expense $ 1,767 $ 1,541 $ 1,211 401(k) Plan contributions made by the Company $ 1,524 $ 1,214 $ 1,121 Employee Stock Ownership Plan Substantially all employees with at least one year of service are covered by a discretionary employee stock ownership plan (ESOP). Company shares owned by the ESOP are paid dividends and included in the calculation of earnings per share as common shares outstanding. Contributions are made to the plan at the discretion of the Board of Directors. Expenses related to the Company’s ESOP, included in benefits and other compensation costs under salaries and benefits expense, and contributions to the plan for the years ended were: Year Ended December 31, (in thousands) 2023 2022 2021 ESOP benefits expense $ 3,075 $ 2,824 $ 1,888 ESOP contributions made by the Company $ 2,977 $ 3,535 $ 878 Deferred Compensation Plans The Company has deferred compensation plans for certain directors and key executives, which allow certain directors and key executives designated by the Board of Directors of the Company to defer a portion of their compensation. The Company has purchased insurance on the lives of certain of the participants and intends to hold these policies until death as a cost recovery of the Company’s deferred compensation obligations of $5.2 million and $5.7 million at December 31, 2023 and 2022, respectively. Earnings credits on deferred balances included in non-interest expense are included in the following table: Year Ended December 31, (in thousands) 2023 2022 2021 Deferred compensation earnings credits included in non-interest expense $ 210 $ 187 $ 176 Supplemental Retirement Plans The Company has supplemental retirement plans for certain directors and key executives. These plans are non-qualified defined benefit plans and are unsecured and unfunded. The Company has purchased insurance on the lives of the participants and intends to hold these policies until death as a cost recovery of the Company’s retirement obligations. The cash values of the insurance policies purchased to fund the deferred compensation obligations and the supplemental retirement obligations were $136.9 million and $133.7 million at December 31, 2023 and 2022, respectively. The Company recorded in other liabilities the additional funded status of the supplemental retirement plans of $13.5 million and $13.9 million related to the supplemental retirement plans as of December 31, 2023 and 2022, respectively. These amounts represent the amount by which the projected benefit obligations for these retirement plans exceeded the fair value of plan assets plus amounts previously accrued related to the plans. The projected benefit obligation is recorded in other liabilities. At December 31, 2023 and 2022, the additional funded status of the supplemental retirement plans of $13.5 million and $13.9 million were offset by a reduction of shareholders’ equity accumulated other comprehensive gain of $9.5 million and $9.8 million, respectively, representing the after-tax impact of the additional funded status of the supplemental retirement plans, and the related deferred tax liability of $4.0 million and $4.1 million, respectively. Amounts recognized as a component of accumulated other comprehensive income (loss) as of year-end that have not been recognized as a component of the combined net period benefit cost of the Company’s defined benefit pension plans are presented in the following table. The Company expects to recognize approximately $0.5 million of the net actuarial loss reported in the following table as of December 31, 2023 as a component of net periodic benefit cost during 2022. December 31, (in thousands) 2023 2022 Transition obligation $ — $ — Prior service cost — — Net actuarial (gain) / loss (13,527) (13,901) Amount included in accumulated other comprehensive income (loss) (13,527) (13,901) Deferred tax liability / (benefit) 3,999 4,109 Amount included in accumulated other comprehensive income (loss), net of tax $ (9,528) $ (9,792) Information pertaining to the activity in the supplemental retirement plans, using a measurement date of December 31, is as follows: December 31, (in thousands) 2023 2022 Change in benefit obligation: Benefit obligation at beginning of year $ (40,341) $ (43,834) Acquisition of obligations — (3,310) Service cost (138) (1,624) Interest cost (2,016) (1,731) Actuarial (loss)/gain 81 10,266 Plan amendments — (2,141) Benefits paid 3,769 2,033 Benefit obligation at end of year $ (38,645) $ (40,341) Change in plan assets: Fair value of plan assets at beginning of year $ — $ — Fair value of plan assets at end of year $ — $ — Funded status $ (38,645) $ (40,341) Unrecognized net obligation existing at January 1, 1986 — — Unrecognized net actuarial (loss)/gain (13,527) (13,901) Unrecognized prior service cost — — Accumulated other comprehensive loss 13,527 13,901 Accrued benefit cost $ (38,645) $ (40,341) Accumulated benefit obligation $ (38,645) $ (40,341) The following table sets forth the net periodic benefit cost recognized for the supplemental retirement plans: Year Ended December 31, (in thousands) 2023 2022 2021 Net pension cost included the following components: Service cost-benefits earned during the period $ 138 $ 1,624 $ 1,103 Interest cost on projected benefit obligation 2,016 1,731 1,518 Amortization of net obligation at transition — — — Amortization of prior service cost — (28) (58) Recognized net actuarial loss 10 (86) 254 Amortization of loss/(gain) (466) (114) — Recognition of pension service cost to due amendment — 2,141 — Net periodic pension cost $ 1,698 $ 5,268 $ 2,817 The following table sets forth assumptions used in accounting for the plans: Year Ended December 31, 2023 2022 2021 Discount rate used to calculate benefit obligation 5.01 % 5.23 % 2.74 % Discount rate used to calculate net periodic pension cost 5.23 % 2.74 % 2.40 % Average annual increase in executive compensation — % — % 3.25 % Average annual increase in director compensation — % — % — % The following table sets forth the expected benefit payments to participants and estimated contributions to be made by the Company under the supplemental retirement plans for the years indicated: (in thousands) Expected Benefit Estimated 2024 $ 2,736 $ 2,736 2025 2,906 2,906 2026 2,895 2,895 2027 2,916 2,916 2028 2,885 2,885 2028-2032 18,580 18,580

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2023
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Certain directors, officers, and companies with which they are associated were customers of, and had banking transactions with, the Company or the Bank in the ordinary course of business. The following table summarizes the activity in these loans for the periods indicated: (in thousands) Balance January 1, 2022 $ 6,316 Advances/new loans 11,960 Removed/payments (6,892) Balance December 31, 2022 11,384 Advances/new loans — Removed/payments (9,851) Balance December 31, 2023 $ 1,533 Deposits of directors, officers and other related parties to the Bank totaled $29.7 million and $28.4 million at December 31, 2023 and 2022, respectively.

Fair Value Measurement

Fair Value Measurement	12 Months Ended
	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Fair Value Measurement	Fair Value Measurement The Company utilizes fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. In estimating fair value, the Company utilizes valuation techniques that are consistent with the market approach, income approach, and/or the cost approach. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability including assumptions about the risk inherent in a particular valuation technique, the effect of a restriction on the sale or use of an asset and the risk of nonperformance. Securities available-for-sale and mortgage servicing rights are recorded at fair value on a recurring basis. Additionally, from time to time, the Company may be required to record at fair value other assets on a nonrecurring basis, such as loans held for sale, loans held for investment and certain other assets. These nonrecurring fair value adjustments typically involve application of lower of cost or market accounting or impairment write-downs of individual assets. The Company groups assets and liabilities at fair value in three levels, based on the markets in which the assets and liabilities are traded and the observable nature of the assumptions used to determine fair value. These levels are: Level 1 — Valuation is based upon quoted prices for identical instruments traded in active markets. Level 2 — Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market. Level 3 — Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques. Securities available for sale — Securities available for sale are recorded at fair value on a recurring basis. Fair value measurement is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security’s credit rating, prepayment assumptions and other factors such as credit loss assumptions. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange, U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets and money market funds. Level 2 securities include mortgage-backed securities issued by government sponsored entities, municipal bonds and corporate debt securities. The Company had no securities classified as Level 3 during any of the periods covered in these financial statements. Loans held for sale — Loans held for sale are carried at the lower of cost or fair value. The fair value of loans held for sale is based on what secondary markets are currently offering for loans with similar characteristics. As such, we classify those loans subjected to nonrecurring fair value adjustments as Level 2. Individually evaluated loans — Loans are not recorded at fair value on a recurring basis. However, from time to time, loans may require individual analysis and an allowance for credit losses is established. Loans for which it is probable that payment of interest and principal will not be made in accordance with the contractual terms of the loan agreement are an example. The fair value of individually evaluated loans is estimated using one of several methods, including collateral value, fair value of similar debt, enterprise value, liquidation value and discounted cash flows. Those individually evaluated loans not requiring an allowance represent loans for which the fair value of the expected repayments or collateral exceed the recorded investments in such loans. Individually evaluated loans where an allowance is established based on the fair value of collateral require classification in the fair value hierarchy. When the fair value of the collateral is based on an observable market price or a current appraised value which uses substantially observable data, the Company records the loan as nonrecurring Level 2. When an appraised value is not available or management determines the fair value of the collateral is below the appraised value, or the appraised value contains a significant unobservable assumption, such as deviations from comparable sales, and there is no observable market price, the Company records the loan as nonrecurring Level 3. Foreclosed assets — Foreclosed assets include assets acquired through, or in lieu of, loan foreclosure. Foreclosed assets are held for sale and are initially recorded at fair value at the date of foreclosure, establishing a new cost basis. Subsequent to foreclosure, management periodically performs valuations and the assets are carried at the lower of carrying amount or fair value less cost to sell. When the fair value of foreclosed assets is based on an observable market price or a current appraised value which uses substantially observable data, the Company records the asset as nonrecurring Level 2. When an appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value, or the appraised value contains a significant unobservable assumption, such as deviations from comparable sales, and there is no observable market price, the Company records the foreclosed asset as nonrecurring Level 3. Revenue and expenses from operations and changes in the valuation allowance are included in other non-interest expense. Mortgage servicing rights — Mortgage servicing rights are carried at fair value. A valuation model, which utilizes a discounted cash flow analysis using a discount rate and prepayment speed assumptions is used in the computation of the fair value measurement. While the prepayment speed assumption is currently quoted for comparable instruments, the discount rate assumption currently requires a significant degree of management judgment and is therefore considered an unobservable input. As such, the Company classifies mortgage servicing rights subjected to recurring fair value adjustments as Level 3. Additional information regarding mortgage servicing rights can be found in Note 10 in the consolidated financial statements at Item 1 of this report. The tables below presents the recorded amount of assets and liabilities measured at fair value on a recurring basis (in thousands): Fair value at December 31, 2023 Total Level 1 Level 2 Level 3 Marketable equity securities $ 2,634 $ 2,634 Debt securities available for sale: Obligations of U.S. government agencies 1,221,737 1,221,737 Obligations of states and political subdivisions 236,375 236,375 Corporate bonds 5,602 5,602 Asset backed securities 355,281 355,281 Non-agency collateralized mortgage obligations 333,509 333,509 Loans held for sale 458 458 Mortgage servicing rights 6,606 6,606 Total assets measured at fair value $ 2,162,202 $ 2,634 $ 2,152,962 $ 6,606 Fair value at December 31, 2022 Total Level 1 Level 2 Level 3 Marketable equity securities $ 2,598 $ 2,598 $ — $ — Debt securities available for sale: Obligations of U.S. government agencies 1,372,769 — 1,372,769 — Obligations of states and political subdivisions 293,205 — 293,205 — Corporate bonds 5,751 — 5,751 — Asset backed securities 439,767 — 439,767 — Non-agency collateralized mortgage obligation 340,946 — 340,946 — Loans held for sale 1,846 — 1,846 — Mortgage servicing rights 6,712 — — 6,712 Total assets measured at fair value $ 2,463,594 $ 2,598 $ 2,454,284 $ 6,712 Transfers between levels of the fair value hierarchy are recognized on the actual date of the event or circumstances that caused the transfer, which generally corresponds with the Company’s quarterly valuation process. There were no transfers between any levels during 2023 or 2022. The following table provides a reconciliation of assets and liabilities measured at fair value using significant unobservable inputs (Level 3) on a recurring basis during the years ended December 31, 2023, 2022, and 2021. Had there been any transfer into or out of Level 3 during 2023, 2022, or 2021, the amount included in the “Transfers into (out of) Level 3” column would represent the beginning balance of an item in the period (interim quarter) during which it was transferred (in thousands): Year ended December 31, Beginning Transfers Change Issuances Ending 2023: Mortgage servicing rights $ 6,712 — $ (506) $ 400 $ 6,606 2022: Mortgage servicing rights $ 5,874 — $ 301 $ 537 $ 6,712 2021: Mortgage servicing rights $ 5,092 — $ (872) $ 1,654 $ 5,874 The Company’s method for determining the fair value of mortgage servicing rights is described in Note 1. The key unobservable inputs used in determining the fair value of mortgage servicing rights are mortgage prepayment speeds and the discount rate used to discount cash projected cash flows. Generally, any significant increases in the mortgage prepayment speed and discount rate utilized in the fair value measurement of the mortgage servicing rights will result in a negative fair value adjustments (and decrease in the fair value measurement). Conversely, a decrease in the mortgage prepayment speed and discount rate will result in a positive fair value adjustment (and increase in the fair value measurement). Note 10 contains additional information regarding mortgage servicing rights. The following table present quantitative information about recurring Level 3 fair value measurements at December 31, 2023 and 2022: December 31, 2023 Fair Value Valuation Unobservable Range, Mortgage Servicing Rights $6,606 Discounted Constant 6%-13%, 7% Discount rate 10%-14%, 12% December 31, 2022 Mortgage Servicing Rights $6,712 Discounted Constant 7%-14%, 8% Discount rate 10%-14%, 12% The tables below present the recorded amount of assets and liabilities measured at fair value on a nonrecurring basis, as of the dates indicated, that had a write-down or an additional allowance provided during the periods indicated. December 31, 2023 Total Level 1 Level 2 Level 3 Fair value: Individually evaluated loans $ 4,175 — — $ 4,175 Real estate owned 50 — — 50 Total assets measured at fair value $ 4,225 — — $ 4,225 December 31, 2022 Total Level 1 Level 2 Level 3 Fair value: Individually evaluated loans $ 5,719 — — $ 5,719 Real estate owned 311 — — 311 Total assets measured at fair value $ 6,030 — — $ 6,030 The tables below present the gains (losses) resulting from non-recurring fair value adjustments of assets and liabilities for the periods indicated, regardless of whether the asset is still being held at fair value at period end (in thousands): December 31, 2023 2022 Individually evaluated loans $ (4,498) $ (2,283) Real estate owned (312) 481 Total losses from non-recurring measurements $ (4,810) $ (1,802) The individually evaluated loan amount above represents collateral dependent loans with unique risk characteristics that have been adjusted to fair value. When we identify a collateral dependent loan as requiring individual evaluation, we measure the need for credit reserves using the current fair value of the collateral, less selling costs. Depending on the characteristics of a loan, the fair value of collateral is generally estimated by obtaining external appraisals. If we determine that the value of the loan is less than the recorded investment in the loan, we recognize this impairment and adjust the carrying value of the loan to fair value through the allowance for loan and lease losses. The loss represents charge-offs or impairments on collateral dependent loans for fair value adjustments based on the fair value of collateral. The carrying value of loans fully charged-off is zero. The real estate owned amounts above represents impaired real estate that has been adjusted to fair value. Foreclosed assets represent real estate which the Bank has taken control of in partial or full satisfaction of loans. At the time of foreclosure, other real estate owned is recorded at fair value less costs to sell, which becomes the property’s new basis. Any write-downs based on the asset’s fair value at the date of acquisition are charged to the allowance for loan and lease losses. After foreclosure, management periodically performs valuations such that the real estate is carried at the lower of its new cost basis or fair value, net of estimated costs to sell. Fair value adjustments on other real estate owned are recognized within net loss on real estate owned. The loss represents impairments on non-covered other real estate owned for fair value adjustments based on the fair value of the real estate. The Company’s property appraisals are primarily based on the sales comparison approach and income approach methodologies, which consider recent sales of comparable properties, including their income generating characteristics, and then make adjustments to reflect the general assumptions that a market participant would make when analyzing the property for purchase. These adjustments may increase or decrease an appraised value and can vary significantly depending on the location, physical characteristics and income producing potential of each property. Additionally, the quality and volume of market information available at the time of the appraisal can vary from period to period and cause significant changes to the nature and magnitude of comparable sale adjustments. Given these variations, comparable sale adjustments are generally not a reliable indicator for how fair value will increase or decrease from period to period. Under certain circumstances, management discounts are applied based on specific characteristics of an individual property. The following tables present quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at December 31, 2023 and 2022: December 31, 2023 Fair Value Valuation Technique Unobservable Inputs Range, Individually evaluated loans $ 4,175 Sales comparison Adjustment for differences between Not meaningful; Real estate owned (Commercial) $ 50 Sales comparison Adjustment for differences between Not meaningful; December 31, 2022 Fair Value Valuation Technique Unobservable Inputs Range, Individually evaluated loans $ 5,719 Sales comparison Adjustment for differences between Not meaningful; Real estate owned (Residential) $ 311 Sales comparison Adjustment for differences between Not meaningful; The estimated fair values of financial instruments that are reported at amortized cost in the Corporation’s consolidated balance sheets, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value, were as follows (in thousands): December 31, 2023 December 31, 2022 Carrying Fair Carrying Fair Financial assets: Level 1 inputs: Cash and due from banks $ 81,626 $ 81,626 $ 96,323 $ 96,323 Cash at Federal Reserve and other banks 17,075 17,075 10,907 10,907 Level 2 inputs: Securities held to maturity 133,494 125,126 160,983 149,938 Restricted equity securities 17,250 n/a 17,250 n/a Level 3 inputs: Loans, net 6,672,948 6,278,577 6,344,767 6,153,155 Financial liabilities: Level 2 inputs: Deposits 7,834,038 7,828,554 8,329,013 8,321,517 Other borrowings 632,582 632,582 264,605 264,605 Level 3 inputs: Junior subordinated debt 101,099 95,407 101,040 92,613 Contract Fair Contract Fair Off-balance sheet: Level 3 inputs: Commitments (1) $ 2,225,677 $ 22,257 $ 2,188,560 $ 21,886 Standby letters of credit (1) 38,449 385 26,599 266 Overdraft privilege commitments (1) 121,539 1,215 126,634 1,266 The methods and assumptions used to estimate the fair value of each class of financial instruments not measured at fair value are as follows: Securities held to maturity - This includes mortgage-backed securities issued by government sponsored entities and municipal bonds. Fair value measurement is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security’s credit rating, prepayment assumptions and other factors such as credit loss assumptions. Restricted equity securities - Consists of FHLB stock whereby carrying value approximates fair value. Loans - Loans are generally valued by discounting expected cash flows using market inputs with adjustments based on cohort level assumptions for certain loan types as well as internally developed estimates at a business segment level. Due to the significance of the unobservable market inputs and assumptions, as well as the absence of a liquid secondary market for most loans, these loans are classified as Level 3. Certain loans are measured based on observable market prices sourced from external data providers and classified as Level 2. Nonaccrual loans are written down and reported at their estimated recovery value which approximates their fair value and classified as Level 3. Deposits - The estimated fair value of deposits with no stated maturity, such as demand deposit accounts, money market accounts, and savings accounts was the amount payable on demand at the reporting date. The fair value of time deposits was estimated based on a discounted cash flow technique using Level 3 inputs appropriate to the contractual maturity. Other borrowings - The cash flows were calculated using the contractual features of the advance and then discounted using observable market. These are short-term in nature. Junior subordinated debt - The fair value of structured financings was estimated based on a discounted cash flow technique using observable market interest rates adjusted for estimated spreads.

TriCo Bancshares Condensed Fina

TriCo Bancshares Condensed Financial Statements (Parent Only)	12 Months Ended
	Dec. 31, 2023
Condensed Financial Information Disclosure [Abstract]
TriCo Bancshares Condensed Financial Statements (Parent Only)	TriCo Bancshares Condensed Financial Statements (Parent Only) Condensed Balance Sheets December 31, December 31, (In thousands) Assets Cash and cash equivalents $ 6,356 $ 7,987 Investment in Tri Counties Bank 1,253,492 1,138,429 Other assets 1,872 1,818 Total assets $ 1,261,720 $ 1,148,234 Liabilities and shareholders’ equity Other liabilities $ 939 $ 778 Junior subordinated debt 101,099 101,040 Total liabilities 102,038 101,818 Shareholders’ equity: Preferred stock, no par value: 1,000,000 shares authorized, zero issued and outstanding at December 31, 2023 and 2022 — — Common stock, no par value: authorized 50,000,000 shares; issued and outstanding 33,268,102 and 33,331,513 shares at December 31, 2023 and 2022, respectively 697,349 697,448 Retained earnings 615,502 542,873 Accumulated other comprehensive loss, net (153,169) (193,905) Total shareholders’ equity 1,159,682 1,046,416 Total liabilities and shareholders’ equity $ 1,261,720 $ 1,148,234 Condensed Statements of Income Year Ended December 31, 2023 2022 2021 (In thousands) Net interest expense $ (6,878) $ (4,385) $ (2,128) Administration expense (1,096) (816) (985) Loss before equity in net income of Tri Counties Bank (7,974) (5,201) (3,113) Equity in net income of Tri Counties Bank: Distributed 52,805 64,188 31,571 Undistributed 70,202 64,896 88,289 Income tax benefit 2,357 1,536 908 Net income $ 117,390 $ 125,419 $ 117,655 Condensed Statements of Comprehensive Income (Loss) Year Ended December 31, 2023 2022 2021 (In thousands) Net income $ 117,390 $ 125,419 $ 117,655 Other comprehensive income (loss), net of tax: Increase (decrease) in unrealized gains on available for sale securities arising during the period 41,365 (204,376) (13,788) Change in minimum pension liability (263) 8,101 2,602 Change in joint beneficiary agreement liability (366) 1,389 (113) Other comprehensive income (loss) 40,736 (194,886) (11,299) Comprehensive income (loss) $ 158,126 $ (69,467) $ 106,356 Condensed Statements of Cash Flows Year Ended December 31, 2023 2022 2021 (In thousands) Operating activities: Net income $ 117,390 $ 125,419 $ 117,655 Adjustments to reconcile net income to net cash provided by operating activities: Undistributed equity in earnings of Tri Counties Bank (70,202) (64,896) (88,289) Equity compensation vesting expense 4,125 3,869 2,638 Net change in other assets and liabilities (3,959) (3,834) (6,427) Net cash provided by operating activities 47,354 60,558 25,577 Investing activities: Sales or maturities of investments — 4,234 — Financing activities: Issuance of common stock through option exercise 156 1,190 144 Repurchase of common stock (9,240) (27,148) (4,344) Cash dividends paid — common (39,901) (35,797) (29,724) Net cash used for financing activities (48,985) (61,755) (33,924) Net change in cash and cash equivalents (1,631) 3,037 (8,347) Cash and cash equivalents at beginning of year 7,987 4,950 13,297 Cash and cash equivalents at end of year $ 6,356 $ 7,987 $ 4,950

Regulatory Matters

Regulatory Matters	12 Months Ended
	Dec. 31, 2023
Regulated Operations [Abstract]
Regulatory Matters	Regulatory Matters The Company and the Bank are subject to various regulatory capital requirements administered by federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory, and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the consolidated financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action specific capital guidelines that involve quantitative measures of assets, liabilities and certain off-balance-sheet items as calculated under regulatory accounting practices. These capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors. Quantitative measures established by regulation to ensure capital adequacy require that minimum amounts and ratios of total, Tier 1, and common equity Tier 1capital to risk-weighted assets, and of Tier 1 capital to average assets be maintained. Under applicable capital requirements both the Company and the Bank are required to have a common equity Tier 1 capital ratio of 4.5%, a Tier 1 leverage ratio of 4.0%, a Tier 1 risk-based ratio of 6.0% and a total risk-based ratio of 8.0%. In addition, the Company and the Bank are also required to maintain a capital conservation buffer consisting of common equity Tier 1 capital above 2.5% of minimum risk based capital ratios to avoid restrictions on certain activities including payment of dividends, stock repurchases and discretionary bonuses to executive officers. The additional 2.5% buffer, where applicable, is included in the minimum ratios set forth in the table below. Management believes as of December 31, 2023 and 2022, the Company and Bank meet all capital adequacy requirements to which they are subject. Actual Required for Capital Adequacy Purposes Required to be (in thousands) Amount Ratio Amount Ratio Amount Ratio As of December 31, 2023: Total Capital (to Risk Weighted Assets): Consolidated $ 1,196,106 14.73 % $ 852,850 10.50 % N/A N/A Tri Counties Bank $ 1,190,542 14.66 % $ 852,648 10.50 % $ 812,046 10.00 % Tier 1 Capital (to Risk Weighted Assets): Consolidated $ 1,052,063 12.95 % $ 690,402 8.50 % N/A N/A Tri Counties Bank $ 1,088,717 13.41 % $ 690,239 8.50 % $ 649,637 8.00 % Common equity Tier 1 Capital (to Risk Weighted Assets): Consolidated $ 994,907 12.25 % $ 568,566 7.00 % N/A N/A Tri Counties Bank $ 1,088,717 13.41 % $ 568,432 7.00 % $ 527,830 6.50 % Tier 1 Capital (to Average Assets): Consolidated $ 1,052,063 10.75 % $ 391,620 4.00 % N/A N/A Tri Counties Bank $ 1,088,717 11.12 % $ 391,574 4.00 % $ 489,468 5.00 % Actual Required for Capital Adequacy Purposes Required to be (in thousands) Amount Ratio Amount Ratio Amount Ratio As of December 31, 2022: Total Capital (to Risk Weighted Assets): Consolidated $ 1,115,257 14.19 % $ 825,234 10.50 % N/A N/A Tri Counties Bank $ 1,107,941 14.10 % $ 825,039 10.50 % $ 785,751 10.00 % Tier 1 Capital (to Risk Weighted Assets): Consolidated $ 974,325 12.40 % $ 668,047 8.50 % N/A N/A Tri Counties Bank $ 1,009,577 12.85 % $ 667,888 8.50 % $ 628,601 8.00 % Common equity Tier 1 Capital (to Risk Weighted Assets): Consolidated $ 917,565 11.67 % $ 550,156 7.00 % N/A N/A Tri Counties Bank $ 1,009,577 12.85 % $ 550,026 7.00 % $ 510,738 6.50 % Tier 1 Capital (to Average Assets): Consolidated $ 974,325 10.14 % $ 384,337 4.00 % N/A N/A Tri Counties Bank $ 1,009,577 10.51 % $ 384,146 4.00 % $ 480,183 5.00 %

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2023
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 and retail banking business in 31 California counties. 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 obtained through acquisition. 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 and its wholly-owned subsidiary. All inter-company accounts and transactions have been eliminated in consolidation. 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 included in other assets on the consolidated balance sheets. The subordinated debentures issued and guaranteed by the Company and held by the Capital Trusts are reflected as debt on the Company’s consolidated balance sheets.
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.
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. The Company currently classifies all its operation into one business segment that it denotes as community banking.
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.
Business Combinations	Business Combinations The Company accounts for acquisitions of businesses using the acquisition method of accounting. Under the acquisition method, assets acquired and liabilities assumed are recorded at their estimated fair values at the date of acquisition. Management utilizes various valuation techniques including discounted cash flow analyses to determine these fair values. Any excess of the purchase price over amounts allocated to the acquired assets, including identifiable intangible assets, and liabilities assumed is recorded as goodwill.
Cash and Cash Equivalents	Cash and Cash Equivalents For purposes of the consolidated statements of cash flows, cash and cash equivalents include cash on hand, amounts due from banks, and federal funds sold. Net cash flows are reported for loan and deposit transactions and other borrowings.
Non-Marketable and Other Equity Securities	Non-Marketable and Other Equity Securities Non-marketable and other equity securities include qualified public welfare investments and venture capital/private equity funds. Our accounting for investments in non-marketable and other equity securities depends on several factors, including the level of ownership, power to control and the legal structure of the subsidiary making the investment. We base our accounting for such securities on: (i) fair value accounting, (ii) measurement alternative for other investments without a readily determinable fair value, and (iii) equity method accounting. During the twelve months ended December 31, 2023 and 2022, the Company recognized an insignificant amount of earnings and losses in the consolidated statements of net income related to changes in the fair value of non-marketable and other equity securities.
Debt Securities	Debt Securities The Company classifies its debt securities into one of three categories: trading, available for sale or held to maturity. Trading securities are bought and held principally for the purpose of selling in the near term and changes in the value of these securities are recorded through earnings. Held to maturity securities are those securities which the Company has the ability and intent to hold until maturity. These securities are carried at cost adjusted for amortization of premium and accretion of discount, computed by the effective interest method over their contractual lives. All other securities not included in trading or held to maturity are classified as available for sale. AFS securities are recorded at fair value. Unrealized gains and losses, net of the related tax effect, on available for sale securities are reported as a separate component of other accumulated comprehensive income in shareholders’ equity until realized. Discounts are amortized or accreted over the expected life of the related investment security as an adjustment to yield using the effective interest method. Premiums on callable debt securities are generally amortized to the earliest call date of the security with the exception of mortgage backed securities, where estimated prepayments, if any, are considered. Dividend and interest income are recognized when earned. Realized gains and losses are derived from the amortized cost of the security sold. The Company did not have any debt securities classified as trading during the three year period ended December 31, 2023. The Company has made a policy election to exclude accrued interest from the amortized cost basis of debt securities and report accrued interest separately in the consolidated balance sheets. A debt security is placed on nonaccrual status at the time any principal or interest payments become more than 90 days delinquent or if full collection of interest or principal becomes uncertain. Accrued interest for a security placed on nonaccrual is reversed against interest income. There was no accrued interest related to debt securities reversed against interest income for the years ended December 31, 2023, 2022 and 2021. The Company evaluates available for sale 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. No security credit losses were recognized during the years ended December 31, 2023, 2022 or 2021. For HTM debt securities, the Company measures expected credit losses on held-to-maturity debt securities on a collective basis by major security type, then further disaggregated by sector and bond rating. Accrued interest receivable on held-to-maturity (HTM) debt securities is excluded from the estimate of credit losses. The estimate of expected credit losses considers historical credit loss information that is adjusted for current condition 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 HTM 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 during the years ended December 31, 2023, 2022 or 2021.
Restricted Equity Securities	Restricted Equity Securities Restricted equity securities represent the Company’s investment in the stock of the Federal Home Loan Bank of San Francisco (“FHLB”) and are carried at par value, which reasonably approximates its fair value. While technically these are considered equity securities, there is no market for the FHLB stock. Therefore, the shares are considered as restricted investment securities. Management periodically evaluates FHLB stock for other-than-temporary impairment. Management’s determination of whether these investments are impaired is based on its assessment of the ultimate recoverability of cost rather than by recognizing temporary declines in value. The determination of whether a decline affects the ultimate recoverability of cost is influenced by criteria such as (1) the significance of any decline in net assets of the FHLB as compared to the capital stock amount for the FHLB and the length of time this situation has persisted, (2) commitments by the FHLB to make payments required by law or regulation and the level of such payments in relation to the operating performance of the FHLB, (3) the impact of legislative and regulatory changes on institutions and, accordingly, the customer base of the FHLB, and (4) the liquidity position of the FHLB. As a member of the FHLB system, the Bank is required to maintain a minimum level of investment in FHLB stock based on specific percentages of its outstanding mortgages, total assets, or FHLB advances. The Bank may request redemption at par value of any stock in excess of the minimum required investment. Stock redemptions are at the discretion of the FHLB. Both cash and stock dividends are reported as income when received.
Loans Held for Sale	Loans Held for Sale Loans originated and intended for sale in the secondary market are carried at the lower of aggregate cost or fair value, as determined by aggregate outstanding commitments from investors of current investor yield requirements. Net unrealized losses are recognized through a valuation allowance by charges to non-interest income. Mortgage loans held for sale are generally sold with the mortgage servicing rights retained by the Company. Gains or losses on the sale of loans that are held for sale are recognized at the time of the sale and determined by the difference between net sale proceeds and the net book value of the loans less the estimated fair value of any retained mortgage servicing rights.
Loans and Allowance for Credit Losses - Loans	Loans Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at the principal amount outstanding, net of deferred loan fees and costs. Loan origination and commitment fees and certain direct loan origination costs are deferred, and the net amount is amortized as an adjustment to the related loan’s yield over the actual life of the loan. Loans on which the accrual of interest has been discontinued are designated as nonaccrual loans. 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. 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 Company measures credit losses under ASU 2016-03 Financial Instruments — Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , which replaced the incurred loss methodology, and is referred to as the current expected credit loss (CECL) methodology. The measurement of expected credit losses under the CECL methodology is applicable to financial assets measured at amortized costs, including loan receivables and held-to-maturity debt securities. The allowance for credit losses (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. Management estimates the allowance balance using relevant information, from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. The allowance for credit losses is measured on a collective (pool) basis when similar risk characteristics exist. Historical credit loss experience provides the basis for the estimation of expected credit losses, which captures loan balances as of a point in time to form a cohort, then tracks the respective losses generated by that cohort of loans over the remaining life. The Company identified and accumulated loan cohort historical loss data beginning with the fourth quarter of 2008 and through the current period. In situations where the Company's actual loss history was not statistically relevant, the loss history of peers, defined as financial institutions with assets greater than three billion and less than ten billion, were utilized to create a minimum loss rate. Adjustments to historical loss information are made for differences in relevant current loan-specific risk characteristics, such as historical timing of losses relative to the loan origination. In its loss forecasting framework, the Company incorporates forward-looking information through the use of macroeconomic scenarios applied over the forecasted life of the assets. These macroeconomic scenarios incorporate variables that have historically been key drivers of increases and decreases in credit losses. These variables include, but are not limited to changes in environmental conditions, such as California unemployment rates, household debt levels, and the pace of change in corporate bond yields. The Company also considers macroeconomic forecasts to estimate the ACL. A loan is considered to be collateral dependent when repayment is expected to be provided substantially through the operation or sale of the collateral. The ACL on collateral dependent loans is measured using the fair value of the underlying collateral, adjusted for costs to sell when applicable, less the amortized cost basis of the financial asset. If the value of underlying collateral is determined to be less than the recorded amount of the loan, a charge-off will be taken. PCD assets are assets acquired at a discount that is due, in part, to credit quality deterioration since origination which may be determined through observation of missed payments, downgrade in risk rating, deterioration of a borrower's financial trends or other observable factors including subjectivity utilized by management. PCD assets are initially recorded 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 consolidated balance sheets, while the allowance for acquired non-PCD assets, such as loans, is recorded through the provision for credit losses on the consolidated statements of income, 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. The Company has identified the following portfolio segments to evaluate and measure the allowance for credit loss: Commercial real estate : • Commercial real estate - Non-owner occupied: These commercial properties typically consist of buildings which are leased to others for their use and rely on rents as the primary source of repayment. Property types are predominantly office, retail, or light industrial but the portfolio also has some special use properties. As such, the risk of loss associated with these properties is primarily driven by general economic changes or changes in regional economies and the impact of such on a tenant’s ability to pay. Ultimately this can affect occupancy, rental rates, or both. Additional risk of loss can come from new construction resulting in oversupply, the costs to hold or operate the property, or changes in interest rates. The terms on these loans at origination typically have maturities from five fifteen • Commercial real estate - Owner occupied: These credits are primarily susceptible to changes in the financial condition of the business operated by the property owner. This may be driven by changes in, among other things, industry challenges, factors unique to the operating geography of the borrower, change in the individual fortunes of the business owner, general economic conditions and changes in business cycles. When default is driven by issues related specifically to the business owner, collateral values tend to provide better repayment support and may result in little or no loss. Alternatively, when default is driven more by general economic conditions, the underlying collateral may have devalued more and thus result in larger losses in the event of default. The terms on these loans at origination typically have maturities from five fifteen • Multifamily: These commercial properties are generally comprised of more than four rentable units, such as apartment buildings, with each unit intended to be occupied as the primary residence for one or more persons. Multifamily properties are also subject to changes in general or regional economic conditions, such as unemployment, ultimately resulting in increased vacancy rates or reduced rents or both. In addition, new construction can create an oversupply condition and market competition resulting in increased vacancy, reduced market rents, or both. Due to the nature of their use and the greater likelihood of tenant turnover, the management of these properties is more intensive and therefore is more critical to the preclusion of loss. • Farmland: While the Company has few loans that were originated for the purpose of the acquisition of these commercial properties, loans secured by farmland represent unique risks that are associated with the operation of an agricultural businesses. The valuation of farmland can vary greatly over time based on the property's access to resources including but not limited to water, crop prices, foreign exchange rates, government regulation or restrictions, and the nature of ongoing capital investment needed to maintain the quality of the property. Loans secured by farmland typically represent less risk to the Company than other agriculture loans as the real estate typically provides greater support in the event of default or need for longer term repayment. Consumer loans : • SFR 1-4 1st DT Liens: The most significant drivers of potential loss within the Company's residential real estate portfolio relate general, regional, or individual changes in economic conditions and their effect on employment and borrowers cash flow. Risk in this portfolio is best measured by changes in borrower credit score and loan-to-value. Loss estimates are based on the general movement in credit score, economic outlook and its effects on employment and the value of homes and the Bank’s historical loss experience adjusted to reflect the economic outlook and the unemployment rate. • SFR HELOCs and Junior Liens: Similar to residential real estate term loans, HELOCs and junior liens performance is also primarily driven by borrower cash flows based on employment status. However, HELOCs carry additional risks associated with the fact that most of these loans are secured by a deed of trust in a position that is junior to the primary lien holder. Furthermore, the risk that as the borrower's financial strength deteriorates, the outstanding balance on these credit lines may increase as they may only be canceled by the Company if certain limited criteria are met. In addition to the allowance for credit losses maintained as a percent of the outstanding loan balance, the Company maintains additional reserves for the unfunded portion of the HELOC. • Other: The majority of these consumer loans are secured by automobiles, with the remainder primarily unsecured revolving debt (credit cards). These loans are susceptible to three primary risks; non-payment due to income loss, over-extension of credit and, when the borrower is unable to pay, shortfall in collateral value, if any. Typically, non-payment is due to loss of job and will follow general economic trends in the marketplace driven primarily by rises in the unemployment rate. Loss of collateral value can be due to market demand shifts, damage to collateral itself or a combination of those factors. Credit card loans are unsecured and while collection efforts are pursued in the event of default, there is typically limited opportunity for recovery. Loss estimates are based on the general movement in credit score, economic outlook and its effects on employment and the Bank’s historical loss experience adjusted to reflect the economic outlook and the unemployment rate. Commercial and industrial: • Repayment of these loans is primarily based on the cash flow of the borrower, and secondarily on the underlying collateral provided by the borrower. A borrower's cash flow may be unpredictable, and collateral securing these loans may fluctuate in value. Most often, collateral includes accounts receivable, inventory, or equipment. Collateral securing these loans may depreciate over time, may be difficult to appraise, may be illiquid and may fluctuate in value based on the success of the business. Actual and forecast changes in gross domestic product are believed to be corollary to losses associated with these credits. Construction : • While secured by real estate, construction loans represent a greater level of risk than term real estate loans due to the nature of the additional risks associated with the not only the completion of construction within an estimated time period and budget, but also the need to either sell the building or reach a level of stabilized occupancy sufficient to generate the cash flows necessary to support debt service and operating costs. The Company seeks to mitigate the additional risks associated with construction lending by requiring borrowers to comply with lower loan to value ratios and additional covenants as well as strong tertiary support of guarantors. The loss forecasting model applies the historical rate of loss for similar loans over the expected life of the asset as adjusted for macroeconomic factors. Agriculture production: • Repayment of agricultural loans is dependent upon successful operation of the agricultural business, which is greatly impacted by factors outside the control of the borrower. These factors include adverse weather conditions, including access to water, that may impact crop yields, loss of livestock due to disease or other factors, declines in market prices for agriculture products, changes in foreign exchange, and the impact of government regulations. In addition, many farms are dependent on a limited number of key individuals whose injury or death may significantly affect the successful operation of the business. Consequently, agricultural production loans may involve a greater degree of risk than other types of loans. Leases: • The loss forecasting model applies the historical rate of loss for similar loans over the expected life of the asset. Leases typically represent an elevated level of credit risk as compared to loans secured by real estate as the collateral for leases is often subject to a more rapid rate of depreciation or depletion. The ultimate severity of loss is impacted by the type of collateral securing the exposure, the size of the exposure, the borrower’s industry sector, any guarantors and the geographic market. Assumptions of expected loss are conditioned to the economic outlook and the other variables discussed above. Unfunded commitments : • The estimated credit losses associated with these unfunded lending commitments is calculated using the same models and methodologies noted above and incorporate utilization assumptions at time of default. The reserve for unfunded commitments is maintained on the consolidated balance sheet in other liabilities.
Real Estate Owned	Real Estate Owned Real estate owned (REO) includes assets acquired through, or in lieu of, loan foreclosure. REO is held for sale and are initially recorded at fair value less estimated costs to sell at the date of acquisition, establishing a new cost basis. Physical possession of residential real estate property collateralizing a consumer mortgage loan occurs when legal title is obtained upon completion of foreclosure or when the borrower conveys all interest in the property to satisfy the loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Any write-downs based on the asset’s fair value less costs to sell at the date of acquisition are charged to the allowance for loan and lease losses. Any recoveries based on the asset’s fair value less estimated costs to sell in excess of the recorded value of the loan at the date of acquisition are recorded to the allowance for loan and lease losses. These assets are subsequently accounted for at lower of cost or fair value less estimated costs to sell. If fair value declines subsequent to foreclosure, a valuation allowance is recorded through expense. Operating costs after acquisition are expensed. Revenue and expenses from operations and changes in the valuation allowance are included in other non-interest expense, along with the gain or loss on sale of REO.
Premises and Equipment	Premises and Equipment Land is carried at cost. Land improvements, buildings and equipment, including those acquired under capital lease, are stated at cost less accumulated depreciation and amortization. Depreciation and amortization expenses are computed using the straight-line method over the shorter of the estimated useful lives of the related assets or lease terms. Asset lives range from 3-10 years for furniture and equipment and 15-40 years for land improvements and buildings.
Company Owned Life Insurance	Company Owned Life Insurance The Company has purchased life insurance policies on certain key executives. Company owned life insurance is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other charges or other amounts due that are probable at settlement. As a result of current tax law and the nature of these policies, the Bank records any increase in cash value of these policies as nontaxable non-interest income. If the Bank decided to surrender any of the policies prior to the death of the insured, such surrender may result in a tax expense related to the life-to-date cumulative increase in cash value of the policy. If the Bank retains such policies until the death of the insured, the Bank would receive nontaxable proceeds from the insurance company equal to the death benefit of the policies. The Bank has entered into Joint Beneficiary Agreements (JBAs) with certain of the insured that provide some level of sharing of the death benefit, less the cash surrender value, among the Bank and the beneficiaries of the insured upon the receipt of death benefits.
Goodwill, Other Intangible and Long-Lived Assets	Goodwill, Other Intangible and Long-Lived Assets Goodwill represents the excess of costs over fair value of net assets of businesses acquired from a business combination. The Company has an identifiable intangible asset consisting of core deposit intangibles (“CDI”). CDI are amortized over their respective estimated useful lives and reviewed periodically for impairment. Goodwill and other intangible assets acquired in a business combination and determined to have an indefinite useful life are not amortized, but instead tested for impairment at least annually. Other intangible assets with estimable useful lives are amortized over their respective estimated useful lives to their estimated residual values, and reviewed periodically for impairment. As of September 30 of each year, goodwill is tested for impairment, and is tested for impairment more frequently if events and circumstances indicate that the asset might be impaired. An impairment loss is recognized to the extent that the carrying amount exceeds the asset’s fair value. Long-lived assets, such as premises and equipment, and purchased intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized by the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of would be separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell, and are no longer depreciated. The assets and liabilities of a disposed group classified as held for sale would be presented separately in the appropriate asset and liability sections of the consolidated balance sheet.
Mortgage Servicing Rights	Mortgage Servicing Rights Mortgage servicing rights (“MSR”) represent the Company’s right to a future stream of cash flows based upon the contractual servicing fee associated with servicing mortgage loans. Our MSR arise from residential and commercial mortgage loans that we originate and sell, but retain the right to service the loans. The net gain from the retention of the servicing right is included in gain on sale of loans in non-interest income when the loan is sold. Fair value is based on market prices for comparable mortgage servicing contracts, when available, or alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the cost to service, the discount rate, the custodial earnings rate, an inflation rate, ancillary income, prepayment speeds and default rates and losses. Servicing fees, when earned, and changes in fair value of the MSR, are recorded in non-interest income. The Company accounts for MSR at fair value. The determination of fair value of our MSR requires management judgment because they are not actively traded. The determination of fair value for MSR requires valuation processes which combine the use of discounted cash flow models and extensive analysis of current market data to arrive at an estimate of fair value. The cash flow and prepayment assumptions used in our discounted cash flow model are based on empirical data drawn from the historical performance of our MSR, which we believe are consistent with assumptions used by market participants valuing similar MSR, and from data obtained on the performance of similar MSR. The key assumptions used in the valuation of MSR include mortgage prepayment speeds and the discount rate. These variables can, and generally will, change from quarter to quarter as market conditions and projected interest rates change. The key risks inherent with MSR are prepayment speed and changes in interest rates.
Leases	Leases The Company records a right-of-use asset (“ROUA”) on the consolidated balance sheets for those leases that convey rights to control use of identified assets for a period of time in exchange for consideration. The Company is also required to record a lease liability on the consolidated balance sheets for the present value of future payment commitments. Substantially all of the Company’s leases are comprised of operating leases in which the Company is lessee of real estate property for branches, ATM locations, and general administration and operations. The Company has elected not to include short-term leases (i.e. leases with initial terms of twelve months or less) within the ROUA and lease liability. Known or determinable adjustments to the required minimum future lease payments are included in the calculation of the Company’s ROUA and lease liability. Adjustments to the required minimum future lease payments that are variable and will not be determinable until a future period, such as changes in the consumer price index, are included as variable lease costs. Additionally, expected variable payments for common area maintenance, taxes and insurance are not unknown and not determinable at lease commencement and therefore, are not included in the determination of the Company’s ROUA or lease liability.
Off-Balance Sheet Credit Related Financial Instruments	Off-Balance Sheet Credit Related Financial Instruments In the ordinary course of business, the Company has entered into commitments to extend credit, including commitments under credit card arrangements, commercial letters of credit, and standby letters of credit. Such financial instruments are recorded when they are funded.
Low Income Housing Tax Credits	Low Income Housing Tax Credits The Company accounts for low income housing tax credits and the related qualified affordable housing projects using the proportional amortization method. Under the proportional amortization method, the Company amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense (benefit). Upon entering into a qualified affordable housing project, the Company records, in other liabilities, the entire amount that it has agreed to invest in the project, and an equal amount, in other assets, representing its investment in the project. As the Company disburses cash to satisfy its investment obligation, other liabilities are reduced. Over time, as the tax credits and other tax benefits of the project are realized by the Company, the investment recorded in other assets is reduced using the proportional amortization method.
Income Taxes	Income Taxes The Company’s accounting for income taxes is based on an asset and liability approach. The Company recognizes the amount of taxes payable or refundable for the current year, and deferred tax assets and liabilities for the future tax consequences that have been recognized in its financial statements or tax returns. The measurement of tax assets and liabilities is based on the provisions of enacted tax laws. A valuation allowance, if needed, reduces deferred tax assets to the expected amount most likely to be realized. Realization of deferred tax assets is dependent upon the generation of a sufficient level of future taxable income and recoverable taxes paid in prior years. Although realization is not assured, management believes it is more likely than not that all of the deferred tax assets will be realized. A tax position is recognized as a benefit only if it is “more likely than not” that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. For tax positions not meeting the “more likely than not” test, no tax benefit is recorded. Interest and/or penalties related to income taxes are reported as a component of non-interest income.
Share-Based Compensation	Share-Based Compensation Compensation cost is recognized for stock options and restricted stock awards issued to employees and directors, based on the fair value of the awards at the date of grant. The estimate of the fair value of stock options and performance based restricted awards are based on a Black-Scholes or Monte Carlo model, respectively, while the market price of the common stock at the date of grant is used for time based restricted awards. Compensation cost is recognized over the required service period, generally defined as the vesting or measurement period. The Company’s accounting policy is to recognize forfeitures as they occur.
Earnings per Share	Earnings per Share Basic earnings per share represents income available to common shareholders divided by the weighted-average number of common shares outstanding during the period. There are no unvested share-based payment awards that contain rights to nonforfeitable dividends (participating securities). Diluted earnings per share reflects additional common shares that would have been outstanding if dilutive potential common shares had been issued, as well as any adjustments to income that would result from assumed issuance. Potential common shares that may be issued by the Company relate solely from outstanding stock options and restricted stock units, and are determined using the treasury stock method.
Revenue Recognition	Revenue Recognition The Company records revenue from contracts with customers in accordance with Accounting Standards Codification Topic 606, “Revenue from Contracts with Customers” (“Topic 606”). Under Topic 606, the Company must identify the contract with a customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract, and recognize revenue when (or as) the Company satisfies a performance obligation. Most of our revenue-generating transactions are not subject to Topic 606, including revenue generated from financial instruments, such as our loans and investment securities. In addition, certain non-interest income streams such as fees associated with mortgage servicing rights, financial guarantees, derivatives, and certain credit card fees are also not in scope of the new guidance. The Company’s non-interest revenue streams are largely based on transactional activity, or standard month-end revenue accruals such as asset management fees based on month-end market values. Consideration is often received immediately or shortly after the Company satisfies its performance obligation and revenue is recognized. The Company does not typically enter into long-term revenue contracts with customers, and therefore, does not experience significant contract balances. As of December 31, 2023 and December 31, 2022, the Company did not have any significant contract balances. The Company has evaluated the nature of its revenue streams and determined that further disaggregation of revenue into more granular categories beyond what is presented in Note 18 was not necessary. The following are descriptions of revenues within the scope of ASC 606. Deposit service charges The Company earns fees from its deposit customers for account maintenance, transaction-based and overdraft services. Account maintenance fees consist primarily of account fees and analyzed account fees charged on deposit accounts on a monthly basis. The performance obligation is satisfied and the fees are recognized on a monthly basis as the service period is completed. Transaction-based fees on deposit accounts are charged to deposit customers for specific services provided to the customer, such as non-sufficient funds fees, overdraft fees, and wire fees. The performance obligation is completed as the transaction occurs and the fees are recognized at the time each specific service is provided to the customer. Debit and ATM interchange fees Debit and ATM interchange income represent fees earned when a debit card issued by the Company is used. The Company earns interchange fees from debit cardholder transactions through the Visa payment network. Interchange fees from cardholder transactions represent a percentage of the underlying transaction value and are recognized daily, concurrently with the transaction processing services provided to the cardholder. The performance obligation is satisfied and the fees are earned when the cost of the transaction is charged to the cardholders’ debit card. Certain expenses directly associated with the credit and debit card are recorded on a net basis with the interchange income. Commission on sale of non-deposit investment products Commissions on sale of non-deposit investment products consist of fees earned from advisory asset management, trade execution and administrative fees from investments. Advisory asset management fees are variable, since they are based on the underlying portfolio value, which is subject to market conditions and asset flows. Advisory asset management fees are recognized quarterly and are based on the portfolio values at the end of each quarter. Brokerage accounts are charged commissions at the time of a transaction and the commission schedule is based upon the type of security and quantity. In addition, revenues are earned from selling insurance and annuity policies. The amount of revenue earned is determined by the value and type of each instrument sold and is recognized at the time the policy or contract is written. Merchant fee income Merchant fee income represents fees earned by the Company for card payment services provided to its merchant customers. The Company outsources these services to a third party to provide card payment services to these merchants. The third party provider passes the payments made by the merchants through to the Company. The Company, in turn, pays the third party provider for the services it provides to the merchants. These payments to the third party provider are recorded as expenses as a net reduction against fee income. In addition, a portion of the payment received represents interchange fees which are passed through to the card issuing bank. Income is primarily earned based on the dollar volume and number of transactions processed. The performance obligation is satisfied and the related fee is earned when each payment is accepted by the processing network. Gain/loss on other real estate owned, net The Company records a gain or loss from the sale of other real estate owned when control of the property transfers to the buyer, which generally occurs at the time of an executed deed of trust. When the Company finances the sale of other real estate owned to the buyer, the Company assesses whether the buyer is committed to perform their obligations under the contract and whether collectability of the transaction price is probable. Once these criteria are met, the other real estate owned asset is derecognized and the gain or loss on sale is recorded upon the transfer of control of the property to the buyer. In determining the gain or loss on sale, the Company adjusts the transaction price and related gain or loss on sale if a significant financing component is present. Gains or losses from transactions associated with other real estate owned are recorded as a component of non-interest expense.
Reclassifications	Reclassifications Certain amounts reported in previous consolidated financial statements have been reclassified and recalculated to conform to the presentation in this report. These reclassifications did not affect previously reported amounts of net income, total assets or total shareholders’ equity.
Accounting Standards Adopted in 2022 and Accounting Standards Pending Adoption	Accounting Standards Adopted in 2023 In March 2022, the FASB issued ASU 2022-02, Financial Instruments — Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures. The amendments in this Update eliminated the TDR recognition and measurement guidance and, instead, required that an entity evaluate (consistent with the accounting for other loan modifications) whether the modification represents a new loan or a continuation of an existing loan. The amendments also enhanced existing disclosure requirements and introduced new requirements related to certain modifications of receivables made to borrowers experiencing financial difficulty. Furthermore, the amendments in this Update required that an entity disclose current-period gross write-offs by year of origination for financing receivables and net investment in leases within the scope of Subtopic 326-20. The Company adopted these amendments on January 1, 2023 and has observed no significant impact on the consolidated financial statements. Accounting Standards Pending Adoption FASB issued ASU 2023-09, Improvements to Income Tax Disclosures. This ASU was issued to enhance the transparency and decision usefulness of income tax disclosures, primarily related to the rate reconciliation and income taxes paid information. This ASU is effective for fiscal years beginning after December 15, 2024. The adoption of this accounting guidance is not expected to have a material impact on the Company’s consolidated financial statements but will result in the expansion of the income tax disclosures. FASB issued ASU 2023-07, Segment Reporting: Improvements to Reportable Segment Disclosures. This ASU was issued to address stakeholder requests for more detailed information about expenses within each reportable segment and address disclosure requirements there within. The amendments retain existing disclosure requirements, and expand upon them for both interim and annual reporting periods. In addition, entities with a single reportable segment must now provide all segment disclosures required, including the new disclosure requirements. This ASU is effective for fiscal years beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. The adoption of this accounting guidance is not expected to have a material impact on the Company’s consolidated financial statements but will result in inclusion of certain segment reporting requirements not previously required. FASB issued ASU 2023-06, Disclosure Improvements - Codification Amendments in Response to the SEC's Disclosure Update and Simplification Initiative. This ASU was issued to incorporate 14 of the 27 simplification disclosures released by the SEC which overlapped with existing, but required incremental information to, GAAP to the FASB for incorporation into the Codification. The timing of these amendments will coincide with the effective dates of changes by the SEC in Regulations S-X or S-K. The adoption of this accounting guidance is not expected to have a material impact on the Company’s consolidated financial statements. FASB issued ASU 2023-02, Investments – Equity Method and Joint Ventures: Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method. This ASU permits reporting entities to elect to account for their tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. This ASU is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2023. The adoption of this accounting guidance is not expected to have a material impact on the Company’s consolidated financial statements.

Business Combinations (Tables)

Business Combinations (Tables)	12 Months Ended
	Dec. 31, 2023
Business Combinations [Abstract]
Schedule of Fair Value of Consideration Transferred, Assets Acquired and Liabilities Assumed	The following table summarizes the consideration paid for VRB and the amounts of assets acquired and liabilities assumed that were recorded at the acquisition date (in thousands): Fair Value as of Fair value of consideration transferred: Fair value of shares issued $ 173,585 Cash consideration 431 Total fair value of consideration transferred 174,016 Assets acquired: Cash and cash equivalents 427,314 Securities available for sale 109,716 Loans and leases 771,353 Premises and equipment 4,658 Cash value of life insurance 13,609 Core deposit intangible 10,635 Other assets 29,744 Total assets acquired 1,367,029 Liabilities assumed: Deposits (1,215,479) Subordinated debt (47,236) SERP liability (3,352) Other liabilities (10,516) Total liabilities assumed (1,276,583) Total net assets acquired 90,446 Goodwill recognized $ 83,570

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Amortized Cost and Estimated Fair Values of Investments Securities	The amortized cost and estimated fair values of investment securities classified as available for sale and held to maturity are summarized in the following tables: December 31, 2023 Amortized Gross Gross Estimated (in thousands) Debt Securities Available for Sale Obligations of U.S. government agencies $ 1,386,772 $ 2 $ (165,037) $ 1,221,737 Obligations of states and political subdivisions 262,879 268 (26,772) 236,375 Corporate bonds 6,173 — (571) 5,602 Asset backed securities 359,214 255 (4,188) 355,281 Non-agency collateralized mortgage obligations 369,287 — (35,778) 333,509 Total debt securities available for sale $ 2,384,325 $ 525 $ (232,346) $ 2,152,504 Debt Securities Held to Maturity Obligations of U.S. government agencies $ 130,823 $ — $ (8,331) $ 122,492 Obligations of states and political subdivisions 2,671 6 (43) 2,634 Total debt securities held to maturity $ 133,494 $ 6 $ (8,374) $ 125,126 December 31, 2022 Amortized Gross Gross Estimated (in thousands) Debt Securities Available for Sale Obligations of U.S. government agencies $ 1,568,408 $ 3 $ (195,642) $ 1,372,769 Obligations of states and political subdivisions 332,625 401 (39,821) 293,205 Corporate bonds 6,164 — (413) 5,751 Asset backed securities 454,943 17 (15,193) 439,767 Non-agency collateralized mortgage obligations 380,847 — (39,901) 340,946 Total debt securities available for sale $ 2,742,987 $ 421 $ (290,970) $ 2,452,438 Debt Securities Held to Maturity Obligations of U.S. government agencies $ 154,830 $ 2 $ (11,013) $ 143,819 Obligations of states and political subdivisions 6,153 13 (47) 6,119 Total debt securities held to maturity $ 160,983 $ 15 $ (11,060) $ 149,938
Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity	December 31, 2023 Available for Sale Held to Maturity (In thousands) Amortized Estimated Amortized Estimated Due in one year $ 83,239 $ 81,775 $ — $ — Due after one year through five years 47,769 44,932 5,829 5,640 Due after five years through ten years 367,733 354,333 89,070 83,726 Due after ten years 1,885,584 1,671,464 38,595 35,760 Totals $ 2,384,325 $ 2,152,504 $ 133,494 $ 125,126
Gross Unrealized Losses on Investment Securities	Gross unrealized losses on investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, were as follows: Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized December 31, 2023 (in thousands) Debt Securities Available for Sale Obligations of U.S. government agencies $ 224 $ — $ 1,221,320 $ (165,037) $ 1,221,544 $ (165,037) Obligations of states and political subdivisions 6,229 (75) 216,497 (26,697) 222,726 (26,772) Corporate bonds — — 5,602 (571) 5,602 (571) Asset backed securities 15,928 (93) 264,731 (4,095) 280,659 (4,188) Non-agency collateralized mortgage obligations 44,276 (583) 289,233 (35,195) 333,509 (35,778) Total debt securities available for sale $ 66,657 $ (751) $ 1,997,383 $ (231,595) $ 2,064,040 $ (232,346) Debt Securities Held to Maturity Obligations of U.S. government agencies $ — $ — $ 122,259 $ (8,331) $ 122,259 $ (8,331) Obligations of states and political subdivisions — — 1,012 (43) 1,012 (43) Total debt securities held to maturity $ — $ — $ 123,271 $ (8,374) $ 123,271 $ (8,374) Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized December 31, 2022 (in thousands) Debt Securities Available for Sale Obligations of U.S. government agencies $ 766,612 $ (134,234) $ 605,615 $ (61,408) $ 1,372,227 $ (195,642) Obligations of states and political subdivisions 43,282 (12,917) 219,532 (26,904) 262,814 (39,821) Corporate bonds — — 5,751 (413) 5,751 (413) Asset backed securities 205,329 (10,238) 231,703 (4,955) 437,032 (15,193) Non-agency collateralized mortgage obligations 203,620 (36,480) 123,075 (3,421) 326,695 (39,901) Total securities available for sale $ 1,218,843 $ (193,869) $ 1,185,676 $ (97,101) $ 2,404,519 $ (290,970) Debt Securities Held to Maturity Obligations of U.S. government agencies $ — $ — $ 143,577 $ (11,013) $ 143,577 $ (11,013) Obligations of states and political subdivisions — — 4,530 (47) 4,530 (47) Total debt securities held to maturity $ — $ — $ 148,107 $ (11,060) $ 148,107 $ (11,060)
Amortized Cost of Debt Securities Held-to-Maturity	Gross unrealized losses on investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, were as follows: Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized December 31, 2023 (in thousands) Debt Securities Available for Sale Obligations of U.S. government agencies $ 224 $ — $ 1,221,320 $ (165,037) $ 1,221,544 $ (165,037) Obligations of states and political subdivisions 6,229 (75) 216,497 (26,697) 222,726 (26,772) Corporate bonds — — 5,602 (571) 5,602 (571) Asset backed securities 15,928 (93) 264,731 (4,095) 280,659 (4,188) Non-agency collateralized mortgage obligations 44,276 (583) 289,233 (35,195) 333,509 (35,778) Total debt securities available for sale $ 66,657 $ (751) $ 1,997,383 $ (231,595) $ 2,064,040 $ (232,346) Debt Securities Held to Maturity Obligations of U.S. government agencies $ — $ — $ 122,259 $ (8,331) $ 122,259 $ (8,331) Obligations of states and political subdivisions — — 1,012 (43) 1,012 (43) Total debt securities held to maturity $ — $ — $ 123,271 $ (8,374) $ 123,271 $ (8,374) Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized December 31, 2022 (in thousands) Debt Securities Available for Sale Obligations of U.S. government agencies $ 766,612 $ (134,234) $ 605,615 $ (61,408) $ 1,372,227 $ (195,642) Obligations of states and political subdivisions 43,282 (12,917) 219,532 (26,904) 262,814 (39,821) Corporate bonds — — 5,751 (413) 5,751 (413) Asset backed securities 205,329 (10,238) 231,703 (4,955) 437,032 (15,193) Non-agency collateralized mortgage obligations 203,620 (36,480) 123,075 (3,421) 326,695 (39,901) Total securities available for sale $ 1,218,843 $ (193,869) $ 1,185,676 $ (97,101) $ 2,404,519 $ (290,970) Debt Securities Held to Maturity Obligations of U.S. government agencies $ — $ — $ 143,577 $ (11,013) $ 143,577 $ (11,013) Obligations of states and political subdivisions — — 4,530 (47) 4,530 (47) Total debt securities held to maturity $ — $ — $ 148,107 $ (11,060) $ 148,107 $ (11,060) December 31, 2023 December 31, 2022 AAA/AA/A BBB/BB/B AAA/AA/A BBB/BB/B (In thousands) (In thousands) Debt Securities Held to Maturity Obligations of U.S. government agencies $ 130,823 $ — $ 154,830 $ — Obligations of states and political subdivisions 2,671 — 6,153 — Total debt securities held to maturity $ 133,494 $ — $ 160,983 $ —

Loans (Tables)

Loans (Tables)	12 Months Ended
	Dec. 31, 2023
Receivables [Abstract]
Summary of Loan Balances	A summary of loan balances follows: (in thousands) December 31, 2023 December 31, 2022 Commercial real estate: CRE non-owner occupied $ 2,217,806 $ 2,149,725 CRE owner occupied 956,440 984,807 Multifamily 949,502 944,537 Farmland 271,054 280,014 Total commercial real estate loans 4,394,802 4,359,083 Consumer: SFR 1-4 1st DT liens 883,438 790,349 SFR HELOCs and junior liens 356,813 393,666 Other 73,017 56,728 Total consumer loans 1,313,268 1,240,743 Commercial and industrial 586,455 569,921 Construction 347,198 211,560 Agriculture production 144,497 61,414 Leases 8,250 7,726 Total loans, net of deferred loan fees and discounts $ 6,794,470 $ 6,450,447 Total principal balance of loans owed, net of charge-offs $ 6,834,935 $ 6,496,210 Unamortized net deferred loan fees (15,826) (15,275) Discounts to principal balance of loans owed, net of charge-offs (24,639) (30,488) Total loans, net of unamortized deferred loan fees and discounts $ 6,794,470 $ 6,450,447 Allowance for credit losses $ (121,522) $ (105,680)

Allowance for Credit Losses (Ta

Allowance for Credit Losses (Tables)	12 Months Ended
	Dec. 31, 2023
Allowance For Loan And Lease Losses [Abstract]
Components of Allowance for Credit Losses	The table below sets forth the components of the Company’s allowance for credit losses as of the dates indicated: (dollars in thousands) December 31, 2023 December 31, 2022 Allowance for credit losses: Qualitative and forecast factor allowance $ 84,291 $ 70,777 Quantitative (Cohort) model allowance 34,139 32,489 Total allowance for credit losses 118,430 103,266 Allowance for individually evaluated loans 3,092 2,414 Total allowance for credit losses $ 121,522 $ 105,680
Summary of Loans and Leases Purchased and Acquired with Credit Deterioration	The following table provides a summary of loans and leases purchased as part of the VRB acquisition with credit deterioration (PCD) at acquisition: As of March 25, 2022 (in thousands) Commercial Real Estate Consumer Commercial and Industrial Construction Agriculture Production Total Par value $ 27,237 $ 3,877 $ 2,674 $ 25,645 $ 9,080 $ 68,513 ACL at acquisition (1,573) (144) (81) (201) (38) (2,037) Non-credit discount (2,305) (360) (47) (232) (12) (2,956) Purchase price $ 23,359 $ 3,373 $ 2,546 $ 25,212 $ 9,030 $ 63,520
Summary of Activity in Allowance for Loan Losses, and Ending Balance of Loans, Net of Unearned Fees for Periods Indicated	The following tables summarize the activity in the allowance for credit losses, and ending balance of loans, net of unearned fees for the periods indicated. Allowance for Credit Losses – December 31, 2023 (in thousands) Beginning Charge-offs Recoveries Provision for Ending Commercial real estate: CRE non-owner occupied $ 30,962 $ — $ — $ 4,115 $ 35,077 CRE owner occupied 14,014 (3,637) 2 4,702 15,081 Multifamily 13,132 — — 1,286 14,418 Farmland 3,273 — — 1,015 4,288 Total commercial real estate loans 61,381 (3,637) 2 11,118 68,864 Consumer: SFR 1-4 1st DT liens 11,268 — 262 2,479 14,009 SFR HELOCs and junior liens 11,413 (66) 723 (1,797) 10,273 Other 1,958 (558) 190 1,581 3,171 Total consumer loans 24,639 (624) 1,175 2,263 27,453 Commercial and industrial 13,597 (3,879) 316 2,716 12,750 Construction 5,142 — — 3,714 8,856 Agriculture production 906 — 34 2,649 3,589 Leases 15 — — (5) 10 Allowance for credit losses on loans 105,680 (8,140) 1,527 22,455 121,522 Reserve for unfunded commitments 4,315 — — 1,535 5,850 Total $ 109,995 $ (8,140) $ 1,527 $ 23,990 $ 127,372 Allowance for Credit Losses – December 31, 2022 (in thousands) Beginning ACL on PCD Loans Charge-offs Recoveries Provision for Ending Commercial real estate: CRE non-owner occupied $ 25,739 $ 746 $ — $ 1 $ 4,476 $ 30,962 CRE owner occupied 10,691 63 — 2 3,258 14,014 Multifamily 12,395 — — — 737 13,132 Farmland 2,315 764 (294) — 488 3,273 Total commercial real estate loans 51,140 1,573 (294) 3 8,959 61,381 Consumer: SFR 1-4 1st DT liens 10,723 144 — 79 322 11,268 SFR HELOCs and junior liens 10,510 — (22) 429 496 11,413 Other 2,241 — (572) 235 54 1,958 Total consumer loans 23,474 144 (594) 743 872 24,639 Commercial and industrial 3,862 81 (697) 1,157 9,194 13,597 Construction 5,667 201 — — (726) 5,142 Agriculture production 1,215 38 — 4 (351) 906 Leases 18 — — — (3) 15 Allowance for credit losses on loans 85,376 2,037 (1,585) 1,907 17,945 105,680 Reserve for unfunded commitments 3,790 — — — 525 4,315 Total $ 89,166 $ 2,037 $ (1,585) $ 1,907 $ 18,470 $ 109,995 Allowance for Credit Losses – December 31, 2021 (in thousands) Beginning Charge-offs Recoveries Provision for Ending Commercial real estate: CRE non-owner occupied $ 29,380 $ — $ 12 $ (3,653) $ 25,739 CRE owner occupied 10,861 (18) 794 (946) 10,691 Multifamily 11,472 — — 923 12,395 Farmland 1,980 (126) — 461 2,315 Total commercial real estate loans 53,693 (144) 806 (3,215) 51,140 Consumer: SFR 1-4 1st DT liens 10,117 (145) 13 738 10,723 SFR HELOCs and junior liens 11,771 (29) 1,127 (2,359) 10,510 Other 3,260 (577) 361 (803) 2,241 Total consumer loans 25,148 (751) 1,501 (2,424) 23,474 Commercial and industrial 4,252 (1,470) 755 325 3,862 Construction 7,540 (27) — (1,846) 5,667 Agriculture production 1,209 — 24 (18) 1,215 Leases 5 — — 13 18 Allowance for credit losses on loans 91,847 (2,392) 3,086 (7,165) 85,376 Reserve for unfunded commitments 3,400 — — 390 3,790 Total $ 95,247 $ (2,392) $ 3,086 $ (6,775) $ 89,166
Schedule Credit Quality Indicators	The following tables present ending loan balances by loan category and risk grade for the periods indicated: Term Loans Amortized Cost Basis by Origination Year - As of December 31, 2023 (in thousands) 2023 2022 2021 2020 2019 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Commercial real estate: CRE non-owner occupied risk ratings Pass $ 180,326 $ 413,863 $ 290,210 $ 137,656 $ 206,408 $ 792,875 $ 141,686 $ — $ 2,163,024 Special Mention — 1,329 — 5,281 17,093 14,174 1,247 — 39,124 Substandard — — 767 — 2,139 12,540 212 — 15,658 Doubtful/Loss — — — — — — — — — Total CRE non-owner occupied risk ratings $ 180,326 $ 415,192 $ 290,977 $ 142,937 $ 225,640 $ 819,589 $ 143,145 $ — $ 2,217,806 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Commercial real estate: CRE owner occupied risk ratings Pass $ 71,288 $ 196,915 $ 190,384 $ 118,457 $ 59,220 $ 268,990 $ 23,740 $ — $ 928,994 Special Mention — 5,773 1,513 2,754 703 2,678 — — 13,421 Substandard — 2,972 7,835 — 111 3,107 — — 14,025 Doubtful/Loss — — — — — — — — — Total CRE owner occupied risk ratings $ 71,288 $ 205,660 $ 199,732 $ 121,211 $ 60,034 $ 274,775 $ 23,740 $ — $ 956,440 Current period gross charge-offs $ — $ — $ — $ 1,380 $ — $ 2,228 $ 29 $ — $ 3,637 Term Loans Amortized Cost Basis by Origination Year - As of December 31, 2023 (in thousands) 2023 2022 2021 2020 2019 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Commercial real estate: Multifamily risk ratings Pass $ 28,445 $ 177,032 $ 279,660 $ 89,106 $ 104,108 $ 225,446 $ 33,470 $ — $ 937,267 Special Mention — — 11,914 — — 321 — — 12,235 Substandard — — — — — — — — — Doubtful/Loss — — — — — — — — — Total multifamily loans $ 28,445 $ 177,032 $ 291,574 $ 89,106 $ 104,108 $ 225,767 $ 33,470 $ — $ 949,502 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Commercial real estate: Farmland risk ratings Pass $ 21,729 $ 46,398 $ 37,134 $ 16,006 $ 16,780 $ 41,663 $ 50,857 $ — $ 230,567 Special Mention — 2,170 5,802 51 261 734 — — 9,018 Substandard 101 813 9,053 377 — 13,266 7,859 — 31,469 Doubtful/Loss — — — — — — — — — Total farmland loans $ 21,830 $ 49,381 $ 51,989 $ 16,434 $ 17,041 $ 55,663 $ 58,716 $ — $ 271,054 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Consumer loans: SFR 1-4 1st DT liens risk ratings Pass $ 135,741 $ 189,920 $ 260,870 $ 125,081 $ 29,568 $ 126,975 $ — $ 4,079 $ 872,234 Special Mention 71 — — — — 1,948 — 27 2,046 Substandard — 140 1,296 1,490 531 5,265 — 436 9,158 Doubtful/Loss — — — — — — — — — Total SFR 1st DT liens $ 135,812 $ 190,060 $ 262,166 $ 126,571 $ 30,099 $ 134,188 $ — $ 4,542 $ 883,438 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Consumer loans: SFR HELOCs and Junior Liens risk ratings Pass $ 297 $ — $ — $ — $ — $ 96 $ 343,698 $ 6,444 $ 350,535 Special Mention — — — — — — 2,274 138 2,412 Substandard — — — — — — 3,212 654 3,866 Doubtful/Loss — — — — — — — — — Total SFR HELOCs and Junior Liens $ 297 $ — $ — $ — $ — $ 96 $ 349,184 $ 7,236 $ 356,813 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ 66 $ 66 Consumer loans: Other risk ratings Pass $ 34,441 $ 9,061 $ 8,908 $ 7,419 $ 6,825 $ 4,619 $ 659 $ — $ 71,932 Special Mention 21 54 203 63 54 37 18 — 450 Substandard 87 183 164 30 116 52 3 — 635 Doubtful/Loss — — — — — — — — — Total other consumer loans $ 34,549 $ 9,298 $ 9,275 $ 7,512 $ 6,995 $ 4,708 $ 680 $ — $ 73,017 Current period gross charge-offs $ 376 $ 82 $ — $ 36 $ 39 $ 9 $ 16 $ — $ 558 Term Loans Amortized Cost Basis by Origination Year - As of December 31, 2023 (in thousands) 2023 2022 2021 2020 2019 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Commercial and industrial loans: Commercial and industrial risk ratings Pass $ 70,930 $ 83,184 $ 51,455 $ 9,504 $ 10,193 $ 7,636 $ 340,858 $ 318 $ 574,078 Special Mention 33 663 237 83 — 178 1,126 — 2,320 Substandard — 2,014 782 103 4 762 6,318 74 10,057 Doubtful/Loss — — — — — — — — Total commercial and industrial loans $ 70,963 $ 85,861 $ 52,474 $ 9,690 $ 10,197 $ 8,576 $ 348,302 $ 392 $ 586,455 Current period gross charge-offs $ 153 $ 287 $ 240 $ 2,285 $ — $ — $ 896 $ 18 $ 3,879 Construction loans: Construction risk ratings Pass $ 56,378 $ 136,294 $ 85,144 $ 47,632 $ 4,583 $ 6,518 $ — $ — $ 336,549 Special Mention — 10,582 — — — — — — 10,582 Substandard — — — — 67 — — — 67 Doubtful/Loss — — — — — — — — — Total construction loans $ 56,378 $ 146,876 $ 85,144 $ 47,632 $ 4,650 $ 6,518 $ — $ — $ 347,198 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Agriculture production loans: Agriculture production risk ratings Pass $ 945 $ 2,749 $ 1,595 $ 396 $ 620 $ 8,491 $ 114,935 $ — $ 129,731 Special Mention — 183 543 176 — — 11,302 — 12,204 Substandard — — — — — — 2,562 — 2,562 Doubtful/Loss — — — — — — — — — Total agriculture production loans $ 945 $ 2,932 $ 2,138 $ 572 $ 620 $ 8,491 $ 128,799 $ — $ 144,497 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Leases: Lease risk ratings Pass $ 8,250 $ — $ — $ — $ — $ — $ — $ — $ 8,250 Special Mention — Substandard — Doubtful/Loss — Total leases $ 8,250 $ — $ — $ — $ — $ — $ — $ — $ 8,250 Current period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Total loans outstanding: Risk ratings Pass $ 608,770 $ 1,255,416 $ 1,205,360 $ 551,257 $ 438,305 $ 1,483,309 $ 1,049,903 $ 10,841 $ 6,603,161 Special Mention 125 20,754 20,212 8,408 18,111 20,070 15,967 165 103,812 Substandard 188 6,122 19,897 2,000 2,968 34,992 20,166 1,164 87,497 Doubtful/Loss — — — — — — — — — Total loans outstanding $ 609,083 $ 1,282,292 $ 1,245,469 $ 561,665 $ 459,384 $ 1,538,371 $ 1,086,036 $ 12,170 $ 6,794,470 Current period gross charge-offs $ 529 $ 369 $ 240 $ 3,701 $ 39 $ 2,237 $ 941 $ 84 $ 8,140 Term Loans Amortized Cost Basis by Origination Year – As of December 31, 2022 (in thousands) 2022 2021 2020 2019 2016 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Commercial real estate: CRE non-owner occupied risk ratings Pass $ 399,910 $ 304,636 $ 152,960 $ 221,659 $ 147,842 $ 748,994 $ 123,794 $ — $ 2,099,795 Special Mention — — — 20,033 — 21,681 1,346 — 43,060 Substandard — 864 768 — 1,059 4,179 — — 6,870 Doubtful/Loss — — — — — — — — — Total CRE non-owner occupied risk ratings $ 399,910 $ 305,500 $ 153,728 $ 241,692 $ 148,901 $ 774,854 $ 125,140 $ — $ 2,149,725 Commercial real estate: CRE owner occupied risk ratings Pass $ 210,101 $ 197,787 $ 120,929 $ 64,244 $ 49,755 $ 251,137 $ 43,343 $ — $ 937,296 Special Mention 131 16,296 234 731 — 6,971 879 — 25,242 Substandard 3,213 — 5,249 1,893 1,103 10,654 157 — 22,269 Doubtful/Loss — Total CRE owner occupied risk ratings $ 213,445 $ 214,083 $ 126,412 $ 66,868 $ 50,858 $ 268,762 $ 44,379 $ — $ 984,807 Commercial real estate: Multifamily risk ratings Pass $ 159,318 $ 290,170 $ 96,937 $ 108,586 $ 106,287 $ 154,125 $ 28,989 $ — $ 944,412 Special Mention — — — — — — — — — Substandard — — — — — 125 — — 125 Doubtful/Loss — — — — — — — — — Total multifamily loans $ 159,318 $ 290,170 $ 96,937 $ 108,586 $ 106,287 $ 154,250 $ 28,989 $ — $ 944,537 Commercial real estate: Farmland risk ratings Pass $ 47,067 $ 53,275 $ 16,739 $ 18,589 $ 12,386 $ 34,528 $ 53,684 $ — $ 236,268 Special Mention 3,139 783 246 5,000 — 3,991 14,275 — 27,434 Substandard — — 1,772 765 3,158 7,094 3,523 — 16,312 Doubtful/Loss — Total farmland loans $ 50,206 $ 54,058 $ 18,757 $ 24,354 $ 15,544 $ 45,613 $ 71,482 $ — $ 280,014 Consumer loans: SFR 1-4 1st DT liens risk ratings Pass $ 194,933 $ 265,370 $ 131,922 $ 33,395 $ 28,545 $ 115,469 $ 8 $ 2,924 $ 772,566 Special Mention — — 1,531 282 3,277 5,854 — 465 11,409 Substandard — 1,204 — — 1,004 3,521 — 645 6,374 Doubtful/Loss — — — — — — — — — Total SFR 1st DT liens $ 194,933 $ 266,574 $ 133,453 $ 33,677 $ 32,826 $ 124,844 $ 8 $ 4,034 $ 790,349 Term Loans Amortized Cost Basis by Origination Year – As of December 31, 2022 (in thousands) 2022 2021 2020 2019 2016 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Consumer loans: SFR HELOCs and Junior Liens risk ratings Pass $ 505 $ — $ — $ — $ — $ 127 $ 378,939 $ 8,462 $ 388,033 Special Mention — — — — — — 1,842 81 1,923 Substandard — — — — — — 3,072 638 3,710 Doubtful/Loss — — — — — — — — — Total SFR HELOCs and Junior Liens $ 505 $ — $ — $ — $ — $ 127 $ 383,853 $ 9,181 $ 393,666 Consumer loans: Other risk ratings Pass $ 14,070 $ 12,990 $ 10,211 $ 10,650 $ 5,225 $ 1,945 $ 899 $ — $ 55,990 Special Mention — 18 77 135 176 32 47 — 485 Substandard — — 42 92 — 96 23 — 253 Doubtful/Loss — — — — — — — — — Total other consumer loans $ 14,070 $ 13,008 $ 10,330 $ 10,877 $ 5,401 $ 2,073 $ 969 $ — $ 56,728 Commercial and industrial loans: Commercial and industrial risk ratings Pass $ 125,710 $ 64,966 $ 17,746 $ 23,131 $ 7,628 $ 5,051 $ 297,341 $ 483 $ 542,056 Special Mention 3,032 139 21 49 138 768 11,547 — 15,694 Substandard 1,293 1,142 5,179 14 33 611 3,798 101 12,171 Doubtful/Loss — Total commercial and industrial loans $ 130,035 $ 66,247 $ 22,946 $ 23,194 $ 7,799 $ 6,430 $ 312,686 $ 584 $ 569,921 Construction loans: Construction risk ratings Pass $ 72,840 $ 72,308 $ 43,409 $ 15,358 $ 2,159 $ 4,900 $ — $ — $ 210,974 Special Mention — — — — — — — — — Substandard — — — 457 — 129 — — 586 Doubtful/Loss — — — — — — — — — Total construction loans $ 72,840 $ 72,308 $ 43,409 $ 15,815 $ 2,159 $ 5,029 $ — $ — $ 211,560 Agriculture production loans: Agriculture production risk ratings Pass $ 3,414 $ 2,777 $ 1,149 $ 1,104 $ 8,902 $ 1,058 $ 38,425 $ — $ 56,829 Special Mention — — — — 90 31 1,632 — 1,753 Substandard — — — — — — 2,832 — 2,832 Doubtful/Loss — — — — — — — — — Total agriculture production loans $ 3,414 $ 2,777 $ 1,149 $ 1,104 $ 8,992 $ 1,089 $ 42,889 $ — $ 61,414 Term Loans Amortized Cost Basis by Origination Year – As of December 31, 2022 (in thousands) 2022 2021 2020 2019 2016 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Leases: Lease risk ratings Pass $ 7,726 $ — $ — $ — $ — $ — $ — $ — $ 7,726 Special Mention — — — — — — — — — Substandard — — — — — — — — — Doubtful/Loss — — — — — — — — — Total leases $ 7,726 $ — $ — $ — $ — $ — $ — $ — $ 7,726 Total loans outstanding: Risk ratings Pass $ 1,235,594 $ 1,264,279 $ 592,002 $ 496,716 $ 368,729 $ 1,317,334 $ 965,422 $ 11,869 $ 6,251,945 Special Mention 6,302 17,236 2,109 26,230 3,681 39,328 31,568 546 127,000 Substandard 4,506 3,210 13,010 3,221 6,357 26,409 13,405 1,384 71,502 Doubtful/Loss — — — — — — — — — Total loans outstanding $ 1,246,402 $ 1,284,725 $ 607,121 $ 526,167 $ 378,767 $ 1,383,071 $ 1,010,395 $ 13,799 $ 6,450,447
Analysis of Past Due Loans	The following table shows the ending balance of current and past due originated loans by loan category as of the date indicated: Analysis of Past Due Loans - As of December 31, 2023 (in thousands) 30-59 days 60-89 days > 90 days Total Past Current Total Commercial real estate: CRE non-owner occupied $ 3,876 $ — $ 1,382 $ 5,258 $ 2,212,548 $ 2,217,806 CRE owner occupied 34 — 247 281 956,159 956,440 Multifamily — — — — 949,502 949,502 Farmland 635 3,798 2,052 6,485 264,569 271,054 Total commercial real estate loans 4,545 3,798 3,681 12,024 4,382,778 4,394,802 Consumer: SFR 1-4 1st DT liens 141 1,449 490 2,080 881,358 883,438 SFR HELOCs and junior liens 16 — 623 639 356,174 356,813 Other 148 40 30 218 72,799 73,017 Total consumer loans 305 1,489 1,143 2,937 1,310,331 1,313,268 Commercial and industrial 244 605 1,654 2,503 583,952 586,455 Construction — — — — 347,198 347,198 Agriculture production 593 878 33 1,504 142,993 144,497 Leases 447 — — 447 7,803 8,250 Total $ 6,134 $ 6,770 $ 6,511 $ 19,415 $ 6,775,055 $ 6,794,470 The following table shows the ending balance of current and past due originated loans by loan category as of the date indicated: Analysis of Past Due Loans - As of December 31, 2022 (in thousands) 30-59 days 60-89 days > 90 days Total Past Current Total Commercial real estate: CRE non-owner occupied $ — $ — $ — $ — $ 2,149,725 $ 2,149,725 CRE owner occupied — 98 75 173 984,634 984,807 Multifamily 159 — — 159 944,378 944,537 Farmland — — — — 280,014 280,014 Total commercial real estate loans 159 98 75 332 4,358,751 4,359,083 Consumer: SFR 1-4 1st DT liens 24 — 279 303 790,046 790,349 SFR HELOCs and junior liens 172 166 707 1,045 392,621 393,666 Other 26 34 55 115 56,613 56,728 Total consumer loans 222 200 1,041 1,463 1,239,280 1,240,743 Commercial and industrial 2,300 190 283 2,773 567,148 569,921 Construction — — 379 379 211,181 211,560 Agriculture production — — — — 61,414 61,414 Leases — — — — 7,726 7,726 Total $ 2,681 $ 488 $ 1,778 $ 4,947 $ 6,445,500 $ 6,450,447
Schedule of Non Accrual Loans	The following table shows the ending balance of non accrual loans by loan category as of the date indicated: Non Accrual Loans As of December 31, 2023 As of December 31, 2022 (in thousands) Non accrual with no allowance for credit losses Total non accrual Past due 90 days or more and still accruing Non accrual with no allowance for credit losses Total non accrual Past due 90 days or more and still accruing Commercial real estate: CRE non-owner occupied $ 2,024 $ 2,024 $ — $ 1,739 $ 1,739 $ — CRE owner occupied 3,994 3,994 — 4,938 4,938 — Multifamily — — — 125 125 — Farmland 5,996 14,484 — 1,772 1,772 — Total commercial real estate loans 12,014 20,502 — 8,574 8,574 — Consumer: SFR 1-4 1st DT liens 2,808 2,811 — 4,117 4,220 — SFR HELOCs and junior liens 3,281 3,571 — 2,498 3,155 — Other 39 105 — 47 84 — Total consumer loans 6,128 6,487 — 6,662 7,459 — Commercial and industrial 1,379 2,503 10 1,224 3,518 — Construction 67 67 — 491 491 — Agriculture production — 2,322 — 1,279 1,279 — Leases — — — — — — Sub-total 19,588 31,881 10 18,230 21,321 — Less: Guaranteed loans (766) (878) — (105) (225) — Total, net $ 18,822 $ 31,003 $ 10 $ 18,125 $ 21,096 $ —
Amortized Cost Basis of Collateral Dependent Loans, By Class of Loan	The following tables present the amortized cost basis of collateral dependent loans by class of loans as of the following periods: As of December 31, 2023 (in thousands) Retail Office Warehouse Other Multifamily Farmland SFR -1st Deed SFR -2nd Deed Automobile/Truck A/R and Inventory Equipment Total Commercial real estate: CRE non-owner occupied $ 124 $ 615 $ 519 $ 766 $ — $ — $ — $ — $ — $ — $ — $ 2,024 CRE owner occupied 614 — 297 3,083 — — — — — — — 3,994 Multifamily — — — — — — — — — — — — Farmland — — — 635 — 13,849 — — — — — 14,484 Total commercial real estate loans 738 615 816 4,484 — 13,849 — — — — 20,502 Consumer: SFR 1-4 1st DT liens — — — — — — 2,808 — — — — 2,808 SFR HELOCs and junior liens — — — — — — 1,816 1,467 — — — 3,283 Other — — — — — — — — 95 — — 95 Total consumer loans — — — — — — 4,624 1,467 95 — — 6,186 Commercial and industrial — — — — — — — — — 1,712 791 2,503 Construction — — — — — — 67 — — — — 67 Agriculture production — — — 2,288 — — — — — — 33 2,321 Leases — — — — — — — — — — — — Total $ 738 $ 615 $ 816 $ 6,772 $ — $ 13,849 $ 4,691 $ 1,467 $ 95 $ 1,712 $ 824 $ 31,579 As of December 31, 2022 (in thousands) Retail Office Warehouse Other Multifamily Farmland SFR -1st Deed SFR -2nd Deed Automobile/Truck A/R and Inventory Equipment Total Commercial real estate: CRE non-owner occupied $ 777 $ 98 $ — $ 864 $ — $ — $ — $ — $ — $ — $ — $ 1,739 CRE owner occupied 548 75 1,103 3,212 — — — — — — — 4,938 Multifamily — — — — 125 — — — — — — 125 Farmland — — — — — 1,772 — — — — — 1,772 Total commercial real estate loans 1,325 173 1,103 4,076 125 1,772 — — — — — 8,574 Consumer: SFR 1-4 1st DT liens — — — — — — 4,220 — — — — 4,220 SFR HELOCs and junior liens — — — — — — 1,664 1,121 — — — 2,785 Other — — — 5 — — — — 61 — 2 68 Total consumer loans — — — 5 — — 5,884 1,121 61 — 2 7,073 Commercial and industrial — — — 1,874 — — — — — 1,596 48 3,518 Construction — — — 379 — — 112 — — — — 491 Agriculture production — — — — — — — — — — 1,279 1,279 Leases — — — — — — — — — — Total $ 1,325 $ 173 $ 1,103 $ 6,334 $ 125 $ 1,772 $ 5,996 $ 1,121 $ 61 $ 1,596 $ 1,329 $ 20,935 For the twelve months ended December 31, 2023 (in thousands) Principal Forgiveness Payment Delay /Term Extension Combination - Term Change / Available Credit Reduction Combination - Payment Delay /Term Reduction Total % of Loans Outstanding Commercial real estate: Farmland $ — $ — $ — $ 1,430 0.53 % Commercial and industrial — 152 60 — 0.08 % Total $ — $ 152 $ 60 $ 1,430 0.61 % The following table presents the financial effect of loan modifications made to borrowers experiencing financial difficulty during the twelve months ended December 31, 2023. Twelve Months Ended Modification Type Loan Type Financial Effect Payment Delay / Extension Commercial and industrial Added 12 months to the life of the loan, which reduced the payment owed by the borrowers Payment Delay / Extension Commercial and industrial Changed loan terms from fully amortizing to interest-only with balloon, which reduced the payment owed by the borrowers Combination - Payment Delay / Term Reduction Farmland Changed loan terms from fully amortizing to interest-only with balloon, and reduced the loan maturity by 12 months, which reduced the loan payment owed by the borrowers Combination - Term Change / Available Credit Reduction Commercial and industrial Added 60 months to the life of the loan to avoid balloon repayment and reduced available credit by $11000

Real Estate Owned (Tables)

Real Estate Owned (Tables)	12 Months Ended
	Dec. 31, 2023
Repossessed Assets [Abstract]
Summary of Activity in Balance of Real Estate Owned	A summary of the activity in the balance of real estate owned follows: Year ended December 31, (in thousands) 2023 2022 Beginning balance, net $ 3,439 $ 2,594 Additions/transfers from loans 155 1,349 Dispositions/sales (206) (707) Valuation adjustments (683) 203 Ending balance, net $ 2,705 $ 3,439 Ending valuation allowance $ (739) $ (113) Ending number of foreclosed assets 9 9 Proceeds from sale of real estate owned $ 224 $ 873 Gain on sale of real estate owned $ 19 $ 166

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2023
Property, Plant and Equipment [Abstract]
Summary of Premises and Equipment	As of December 31, (in thousands) 2023 2022 Land and land improvements $ 26,032 $ 25,899 Buildings 65,467 64,018 Furniture and equipment 43,984 42,850 135,483 132,767 Less: Accumulated depreciation (65,154) (61,657) 70,329 71,110 Construction in progress 1,018 1,217 Total premises and equipment $ 71,347 $ 72,327

Cash Value of Life Insurance (T

Cash Value of Life Insurance (Tables)	12 Months Ended
	Dec. 31, 2023
Cash Value of Life Insurance [Abstract]
Summary of Activity in Balance of Cash Value of Life Insurance	A summary of the activity in the balance of cash value of life insurance follows: Year ended December 31, (in thousands) 2023 2022 Beginning balance $ 133,742 $ 117,857 Acquired policies from business combination — 13,609 Increase in cash value of life insurance 3,150 2,858 Gain on death benefit — 309 Insurance proceeds receivable reclassified to other assets — (891) Ending balance $ 136,892 $ 133,742 End of period death benefit $ 224,021 $ 223,427 Number of policies owned 216 216 Insurance companies used 14 14 Current and former employees and directors covered 79 79

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Goodwill Intangible	The following table summarizes the Company’s goodwill intangible as of the dates indicated: (in thousands) December 31, Additions Reductions December 31, Goodwill $ 304,442 $ — $ — $ 304,442
Summary of Core Deposit Intangibles	The following table summarizes the Company’s core deposit intangibles (“CDI”) as of the dates indicated: (in thousands) December 31, December 31, Core deposit intangibles, gross $ 38,826 $ 36,265 Fully amortized portion (2,046) (8,074) Acquisition of VRB — 10,635 Core deposit intangibles, gross ending balance 36,780 38,826 Accumulated amortization, gross (22,156) (23,896) Fully amortized portion 2,046 8,074 Amortization expense (6,118) (6,334) Accumulated amortization, gross ending balance (26,228) (22,156) Core deposit intangible, net $ 10,552 $ 16,670
Remaining Estimated Core Deposit Intangible Amortization	The following table summarizes the Company’s estimated core deposit intangible amortization (dollars in thousands): Years Ended Estimated CDI Amortization 2024 $ 4,120 2025 1,961 2026 1,527 2027 1,008 2028 797 Thereafter 1,139 $ 10,552

Mortgage Servicing Rights (Tabl

Mortgage Servicing Rights (Tables)	12 Months Ended
	Dec. 31, 2023
Mortgage Servicing Right [Abstract]
Fair Value of Mortgage Servicing Rights	The following tables summarize the activity in, and the main assumptions used to determine the fair value of mortgage servicing rights for the periods indicated (dollars in thousands): (in thousands) Year ended December 31, 2023 2022 2021 Balance at beginning of period $ 6,712 $ 5,874 $ 5,092 Additions 400 537 1,654 Change in fair value (506) 301 (872) Balance at end of period $ 6,606 $ 6,712 $ 5,874 Contractually specified servicing fees, late fees and ancillary fees earned $ 1,808 $ 1,887 $ 1,881 Balance of loans serviced at: Beginning of period $ 739,919 $ 770,299 $ 779,530 End of period $ 714,801 $ 739,919 $ 770,299 Period end: Weighted-average prepayment speed (CPR) 116.0 % 127.0 % 208.0 % Weighted-average expected life (years) 7.8 7.6 5.7 Weighted-average discount rate 12.0 % 12.0 % 12.0 %

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2023
Leases [Abstract]
Components of Lease Expense and Cash Flow Information Related to Leases	The following table presents the components of lease expense for the periods indicated: Year ended December 31, (in thousands) 2023 2022 Operating lease cost $ 5,997 $ 5,725 Short-term lease cost 329 283 Variable lease cost 38 26 Sublease income — — Total lease cost $ 6,364 $ 6,034 The following table presents supplemental cash flow information related to leases as of the periods ended: Year ended December 31, (in thousands) 2023 2022 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows for operating leases $ 6,378 $ 5,904 ROUA obtained in exchange for operating lease liabilities $ 4,300 $ 6,149
Weighted Average Operating Lease Term and Discount Rate	The following table presents the weighted average operating lease term and discount rate as of the periods ended: Year ended December 31, 2023 2022 Weighted-average remaining lease term 7.9 years 8.3 years Weighted-average discount rate 3.3 % 3.0 %
Expected Future Operating Lease Payments	At December 31, 2023, future expected operating lease payments are as follows (in thousands): Periods ending December 31, 2024 $ 5,755 2025 5,186 2026 4,642 2027 3,951 2028 2,891 Thereafter 10,104 32,529 Discount for present value of expected cash flows (4,268) Lease liability at December 31, 2023 $ 28,261

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2023
Deposits [Abstract]
Summary of Balances of Deposits	A summary of the balances of deposits follows: (in thousands) December 31, 2023 2022 Noninterest-bearing demand $ 2,722,689 $ 3,502,095 Interest-bearing demand 1,731,814 1,718,541 Savings 2,682,068 2,884,378 Time certificates, $250,000 and over 250,180 46,350 Other time certificates 447,287 177,649 Total deposits $ 7,834,038 $ 8,329,013
Schedule of Maturities of Time Deposits	At December 31, 2023, the scheduled maturities of time deposits were as follows (in thousands): Scheduled 2024 $ 626,979 2025 59,053 2026 8,453 2027 1,868 2028 1,114 Thereafter — Total $ 697,467

Other Borrowings (Tables)

Other Borrowings (Tables)	12 Months Ended
	Dec. 31, 2023
Debt Disclosure [Abstract]
Summary of Balances of Other Borrowings	A summary of the balances of other borrowings follows: December 31, 2023 2022 (in thousands) Overnight borrowing at FHLB, fixed rate, as of December 31, 2023 of 5.70%, payable on January 2, 2024 $ 400,000 $ — Term borrowing at FHLB, fixed rate, as of December 31, 2023 of 4.75%, payable on April 8, 2024 200,000 — Overnight borrowing at FHLB, fixed rate, as of December 31, 2022 of 4.65%, payable on January 3, 2023 — 216,700 Other collateralized borrowings, fixed rate, as of December 31, 2023 and 2022 of 0.05%, payable on January 2, 2024 and January 3, 2023, respectively 32,582 47,905 Total other borrowings $ 632,582 $ 264,605

Junior Subordinated Debt (Table

Junior Subordinated Debt (Tables)	12 Months Ended
	Dec. 31, 2023
Equity [Abstract]
Summary of Terms and Recorded Balance of Subordinated Debenture	The following table summarizes the terms and recorded balance of each subordinated debenture as of the date indicated (dollars in thousands): Coupon Rate As of December 31, 2023 December 31, 2022 Subordinated Debt Series Maturity Face Current Recorded Recorded TriCo Cap Trust I 10/7/2033 $ 20,619 3.05 % 8.71 % $ 20,619 $ 20,619 TriCo Cap Trust II 7/23/2034 20,619 2.55 % 8.22 % 20,619 20,619 North Valley Trust II 4/24/2033 6,186 3.25 % 8.89 % 5,602 5,503 North Valley Trust III 7/23/2034 5,155 2.80 % 8.47 % 4,472 4,383 North Valley Trust IV 3/15/2036 10,310 1.33 % 6.98 % 7,615 7,393 VRB Subordinated - 6% 3/29/2029 16,000 Fixed 6.00 % 17,000 17,187 VRB Subordinated - 5% 8/27/2035 20,000 Fixed 5.00 % 25,172 25,336 $ 98,889 $ 101,099 $ 101,040

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Summary of Bank's Commitments and Contingent Liabilities	The following table presents a summary of the Bank’s commitments and contingent liabilities: December 31, (in thousands) 2023 2022 Financial instruments whose amounts represent risk: Commitments to extend credit: Commercial loans $ 788,742 $ 656,705 Consumer loans 652,110 760,588 Real estate mortgage loans 453,647 458,896 Real estate construction loans 331,178 312,371 Standby letters of credit 38,449 26,599 Deposit account overdraft privilege 121,539 126,634

Stock Options and Other Equit_2

Stock Options and Other Equity-Based Incentive Instruments (Tables)	12 Months Ended
	Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]
Stock Option Activity	Stock option activity is summarized in the following table for the dates indicated: Number of Option Price Weighted Outstanding at January 1, 2022 78,825 $15.34 to $23.21 $ 19.28 Options granted — — — Options exercised (63,325) $15.34 to $19.46 $ 18.79 Options forfeited — — — Outstanding at December 31, 2022 15,500 $19.46 to $23.21 $ 21.27 Options granted — — — Options exercised (8,000) $19.46 $ 19.46 Options forfeited — — — Outstanding at December 31, 2023 7,500 $23.21 $ 23.21
Summary of Options Outstanding	The following table shows the number, weighted-average exercise price, intrinsic value, and weighted average remaining contractual life of options exercisable, options not yet exercisable and total options outstanding as of December 31, 2023: Currently Currently Not Total Number of options 7,500 — 7,500 Weighted average exercise price $ 23.21 $ — $ 23.21 Intrinsic value (in thousands) $ 148 $ — $ 148 Weighted average remaining contractual term (yrs.) 0.8 n/a 0.8
Information about Options	The following table shows the total intrinsic value of options exercised, the total fair value of options vested, total compensation costs for options recognized in income, total tax benefit and excess tax benefits recognized in income related to compensation costs for options during the periods indicated: Year Ended December 31, 2023 2022 2021 Intrinsic value of options exercised $ 134,000 $ 1,190,000 $ 1,476,000 Fair value of options that vested — — — Total compensation costs for options recognized in expense — — — Total tax benefit recognized in income related to compensation costs for options 40,000 — — Excess tax benefit recognized in income — — —
Restricted Stock Unit (RSU) Activity	Restricted stock unit activity is summarized in the following table for the dates indicated: Service Condition Vesting RSUs Market Plus Service Condition Number Weighted Average Number of Weighted Average Outstanding at January 1, 2023 139,194 114,481 RSUs granted 84,066 $ 34.52 55,908 $ 27.72 Additional market plus service condition RSUs vested — 10,301 RSUs added through dividend credits 4,706 — RSUs released through vesting (81,902) (55,928) RSUs forfeited/expired (1,577) (1,660) Outstanding at December 31, 2023 144,487 123,102
Schedule of Weighted Average Fair Value and Assumptions	The Company uses a Monte Carlo simulation model to determine the grant-date fair value of awards with market plus service conditions (PSU). The weighted average fair value and assumptions used to value the PSU awards granted with market-based performance conditions are as follows: December 31, 2023 2022 Performance share fair value $ 27.73 $ 40.89 Risk-free interest rate 4.16 % 4.10 % Expected volatility 33.86 % 39.01 % Expected life (years) 3 3 Expected dividend yield 3.22 % 2.32 %
Summary of Compensation Costs and Excess Tax Benefits for RSUs	The following table shows the compensation costs and excess tax benefits for RSUs recognized in income for the periods indicated: Year Ended December 31, 2023 2022 2021 Total compensation costs recognized in income Service condition vesting RSUs $ 2,807,000 $ 2,883,000 $ 1,728,000 Market plus service condition vesting RSUs 1,319,000 986,000 910,000 Excess tax benefit recognized in income Service condition vesting RSUs $ 924,000 $ 1,079,000 $ 626,000 Market plus service condition vesting RSUs 594,000 355,000 226,000

Non-interest Income and Expen_2

Non-interest Income and Expense (Tables)	12 Months Ended
	Dec. 31, 2023
Other Income and Expenses [Abstract]
Components of Other Noninterest Income	The components of other non-interest income were as follows: Year Ended December 31, (in thousands) 2023 2022 2021 ATM and interchange fees $ 26,459 $ 26,767 $ 25,356 Service charges on deposit accounts 17,595 16,536 14,013 Other service fees 4,732 4,274 3,570 Mortgage banking service fees 1,808 1,887 1,881 Change in value of mortgage loan servicing rights (506) 301 (872) Total service charges and fees 50,088 49,765 43,948 Asset management and commission income 4,517 3,986 3,668 Increase in cash value of life insurance 3,150 2,858 2,775 Gain on sale of loans 1,166 2,342 9,580 Lease brokerage income 441 820 746 Sale of customer checks 1,383 1,167 459 Loss on sale of investment securities (284) — — Gain (loss) on marketable equity securities 36 (340) (86) Other 903 2,448 2,574 Total other noninterest income 11,312 13,281 19,716 Total noninterest income $ 61,400 $ 63,046 $ 63,664
Components of Noninterest Expense	The components of noninterest expense were as follows: Year Ended December 31, (in thousands) 2023 2022 2021 Base salaries, net of deferred loan origination costs $ 94,564 $ 84,861 $ 69,844 Incentive compensation 15,557 17,908 14,957 Benefits and other compensation costs 25,674 27,083 21,550 Total salaries and benefits expense 135,795 129,852 106,351 Occupancy 16,135 15,493 14,910 Data processing and software 18,933 14,660 13,985 Equipment 5,644 5,733 5,358 ATM and POS network charges 7,080 6,984 6,040 Merger and acquisition expense — 6,253 1,523 Advertising 3,531 3,694 2,899 Professional fees 7,358 4,392 3,657 Intangible amortization 6,118 6,334 5,464 Telecommunications 2,547 2,298 2,253 Regulatory assessments and insurance 5,276 3,142 2,581 Courier service 1,851 2,013 1,214 Operational losses 2,444 1,000 964 Postage 1,236 1,147 710 Gain on sale or acquisition of foreclosed assets (133) (481) (233) Loss (gain) on disposal of fixed assets 23 (1,070) (439) Other miscellaneous expense 19,344 15,201 11,038 Total other noninterest expense 97,387 86,793 71,924 Total noninterest expense $ 233,182 $ 216,645 $ 178,275

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Components of Consolidated Income Tax Expense	The components of consolidated income tax expense are as follows (in thousands): Year Ended December 31, 2023 2022 2021 Current tax expense Federal $ 26,133 $ 34,155 $ 28,763 State 19,781 22,355 18,221 $ 45,914 56,510 46,984 Deferred tax expense Federal (1,330) (5,224) (872) State (1,069) (2,798) (64) (2,399) (8,022) (936) Total tax expense $ 43,515 $ 48,488 $ 46,048
Schedule of Components of Investments in Qualified Affordable Housing Projects	The Company recognized, as components of tax expense, tax credits and other tax benefits, and amortization expense relating to our investments in Qualified Affordable Housing Projects as follows for the periods indicated (in thousands): Year Ended December 31, 2023 2022 2021 Tax credits and other tax benefits – decrease in tax expense $ (10,857) $ (6,370) $ (4,224) Amortization – increase in tax expense $ 9,092 $ 6,178 $ 3,604
Reconciliation of Effective Tax Rate and Statutory Federal Income Tax Rate	The effective tax rate and the statutory federal income tax rate are reconciled as follows: Year Ended December 31, (in thousands) 2023 2022 2021 Federal statutory income tax rate 21.0 % 21.0 % 21.0 % State income taxes, net of federal tax benefit 7.9 7.9 7.9 Tax-exempt interest on municipal obligations (0.7) (0.7) (0.5) Tax-exempt life insurance related income (0.4) (0.4) (0.5) Low income housing tax credits (6.6) (3.7) (2.6) Low income housing tax credit amortization 5.6 3.6 2.2 Equity compensation 0.3 (0.2) (0.1) Non-deductible merger expenses — 0.1 0.1 Other (0.1) 0.3 0.6 Effective Tax Rate 27.0 % 27.9 % 28.1 %
Company's Net Deferred Tax Asset Recorded in Other Assets	The temporary differences, tax effected, which give rise to the Company’s net deferred tax asset recorded in other assets are as follows for the years indicated (in thousands): December 31, 2023 2022 Deferred tax assets: Allowance for losses and reserve for unfunded commitments $ 37,656 $ 32,519 Deferred compensation 1,534 1,696 Other accrued expenses 3,899 2,720 Additional unfunded status of the supplemental retirement plans 15,434 16,036 Operating lease liability 8,355 8,575 State taxes 3,346 3,649 Share based compensation 1,050 1,132 Nonaccrual interest 706 643 Acquisition cost basis 12,046 14,640 Unrealized loss on securities 68,535 85,897 Tax credits 852 852 Net operating loss carryforwards 953 2,098 Other 190 120 Total deferred tax assets 154,556 170,577 Deferred tax liabilities: Securities income (777) (777) Depreciation (8,364) (8,270) Right of use asset (7,726) (7,941) Funded pension liability (3,999) (4,110) Securities accretion (2,265) (1,265) Mortgage servicing rights valuation (1,946) (1,976) Core deposit intangible (2,814) (4,778) Junior subordinated debt (1,171) (1,293) Prepaid expenses and other (1,170) (991) Total deferred tax liability (30,232) (31,401) Net deferred tax asset $ 124,324 $ 139,176

Earnings per Share (Tables)

Earnings per Share (Tables)	12 Months Ended
	Dec. 31, 2023
Earnings Per Share [Abstract]
Computation of Earnings Per Share	Earnings per share have been computed based on the following: Year Ended December 31, (in thousands) 2023 2022 2021 Net income $ 117,390 $ 125,419 $ 117,655 Average number of common shares outstanding 33,261 32,584 29,721 Effect of dilutive stock options and restricted stock 94 137 161 Average number of common shares outstanding used to calculate diluted earnings per share 33,355 32,721 29,882 Equity awards excluded from diluted earnings per share because their effect was antidilutive — — —

Comprehensive Income (Loss) (Ta

Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2023
Equity [Abstract]
Components of Other Comprehensive Income and Related Tax Effects	The components of other comprehensive income and related tax effects are as follows: Year Ended December 31, (in thousands) 2023 2022 2021 Unrealized holding gains (losses) on available for sale securities before reclassifications $ 58,444 $ (290,157) $ (19,575) Amounts reclassified out of accumulated other comprehensive income: Realized loss (gain) on debt securities 284 — — Total amounts reclassified out of accumulated other comprehensive income 284 — — Unrealized holding gains (losses) on available for sale securities after reclassifications 58,728 (290,157) (19,575) Tax effect (17,363) 85,781 5,787 Unrealized holding gains (losses) on available for sale securities, net of tax 41,365 (204,376) (13,788) Change in unfunded status of the supplemental retirement plans before reclassifications 81 11,522 3,497 Amounts reclassified out of accumulated other comprehensive income: Amortization of prior service cost — (28) (58) Amortization of actuarial losses (455) 8 254 Total amounts reclassified out of accumulated other comprehensive income (455) (20) 196 Change in unfunded status of the supplemental retirement plans after reclassifications (374) 11,502 3,693 Tax effect 111 (3,401) (1,091) Change in unfunded status of the supplemental retirement plans, net of tax (263) 8,101 2,602 Change in joint beneficiary agreement liability before reclassifications (366) 1,389 (113) Tax effect — — — Change in unfunded status of the supplemental retirement plans, net of tax (366) 1,389 (113) Total other comprehensive income (loss) $ 40,736 $ (194,886) $ (11,299)
Components of Accumulated Other Comprehensive Income (Loss)	The components of accumulated other comprehensive loss, included in shareholders’ equity, are as follows: Year Ended December 31, (in thousands) 2023 2022 Net unrealized loss on available for sale securities $ (231,821) $ (290,549) Tax effect 68,534 85,897 Unrealized holding loss on available for sale securities, net of tax (163,287) (204,652) Unfunded status of the supplemental retirement plans 13,527 13,901 Tax effect (3,999) (4,110) Unfunded status of the supplemental retirement plans, net of tax 9,528 9,791 Joint beneficiary agreement liability, net of tax 590 956 Accumulated other comprehensive loss $ (153,169) $ (193,905)

Retirement Plans (Tables)

Retirement Plans (Tables)	12 Months Ended
	Dec. 31, 2023
Retirement Benefits [Abstract]
Summary of 401(k) Contribution Plan	The Company recorded salaries & benefits expense attributable to the 401(k) Plan matching contributions and 401(k) Plan matching contributions for the years ended: Year Ended December 31, (in thousands) 2023 2022 2021 401(k) Plan benefits expense $ 1,767 $ 1,541 $ 1,211 401(k) Plan contributions made by the Company $ 1,524 $ 1,214 $ 1,121
Summary of ESOP Activities	Expenses related to the Company’s ESOP, included in benefits and other compensation costs under salaries and benefits expense, and contributions to the plan for the years ended were: Year Ended December 31, (in thousands) 2023 2022 2021 ESOP benefits expense $ 3,075 $ 2,824 $ 1,888 ESOP contributions made by the Company $ 2,977 $ 3,535 $ 878
Schedule of Deferred Compensation Earnings Credits Included in Noninterest Expense	Earnings credits on deferred balances included in non-interest expense are included in the following table: Year Ended December 31, (in thousands) 2023 2022 2021 Deferred compensation earnings credits included in non-interest expense $ 210 $ 187 $ 176
Schedule of Defined Benefit Pension Plans	Amounts recognized as a component of accumulated other comprehensive income (loss) as of year-end that have not been recognized as a component of the combined net period benefit cost of the Company’s defined benefit pension plans are presented in the following table. The Company expects to recognize approximately $0.5 million of the net actuarial loss reported in the following table as of December 31, 2023 as a component of net periodic benefit cost during 2022. December 31, (in thousands) 2023 2022 Transition obligation $ — $ — Prior service cost — — Net actuarial (gain) / loss (13,527) (13,901) Amount included in accumulated other comprehensive income (loss) (13,527) (13,901) Deferred tax liability / (benefit) 3,999 4,109 Amount included in accumulated other comprehensive income (loss), net of tax $ (9,528) $ (9,792)
Information Pertaining to Activity in Supplemental Retirement Plans	Information pertaining to the activity in the supplemental retirement plans, using a measurement date of December 31, is as follows: December 31, (in thousands) 2023 2022 Change in benefit obligation: Benefit obligation at beginning of year $ (40,341) $ (43,834) Acquisition of obligations — (3,310) Service cost (138) (1,624) Interest cost (2,016) (1,731) Actuarial (loss)/gain 81 10,266 Plan amendments — (2,141) Benefits paid 3,769 2,033 Benefit obligation at end of year $ (38,645) $ (40,341) Change in plan assets: Fair value of plan assets at beginning of year $ — $ — Fair value of plan assets at end of year $ — $ — Funded status $ (38,645) $ (40,341) Unrecognized net obligation existing at January 1, 1986 — — Unrecognized net actuarial (loss)/gain (13,527) (13,901) Unrecognized prior service cost — — Accumulated other comprehensive loss 13,527 13,901 Accrued benefit cost $ (38,645) $ (40,341) Accumulated benefit obligation $ (38,645) $ (40,341)
Net Periodic Benefit Cost Recognized for Supplemental Retirement Plans	The following table sets forth the net periodic benefit cost recognized for the supplemental retirement plans: Year Ended December 31, (in thousands) 2023 2022 2021 Net pension cost included the following components: Service cost-benefits earned during the period $ 138 $ 1,624 $ 1,103 Interest cost on projected benefit obligation 2,016 1,731 1,518 Amortization of net obligation at transition — — — Amortization of prior service cost — (28) (58) Recognized net actuarial loss 10 (86) 254 Amortization of loss/(gain) (466) (114) — Recognition of pension service cost to due amendment — 2,141 — Net periodic pension cost $ 1,698 $ 5,268 $ 2,817
Assumptions Used in Accounting for Plans	The following table sets forth assumptions used in accounting for the plans: Year Ended December 31, 2023 2022 2021 Discount rate used to calculate benefit obligation 5.01 % 5.23 % 2.74 % Discount rate used to calculate net periodic pension cost 5.23 % 2.74 % 2.40 % Average annual increase in executive compensation — % — % 3.25 % Average annual increase in director compensation — % — % — %
Expected Benefit Payments to Participants and Estimated Contributions to be Made by Company	The following table sets forth the expected benefit payments to participants and estimated contributions to be made by the Company under the supplemental retirement plans for the years indicated: (in thousands) Expected Benefit Estimated 2024 $ 2,736 $ 2,736 2025 2,906 2,906 2026 2,895 2,895 2027 2,916 2,916 2028 2,885 2,885 2028-2032 18,580 18,580

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2023
Related Party Transactions [Abstract]
Summary of Activity in Lending Transactions	The following table summarizes the activity in these loans for the periods indicated: (in thousands) Balance January 1, 2022 $ 6,316 Advances/new loans 11,960 Removed/payments (6,892) Balance December 31, 2022 11,384 Advances/new loans — Removed/payments (9,851) Balance December 31, 2023 $ 1,533

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	12 Months Ended
	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Recorded Amount of Assets and Liabilities Measured at Fair Value on Recurring Basis	The tables below presents the recorded amount of assets and liabilities measured at fair value on a recurring basis (in thousands): Fair value at December 31, 2023 Total Level 1 Level 2 Level 3 Marketable equity securities $ 2,634 $ 2,634 Debt securities available for sale: Obligations of U.S. government agencies 1,221,737 1,221,737 Obligations of states and political subdivisions 236,375 236,375 Corporate bonds 5,602 5,602 Asset backed securities 355,281 355,281 Non-agency collateralized mortgage obligations 333,509 333,509 Loans held for sale 458 458 Mortgage servicing rights 6,606 6,606 Total assets measured at fair value $ 2,162,202 $ 2,634 $ 2,152,962 $ 6,606 Fair value at December 31, 2022 Total Level 1 Level 2 Level 3 Marketable equity securities $ 2,598 $ 2,598 $ — $ — Debt securities available for sale: Obligations of U.S. government agencies 1,372,769 — 1,372,769 — Obligations of states and political subdivisions 293,205 — 293,205 — Corporate bonds 5,751 — 5,751 — Asset backed securities 439,767 — 439,767 — Non-agency collateralized mortgage obligation 340,946 — 340,946 — Loans held for sale 1,846 — 1,846 — Mortgage servicing rights 6,712 — — 6,712 Total assets measured at fair value $ 2,463,594 $ 2,598 $ 2,454,284 $ 6,712
Reconciliation of Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Level 3) on Recurring Basis	The following table provides a reconciliation of assets and liabilities measured at fair value using significant unobservable inputs (Level 3) on a recurring basis during the years ended December 31, 2023, 2022, and 2021. Had there been any transfer into or out of Level 3 during 2023, 2022, or 2021, the amount included in the “Transfers into (out of) Level 3” column would represent the beginning balance of an item in the period (interim quarter) during which it was transferred (in thousands): Year ended December 31, Beginning Transfers Change Issuances Ending 2023: Mortgage servicing rights $ 6,712 — $ (506) $ 400 $ 6,606 2022: Mortgage servicing rights $ 5,874 — $ 301 $ 537 $ 6,712 2021: Mortgage servicing rights $ 5,092 — $ (872) $ 1,654 $ 5,874
Quantitative Information about Recurring Level 3 Fair Value Measurements	The following table present quantitative information about recurring Level 3 fair value measurements at December 31, 2023 and 2022: December 31, 2023 Fair Value Valuation Unobservable Range, Mortgage Servicing Rights $6,606 Discounted Constant 6%-13%, 7% Discount rate 10%-14%, 12% December 31, 2022 Mortgage Servicing Rights $6,712 Discounted Constant 7%-14%, 8% Discount rate 10%-14%, 12%
Assets and Liabilities Measured at Fair Value on Nonrecurring Basis	The tables below present the recorded amount of assets and liabilities measured at fair value on a nonrecurring basis, as of the dates indicated, that had a write-down or an additional allowance provided during the periods indicated. December 31, 2023 Total Level 1 Level 2 Level 3 Fair value: Individually evaluated loans $ 4,175 — — $ 4,175 Real estate owned 50 — — 50 Total assets measured at fair value $ 4,225 — — $ 4,225 December 31, 2022 Total Level 1 Level 2 Level 3 Fair value: Individually evaluated loans $ 5,719 — — $ 5,719 Real estate owned 311 — — 311 Total assets measured at fair value $ 6,030 — — $ 6,030 The tables below present the gains (losses) resulting from non-recurring fair value adjustments of assets and liabilities for the periods indicated, regardless of whether the asset is still being held at fair value at period end (in thousands): December 31, 2023 2022 Individually evaluated loans $ (4,498) $ (2,283) Real estate owned (312) 481 Total losses from non-recurring measurements $ (4,810) $ (1,802)
Quantitative Information about Level 3 Fair Value Measurements for Financial Instruments Measured at Fair Value on Nonrecurring Basis	The following tables present quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at December 31, 2023 and 2022: December 31, 2023 Fair Value Valuation Technique Unobservable Inputs Range, Individually evaluated loans $ 4,175 Sales comparison Adjustment for differences between Not meaningful; Real estate owned (Commercial) $ 50 Sales comparison Adjustment for differences between Not meaningful; December 31, 2022 Fair Value Valuation Technique Unobservable Inputs Range, Individually evaluated loans $ 5,719 Sales comparison Adjustment for differences between Not meaningful; Real estate owned (Residential) $ 311 Sales comparison Adjustment for differences between Not meaningful;
Estimated Fair Values of Financial Instruments that are Reported at Amortized Cost in Consolidated Balance Sheets	The estimated fair values of financial instruments that are reported at amortized cost in the Corporation’s consolidated balance sheets, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value, were as follows (in thousands): December 31, 2023 December 31, 2022 Carrying Fair Carrying Fair Financial assets: Level 1 inputs: Cash and due from banks $ 81,626 $ 81,626 $ 96,323 $ 96,323 Cash at Federal Reserve and other banks 17,075 17,075 10,907 10,907 Level 2 inputs: Securities held to maturity 133,494 125,126 160,983 149,938 Restricted equity securities 17,250 n/a 17,250 n/a Level 3 inputs: Loans, net 6,672,948 6,278,577 6,344,767 6,153,155 Financial liabilities: Level 2 inputs: Deposits 7,834,038 7,828,554 8,329,013 8,321,517 Other borrowings 632,582 632,582 264,605 264,605 Level 3 inputs: Junior subordinated debt 101,099 95,407 101,040 92,613 Contract Fair Contract Fair Off-balance sheet: Level 3 inputs: Commitments (1) $ 2,225,677 $ 22,257 $ 2,188,560 $ 21,886 Standby letters of credit (1) 38,449 385 26,599 266 Overdraft privilege commitments (1) 121,539 1,215 126,634 1,266

TriCo Bancshares Condensed Fi_2

TriCo Bancshares Condensed Financial Statements (Parent Only) (Tables)	12 Months Ended
	Dec. 31, 2023
Condensed Financial Information Disclosure [Abstract]
Condensed Balance Sheets	Condensed Balance Sheets December 31, December 31, (In thousands) Assets Cash and cash equivalents $ 6,356 $ 7,987 Investment in Tri Counties Bank 1,253,492 1,138,429 Other assets 1,872 1,818 Total assets $ 1,261,720 $ 1,148,234 Liabilities and shareholders’ equity Other liabilities $ 939 $ 778 Junior subordinated debt 101,099 101,040 Total liabilities 102,038 101,818 Shareholders’ equity: Preferred stock, no par value: 1,000,000 shares authorized, zero issued and outstanding at December 31, 2023 and 2022 — — Common stock, no par value: authorized 50,000,000 shares; issued and outstanding 33,268,102 and 33,331,513 shares at December 31, 2023 and 2022, respectively 697,349 697,448 Retained earnings 615,502 542,873 Accumulated other comprehensive loss, net (153,169) (193,905) Total shareholders’ equity 1,159,682 1,046,416 Total liabilities and shareholders’ equity $ 1,261,720 $ 1,148,234
Condensed Statements of Income	Condensed Statements of Income Year Ended December 31, 2023 2022 2021 (In thousands) Net interest expense $ (6,878) $ (4,385) $ (2,128) Administration expense (1,096) (816) (985) Loss before equity in net income of Tri Counties Bank (7,974) (5,201) (3,113) Equity in net income of Tri Counties Bank: Distributed 52,805 64,188 31,571 Undistributed 70,202 64,896 88,289 Income tax benefit 2,357 1,536 908 Net income $ 117,390 $ 125,419 $ 117,655
Condensed Statements of Comprehensive Income	Condensed Statements of Comprehensive Income (Loss) Year Ended December 31, 2023 2022 2021 (In thousands) Net income $ 117,390 $ 125,419 $ 117,655 Other comprehensive income (loss), net of tax: Increase (decrease) in unrealized gains on available for sale securities arising during the period 41,365 (204,376) (13,788) Change in minimum pension liability (263) 8,101 2,602 Change in joint beneficiary agreement liability (366) 1,389 (113) Other comprehensive income (loss) 40,736 (194,886) (11,299) Comprehensive income (loss) $ 158,126 $ (69,467) $ 106,356
Condensed Statements of Cash Flows	Condensed Statements of Cash Flows Year Ended December 31, 2023 2022 2021 (In thousands) Operating activities: Net income $ 117,390 $ 125,419 $ 117,655 Adjustments to reconcile net income to net cash provided by operating activities: Undistributed equity in earnings of Tri Counties Bank (70,202) (64,896) (88,289) Equity compensation vesting expense 4,125 3,869 2,638 Net change in other assets and liabilities (3,959) (3,834) (6,427) Net cash provided by operating activities 47,354 60,558 25,577 Investing activities: Sales or maturities of investments — 4,234 — Financing activities: Issuance of common stock through option exercise 156 1,190 144 Repurchase of common stock (9,240) (27,148) (4,344) Cash dividends paid — common (39,901) (35,797) (29,724) Net cash used for financing activities (48,985) (61,755) (33,924) Net change in cash and cash equivalents (1,631) 3,037 (8,347) Cash and cash equivalents at beginning of year 7,987 4,950 13,297 Cash and cash equivalents at end of year $ 6,356 $ 7,987 $ 4,950

Regulatory Matters (Tables)

Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2023
Regulated Operations [Abstract]
Actual and Required Capital Ratios of Bank	Actual Required for Capital Adequacy Purposes Required to be (in thousands) Amount Ratio Amount Ratio Amount Ratio As of December 31, 2023: Total Capital (to Risk Weighted Assets): Consolidated $ 1,196,106 14.73 % $ 852,850 10.50 % N/A N/A Tri Counties Bank $ 1,190,542 14.66 % $ 852,648 10.50 % $ 812,046 10.00 % Tier 1 Capital (to Risk Weighted Assets): Consolidated $ 1,052,063 12.95 % $ 690,402 8.50 % N/A N/A Tri Counties Bank $ 1,088,717 13.41 % $ 690,239 8.50 % $ 649,637 8.00 % Common equity Tier 1 Capital (to Risk Weighted Assets): Consolidated $ 994,907 12.25 % $ 568,566 7.00 % N/A N/A Tri Counties Bank $ 1,088,717 13.41 % $ 568,432 7.00 % $ 527,830 6.50 % Tier 1 Capital (to Average Assets): Consolidated $ 1,052,063 10.75 % $ 391,620 4.00 % N/A N/A Tri Counties Bank $ 1,088,717 11.12 % $ 391,574 4.00 % $ 489,468 5.00 % Actual Required for Capital Adequacy Purposes Required to be (in thousands) Amount Ratio Amount Ratio Amount Ratio As of December 31, 2022: Total Capital (to Risk Weighted Assets): Consolidated $ 1,115,257 14.19 % $ 825,234 10.50 % N/A N/A Tri Counties Bank $ 1,107,941 14.10 % $ 825,039 10.50 % $ 785,751 10.00 % Tier 1 Capital (to Risk Weighted Assets): Consolidated $ 974,325 12.40 % $ 668,047 8.50 % N/A N/A Tri Counties Bank $ 1,009,577 12.85 % $ 667,888 8.50 % $ 628,601 8.00 % Common equity Tier 1 Capital (to Risk Weighted Assets): Consolidated $ 917,565 11.67 % $ 550,156 7.00 % N/A N/A Tri Counties Bank $ 1,009,577 12.85 % $ 550,026 7.00 % $ 510,738 6.50 % Tier 1 Capital (to Average Assets): Consolidated $ 974,325 10.14 % $ 384,337 4.00 % N/A N/A Tri Counties Bank $ 1,009,577 10.51 % $ 384,146 4.00 % $ 480,183 5.00 %

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2023 USD ($) office trust segment county	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Significant Of Accounting Policies [Line Items]
Number of subsidiary business trusts (in trusts) | trust	5
Number of loan production offices (in offices) | office	2
Company's investments in the trusts	$ 1,800,000
Number of business segments (in segments) | segment	1
Accrued interest write off	$ 0	$ 0	$ 0
Credit losses recognized	0	0	0
Credit loss	$ 0	$ 0	$ 0
Minimum
Significant Of Accounting Policies [Line Items]
Loans held-for-sale, term	5 years
Regulatory liability, amortization period	15 years
Maximum
Significant Of Accounting Policies [Line Items]
Loans held-for-sale, term	10 years
Regulatory liability, amortization period	30 years
Furniture and equipment | Minimum
Significant Of Accounting Policies [Line Items]
Estimated useful lives of the related assets or lease terms	3 years
Furniture and equipment | Maximum
Significant Of Accounting Policies [Line Items]
Estimated useful lives of the related assets or lease terms	10 years
Land improvements and buildings | Minimum
Significant Of Accounting Policies [Line Items]
Estimated useful lives of the related assets or lease terms	15 years
Land improvements and buildings | Maximum
Significant Of Accounting Policies [Line Items]
Estimated useful lives of the related assets or lease terms	40 years
North Valley Bancorp
Significant Of Accounting Policies [Line Items]
Number of subsidiary business trusts (in trusts) | trust	3
California
Significant Of Accounting Policies [Line Items]
Number of counties (in counties) | county	31

Business Combinations - Additio

Business Combinations - Additional Information (Detail) - Valley Republic Bancorp $ / shares in Units, $ in Thousands	Mar. 25, 2022 USD ($) $ / shares shares
Business Acquisition [Line Items]
Total consideration value	$ 174,016
Share price (in dollars per share) | $ / shares	$ 42.48
Issue of common stock (in shares) | shares	4,105,518
Settlement of stock option awards	$ 431

Business Combinations - Schedul

Business Combinations - Schedule of Fair Value of Consideration Transferred, Identifiable Net Assets Acquired and Resulting Goodwill (Detail) - USD ($) $ in Thousands	Mar. 25, 2022	Dec. 31, 2023	Dec. 31, 2022
Liabilities assumed:
Goodwill recognized		$ 304,442	$ 304,442
Valley Republic Bancorp
Business Combination, Consideration Transferred [Abstract]
Fair value of shares issued	$ 173,585
Cash consideration	431
Total fair value of consideration transferred	174,016
Assets acquired:
Cash and cash equivalents	427,314
Securities available for sale	109,716
Loans and leases	771,353
Premises and equipment	4,658
Cash value of life insurance	13,609
Core deposit intangible	10,635
Other assets	29,744
Total assets acquired	1,367,029
Liabilities assumed:
Deposits	(1,215,479)
Subordinated debt	(47,236)
SERP liability	(3,352)
Other liabilities	(10,516)
Total liabilities assumed	(1,276,583)
Total net assets acquired	90,446
Goodwill recognized	$ 83,570

Investment Securities - Amortiz

Investment Securities - Amortized Cost and Estimated Fair Values of Investments Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Debt Securities Available for Sale
Amortized Cost	$ 2,384,325	$ 2,742,987
Gross Unrealized Gains	525	421
Gross Unrealized Losses	(232,346)	(290,970)
Estimated Fair Value	2,152,504	2,452,438
Debt Securities Held to Maturity
Amortized Cost	133,494	160,983
Gross Unrealized Gains	6	15
Gross Unrealized Losses	(8,374)	(11,060)
Estimated Fair Value	125,126	149,938
Obligations of U.S. government agencies
Debt Securities Available for Sale
Amortized Cost	1,386,772	1,568,408
Gross Unrealized Gains	2	3
Gross Unrealized Losses	(165,037)	(195,642)
Estimated Fair Value	1,221,737	1,372,769
Debt Securities Held to Maturity
Amortized Cost	130,823	154,830
Gross Unrealized Gains	0	2
Gross Unrealized Losses	(8,331)	(11,013)
Estimated Fair Value	122,492	143,819
Obligations of states and political subdivisions
Debt Securities Available for Sale
Amortized Cost	262,879	332,625
Gross Unrealized Gains	268	401
Gross Unrealized Losses	(26,772)	(39,821)
Estimated Fair Value	236,375	293,205
Debt Securities Held to Maturity
Amortized Cost	2,671	6,153
Gross Unrealized Gains	6	13
Gross Unrealized Losses	(43)	(47)
Estimated Fair Value	2,634	6,119
Corporate bonds
Debt Securities Available for Sale
Amortized Cost	6,173	6,164
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(571)	(413)
Estimated Fair Value	5,602	5,751
Asset backed securities
Debt Securities Available for Sale
Amortized Cost	359,214	454,943
Gross Unrealized Gains	255	17
Gross Unrealized Losses	(4,188)	(15,193)
Estimated Fair Value	355,281	439,767
Non-agency collateralized mortgage obligations
Debt Securities Available for Sale
Amortized Cost	369,287	380,847
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(35,778)	(39,901)
Estimated Fair Value	$ 333,509	$ 340,946

Investment Securities - Additio

Investment Securities - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2023 USD ($) investmentSecurity securityLoan	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Investment Securities [Line Items]
Credit loss	$ 0	$ 0	$ 0
Allowance for credit loss	0	0
Realized loss	300,000
Proceeds from sale of available for sale securities	71,024,000	0	$ 0
Securities pledged as collateral	702,200,000	$ 595,800,000
Residential real estate mortgage-backed securities	$ 1,400,000,000
Life of mortgage-backed securities	6 years 8 months 12 days
Obligations of U.S. government agencies
Investment Securities [Line Items]
Available for sale securities in unrealized loss position | investmentSecurity	165
Percentage of aggregate depreciation in unrealized losses	(11.90%)
Obligations of states and political subdivisions
Investment Securities [Line Items]
Available for sale securities in unrealized loss position | investmentSecurity	153
Percentage of aggregate depreciation in unrealized losses	(10.73%)
Corporate bonds
Investment Securities [Line Items]
Available for sale securities in unrealized loss position | securityLoan	6
Percentage of aggregate depreciation in unrealized losses	(9.25%)
Impairment losses recognized	$ 0
Allowance for credit loss	$ 0
Asset backed securities
Investment Securities [Line Items]
Available for sale securities in unrealized loss position | investmentSecurity	35
Percentage of aggregate depreciation in unrealized losses	(1.47%)
Non-agency collateralized mortgage obligations
Investment Securities [Line Items]
Available for sale securities in unrealized loss position | securityLoan	24
Percentage of aggregate depreciation in unrealized losses	(9.69%)
Impairment losses recognized	$ 0
Allowance for credit loss	$ 0

Investment Securities - Amort_2

Investment Securities - Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Amortized Cost
Due in one year	$ 83,239
Due after one year through five years	47,769
Due after five years through ten years	367,733
Due after ten years	1,885,584
Amortized Cost	2,384,325	$ 2,742,987
Estimated Fair Value
Due in one year	81,775
Due after one year through five years	44,932
Due after five years through ten years	354,333
Due after ten years	1,671,464
Totals	2,152,504	2,452,438
Amortized Cost
Due in one year	0
Due after one year through five years	5,829
Due after five years through ten years	89,070
Due after ten years	38,595
Amortized Cost	133,494	160,983
Estimated Fair Value
Due in one year	0
Due after one year through five years	5,640
Due after five years through ten years	83,726
Due after ten years	35,760
Totals	$ 125,126	$ 149,938

Investment Securities - Gross U

Investment Securities - Gross Unrealized Losses on Investment Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Debt Securities Available for Sale
Less than 12 months, Fair Value	$ 66,657	$ 1,218,843
Less than 12 months, Unrealized Loss	(751)	(193,869)
12 months or more, Fair Value	1,997,383	1,185,676
12 months or more, Unrealized Loss	(231,595)	(97,101)
Total, Fair Value	2,064,040	2,404,519
Total, Unrealized Loss	(232,346)	(290,970)
Debt Securities Held to Maturity
Less than 12 months, Fair Value	0	0
Less than 12 Months, Unrealized Loss	0	0
12 months or more, Fair Value	123,271	148,107
12 months or more, Unrealized Loss	(8,374)	(11,060)
Total, Fair Value	123,271	148,107
Total, Unrealized Loss	(8,374)	(11,060)
Obligations of U.S. government agencies
Debt Securities Available for Sale
Less than 12 months, Fair Value	224	766,612
Less than 12 months, Unrealized Loss	0	(134,234)
12 months or more, Fair Value	1,221,320	605,615
12 months or more, Unrealized Loss	(165,037)	(61,408)
Total, Fair Value	1,221,544	1,372,227
Total, Unrealized Loss	(165,037)	(195,642)
Debt Securities Held to Maturity
Less than 12 months, Fair Value	0	0
Less than 12 Months, Unrealized Loss	0	0
12 months or more, Fair Value	122,259	143,577
12 months or more, Unrealized Loss	(8,331)	(11,013)
Total, Fair Value	122,259	143,577
Total, Unrealized Loss	(8,331)	(11,013)
Obligations of states and political subdivisions
Debt Securities Available for Sale
Less than 12 months, Fair Value	6,229	43,282
Less than 12 months, Unrealized Loss	(75)	(12,917)
12 months or more, Fair Value	216,497	219,532
12 months or more, Unrealized Loss	(26,697)	(26,904)
Total, Fair Value	222,726	262,814
Total, Unrealized Loss	(26,772)	(39,821)
Debt Securities Held to Maturity
Less than 12 months, Fair Value	0	0
Less than 12 Months, Unrealized Loss	0	0
12 months or more, Fair Value	1,012	4,530
12 months or more, Unrealized Loss	(43)	(47)
Total, Fair Value	1,012	4,530
Total, Unrealized Loss	(43)	(47)
Corporate bonds
Debt Securities Available for Sale
Less than 12 months, Fair Value	0	0
Less than 12 months, Unrealized Loss	0	0
12 months or more, Fair Value	5,602	5,751
12 months or more, Unrealized Loss	(571)	(413)
Total, Fair Value	5,602	5,751
Total, Unrealized Loss	(571)	(413)
Asset backed securities
Debt Securities Available for Sale
Less than 12 months, Fair Value	15,928	205,329
Less than 12 months, Unrealized Loss	(93)	(10,238)
12 months or more, Fair Value	264,731	231,703
12 months or more, Unrealized Loss	(4,095)	(4,955)
Total, Fair Value	280,659	437,032
Total, Unrealized Loss	(4,188)	(15,193)
Non-agency collateralized mortgage obligations
Debt Securities Available for Sale
Less than 12 months, Fair Value	44,276	203,620
Less than 12 months, Unrealized Loss	(583)	(36,480)
12 months or more, Fair Value	289,233	123,075
12 months or more, Unrealized Loss	(35,195)	(3,421)
Total, Fair Value	333,509	326,695
Total, Unrealized Loss	$ (35,778)	$ (39,901)

Investment Securities - Amort_3

Investment Securities - Amortized Cost of Debt Securities Held-to-Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
AAA/AA/A
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]
Securities held to maturity	$ 133,494	$ 160,983
BBB/BB/B
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]
Securities held to maturity	0	0
Obligations of U.S. government agencies | AAA/AA/A
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]
Securities held to maturity	130,823	154,830
Obligations of U.S. government agencies | BBB/BB/B
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]
Securities held to maturity	0	0
Obligations of states and political subdivisions | AAA/AA/A
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]
Securities held to maturity	2,671	6,153
Obligations of states and political subdivisions | BBB/BB/B
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]
Securities held to maturity	$ 0	$ 0

Loans - Summary of Loan Balance

Loans - Summary of Loan Balances (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Loans and Leases Receivable Disclosure [Line Items]
Total	$ 6,794,470	$ 6,450,447
Total principal balance of loans owed, net of charge-offs	6,834,935	6,496,210
Unamortized net deferred loan fees	(15,826)	(15,275)
Discounts to principal balance of loans owed, net of charge-offs	(24,639)	(30,488)
Allowance for credit losses	(121,522)	(105,680)	$ (85,376)	$ (91,847)
Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Total	4,394,802	4,359,083
Allowance for credit losses	(68,864)	(61,381)	(51,140)	(53,693)
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Total	1,313,268	1,240,743
Allowance for credit losses	(27,453)	(24,639)	(23,474)	(25,148)
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Total	586,455	569,921
Allowance for credit losses	(12,750)	(13,597)	(3,862)	(4,252)
Construction
Loans and Leases Receivable Disclosure [Line Items]
Total	347,198	211,560
Allowance for credit losses	(8,856)	(5,142)	(5,667)	(7,540)
Agriculture production
Loans and Leases Receivable Disclosure [Line Items]
Total	144,497	61,414
Allowance for credit losses	(3,589)	(906)	(1,215)	(1,209)
Leases
Loans and Leases Receivable Disclosure [Line Items]
Total	8,250	7,726
Allowance for credit losses	(10)	(15)	(18)	(5)
CRE non-owner occupied | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Total	2,217,806	2,149,725
Allowance for credit losses	(35,077)	(30,962)	(25,739)	(29,380)
CRE owner occupied | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Total	956,440	984,807
Allowance for credit losses	(15,081)	(14,014)	(10,691)	(10,861)
Multifamily | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Total	949,502	944,537
Allowance for credit losses	(14,418)	(13,132)	(12,395)	(11,472)
Farmland | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Total	271,054	280,014
Allowance for credit losses	(4,288)	(3,273)	(2,315)	(1,980)
SFR 1-4 1st DT liens | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Total	883,438	790,349
SFR HELOCs and junior liens | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Total	356,813	393,666
Allowance for credit losses	(10,273)	(11,413)	(10,510)	(11,771)
Other | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Total	73,017	56,728
Allowance for credit losses	$ (3,171)	$ (1,958)	$ (2,241)	$ (3,260)

Loans - Narrative (Details)

Loans - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 6,794,470	$ 6,450,447
Loans, including fees	356,710	285,375	$ 242,269
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Loans	586,455	569,921
Commercial and industrial | Payment Protection Program (PPP)
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 1,100	1,600
Loans, including fees		$ 2,100	$ 14,100

Allowance for Credit Losses - A

Allowance for Credit Losses - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Loans and Leases Receivable Disclosure [Line Items]
Allowance for credit loss	$ 121,522	$ 105,680	$ 85,376	$ 91,847
Provision for credit losses	22,455	17,945	(7,165)
Threshold for loan analysis	1,000
Interest lost on nonaccrual loans	2,500	1,400	2,200
Interest income on nonaccrual loans	1,000	$ 600	$ 500
Qualitative Reserves
Loans and Leases Receivable Disclosure [Line Items]
Provision for credit losses	13,500
Quantiative Reserves
Loans and Leases Receivable Disclosure [Line Items]
Provision for credit losses	2,400
Net Charge-offs
Loans and Leases Receivable Disclosure [Line Items]
Provision for credit losses	$ 6,600
Minimum
Loans and Leases Receivable Disclosure [Line Items]
Valuation frequency period	3 months
Maximum
Loans and Leases Receivable Disclosure [Line Items]
Valuation frequency period	12 months

Allowance for Credit Losses - S

Allowance for Credit Losses - Summary of Activity in Allowance for Loan Losses (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss	$ 121,522	$ 105,680	$ 85,376	$ 91,847
Total allowance for credit losses
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss	118,430	103,266
Qualitative and forecast factor allowance
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss	84,291	70,777
Quantitative (Cohort) model allowance
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss	34,139	32,489
Allowance for individually evaluated loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss	$ 3,092	$ 2,414

Allowance for Credit Losses -_2

Allowance for Credit Losses - Summary of Loans and Lease Purchased and Acquired with Credit Deterioration (Details) $ in Thousands	Mar. 25, 2022 USD ($)
Financing Receivable, Past Due [Line Items]
Par value	$ 68,513
ACL at acquisition	(2,037)
Non-credit discount	(2,956)
Purchase price	63,520
Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Par value	27,237
ACL at acquisition	(1,573)
Non-credit discount	(2,305)
Purchase price	23,359
Consumer
Financing Receivable, Past Due [Line Items]
Par value	3,877
ACL at acquisition	(144)
Non-credit discount	(360)
Purchase price	3,373
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Par value	2,674
ACL at acquisition	(81)
Non-credit discount	(47)
Purchase price	2,546
Construction
Financing Receivable, Past Due [Line Items]
Par value	25,645
ACL at acquisition	(201)
Non-credit discount	(232)
Purchase price	25,212
Agriculture production
Financing Receivable, Past Due [Line Items]
Par value	9,080
ACL at acquisition	(38)
Non-credit discount	(12)
Purchase price	$ 9,030

Allowance for Credit Losses -_3

Allowance for Credit Losses - Summary of Activity in Allowance for Loan Losses (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	$ 105,680	$ 85,376	$ 91,847
Charge-offs	(8,140)	(1,585)	(2,392)
Recoveries	1,527	1,907	3,086
Provision for (Benefit from) Credit Losses	22,455	17,945	(7,165)
Ending  Balance	121,522	105,680	85,376
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning Balance	4,315	3,790
Charge-offs	0	0	0
Recoveries	0	0	0
Provision for (Benefit from) Credit Losses	1,535	525
Ending  Balance	5,850	4,315	3,790
Credit Loss [Roll Forward]
Beginning Balance	109,995	89,166	95,247
Charge-offs	(8,140)	(1,585)	(2,392)
Recoveries	1,527	1,907	3,086
Provision for (Benefit from) Credit Losses	23,990	18,470	(6,775)
Ending  Balance	127,372	109,995	89,166
Commercial loans
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning Balance			3,400
Provision for (Benefit from) Credit Losses			390
Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	2,037
Ending  Balance		2,037
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning Balance	0
Ending  Balance		0
Credit Loss [Roll Forward]
Beginning Balance	2,037
Ending  Balance		2,037
Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	61,381	51,140	53,693
Charge-offs	(3,637)	(294)	(144)
Recoveries	2	3	806
Provision for (Benefit from) Credit Losses	11,118	8,959	(3,215)
Ending  Balance	68,864	61,381	51,140
Commercial real estate | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	1,573
Ending  Balance		1,573
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	24,639	23,474	25,148
Charge-offs	(624)	(594)	(751)
Recoveries	1,175	743	1,501
Provision for (Benefit from) Credit Losses	2,263	872	(2,424)
Ending  Balance	27,453	24,639	23,474
Consumer | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	144
Ending  Balance		144
Commercial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	13,597	3,862	4,252
Charge-offs	(3,879)	(697)	(1,470)
Recoveries	316	1,157	755
Provision for (Benefit from) Credit Losses	2,716	9,194	325
Ending  Balance	12,750	13,597	3,862
Commercial and industrial | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	81
Ending  Balance		81
Construction
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	5,142	5,667	7,540
Charge-offs	0	0	(27)
Recoveries	0	0	0
Provision for (Benefit from) Credit Losses	3,714	(726)	(1,846)
Ending  Balance	8,856	5,142	5,667
Construction | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	201
Ending  Balance		201
Agriculture production
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	906	1,215	1,209
Charge-offs	0	0	0
Recoveries	34	4	24
Provision for (Benefit from) Credit Losses	2,649	(351)	(18)
Ending  Balance	3,589	906	1,215
Agriculture production | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	38
Ending  Balance		38
Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	15	18	5
Charge-offs	0	0	0
Recoveries	0	0	0
Provision for (Benefit from) Credit Losses	(5)	(3)	13
Ending  Balance	10	15	18
Leases | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	0
Ending  Balance		0
CRE non-owner occupied | Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	30,962	25,739	29,380
Charge-offs	0	0	0
Recoveries	0	1	12
Provision for (Benefit from) Credit Losses	4,115	4,476	(3,653)
Ending  Balance	35,077	30,962	25,739
CRE non-owner occupied | Commercial real estate | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	746
Ending  Balance		746
CRE owner occupied | Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	14,014	10,691	10,861
Charge-offs	(3,637)	0	(18)
Recoveries	2	2	794
Provision for (Benefit from) Credit Losses	4,702	3,258	(946)
Ending  Balance	15,081	14,014	10,691
CRE owner occupied | Commercial real estate | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	63
Ending  Balance		63
Multifamily | Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	13,132	12,395	11,472
Charge-offs	0	0	0
Recoveries	0	0	0
Provision for (Benefit from) Credit Losses	1,286	737	923
Ending  Balance	14,418	13,132	12,395
Multifamily | Commercial real estate | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	0
Ending  Balance		0
Farmland | Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	3,273	2,315	1,980
Charge-offs	0	(294)	(126)
Recoveries	0	0	0
Provision for (Benefit from) Credit Losses	1,015	488	461
Ending  Balance	4,288	3,273	2,315
Farmland | Commercial real estate | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	764
Ending  Balance		764
SFR 1-4 1st DT liens | Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	11,268	10,723	10,117
Charge-offs	0	0	(145)
Recoveries	262	79	13
Provision for (Benefit from) Credit Losses	2,479	322	738
Ending  Balance	14,009	11,268	10,723
SFR 1-4 1st DT liens | Consumer | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	144
Ending  Balance		144
SFR HELOCs and junior liens | Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	11,413	10,510	11,771
Charge-offs	(66)	(22)	(29)
Recoveries	723	429	1,127
Provision for (Benefit from) Credit Losses	(1,797)	496	(2,359)
Ending  Balance	10,273	11,413	10,510
SFR HELOCs and junior liens | Consumer | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	0
Ending  Balance		0
Other | Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	1,958	2,241	3,260
Charge-offs	(558)	(572)	(577)
Recoveries	190	235	361
Provision for (Benefit from) Credit Losses	1,581	54	(803)
Ending  Balance	3,171	1,958	$ 2,241
Other | Consumer | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	$ 0
Ending  Balance		$ 0

Allowance for Credit Losses -_4

Allowance for Credit Losses - Schedule Credit Quality Indicators (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	$ 609,083	$ 1,246,402
Fiscal year before latest fiscal year	1,282,292	1,284,725
Two years before latest fiscal year	1,245,469	607,121
Three years before latest fiscal year	561,665	526,167
Four years before latest fiscal year	459,384	378,767
Prior	1,538,371	1,383,071
Revolving Loans Amortized Cost Basis	1,086,036	1,010,395
Revolving Loans Converted to Term	12,170	13,799
Total	6,794,470	6,450,447
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Current fiscal year	529
Fiscal year before latest fiscal year	369
Two years before latest fiscal year	240
Three years before latest fiscal year	3,701
Four years before latest fiscal year	39
Prior	2,237
Revolving Loans Amortized Cost Basis	941
Revolving Loans Converted to Term	84
Total	8,140
Commercial real estate
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Total	4,394,802	4,359,083
Consumer
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Total	1,313,268	1,240,743
Commercial and industrial
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	70,963	130,035
Fiscal year before latest fiscal year	85,861	66,247
Two years before latest fiscal year	52,474	22,946
Three years before latest fiscal year	9,690	23,194
Four years before latest fiscal year	10,197	7,799
Prior	8,576	6,430
Revolving Loans Amortized Cost Basis	348,302	312,686
Revolving Loans Converted to Term	392	584
Total	586,455	569,921
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Current fiscal year	153
Fiscal year before latest fiscal year	287
Two years before latest fiscal year	240
Three years before latest fiscal year	2,285
Four years before latest fiscal year	0
Prior	0
Revolving Loans Amortized Cost Basis	896
Revolving Loans Converted to Term	18
Total	3,879
Construction
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	56,378	72,840
Fiscal year before latest fiscal year	146,876	72,308
Two years before latest fiscal year	85,144	43,409
Three years before latest fiscal year	47,632	15,815
Four years before latest fiscal year	4,650	2,159
Prior	6,518	5,029
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	347,198	211,560
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Current fiscal year	0
Fiscal year before latest fiscal year	0
Two years before latest fiscal year	0
Three years before latest fiscal year	0
Four years before latest fiscal year	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	0
Agriculture production
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	945	3,414
Fiscal year before latest fiscal year	2,932	2,777
Two years before latest fiscal year	2,138	1,149
Three years before latest fiscal year	572	1,104
Four years before latest fiscal year	620	8,992
Prior	8,491	1,089
Revolving Loans Amortized Cost Basis	128,799	42,889
Revolving Loans Converted to Term	0	0
Total	144,497	61,414
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Current fiscal year	0
Fiscal year before latest fiscal year	0
Two years before latest fiscal year	0
Three years before latest fiscal year	0
Four years before latest fiscal year	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	0
Leases
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	8,250	7,726
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	8,250	7,726
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Current fiscal year	0
Fiscal year before latest fiscal year	0
Two years before latest fiscal year	0
Three years before latest fiscal year	0
Four years before latest fiscal year	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	0
CRE non-owner occupied | Commercial real estate
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	180,326	399,910
Fiscal year before latest fiscal year	415,192	305,500
Two years before latest fiscal year	290,977	153,728
Three years before latest fiscal year	142,937	241,692
Four years before latest fiscal year	225,640	148,901
Prior	819,589	774,854
Revolving Loans Amortized Cost Basis	143,145	125,140
Revolving Loans Converted to Term	0	0
Total	2,217,806	2,149,725
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Current fiscal year	0
Fiscal year before latest fiscal year	0
Two years before latest fiscal year	0
Three years before latest fiscal year	0
Four years before latest fiscal year	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	0
CRE owner occupied | Commercial real estate
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	71,288	213,445
Fiscal year before latest fiscal year	205,660	214,083
Two years before latest fiscal year	199,732	126,412
Three years before latest fiscal year	121,211	66,868
Four years before latest fiscal year	60,034	50,858
Prior	274,775	268,762
Revolving Loans Amortized Cost Basis	23,740	44,379
Revolving Loans Converted to Term	0	0
Total	956,440	984,807
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Current fiscal year	0
Fiscal year before latest fiscal year	0
Two years before latest fiscal year	0
Three years before latest fiscal year	1,380
Four years before latest fiscal year	0
Prior	2,228
Revolving Loans Amortized Cost Basis	29
Revolving Loans Converted to Term	0
Total	3,637
Multifamily | Commercial real estate
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	28,445	159,318
Fiscal year before latest fiscal year	177,032	290,170
Two years before latest fiscal year	291,574	96,937
Three years before latest fiscal year	89,106	108,586
Four years before latest fiscal year	104,108	106,287
Prior	225,767	154,250
Revolving Loans Amortized Cost Basis	33,470	28,989
Revolving Loans Converted to Term	0	0
Total	949,502	944,537
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Current fiscal year	0
Fiscal year before latest fiscal year	0
Two years before latest fiscal year	0
Three years before latest fiscal year	0
Four years before latest fiscal year	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	0
Farmland | Commercial real estate
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	21,830	50,206
Fiscal year before latest fiscal year	49,381	54,058
Two years before latest fiscal year	51,989	18,757
Three years before latest fiscal year	16,434	24,354
Four years before latest fiscal year	17,041	15,544
Prior	55,663	45,613
Revolving Loans Amortized Cost Basis	58,716	71,482
Revolving Loans Converted to Term	0	0
Total	271,054	280,014
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Current fiscal year	0
Fiscal year before latest fiscal year	0
Two years before latest fiscal year	0
Three years before latest fiscal year	0
Four years before latest fiscal year	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	0
SFR 1-4 1st DT liens | Consumer
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	135,812	194,933
Fiscal year before latest fiscal year	190,060	266,574
Two years before latest fiscal year	262,166	133,453
Three years before latest fiscal year	126,571	33,677
Four years before latest fiscal year	30,099	32,826
Prior	134,188	124,844
Revolving Loans Amortized Cost Basis	0	8
Revolving Loans Converted to Term	4,542	4,034
Total	883,438	790,349
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Current fiscal year	0
Fiscal year before latest fiscal year	0
Two years before latest fiscal year	0
Three years before latest fiscal year	0
Four years before latest fiscal year	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	0
SFR HELOCs and junior liens | Consumer
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	297	505
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	96	127
Revolving Loans Amortized Cost Basis	349,184	383,853
Revolving Loans Converted to Term	7,236	9,181
Total	356,813	393,666
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Current fiscal year	0
Fiscal year before latest fiscal year	0
Two years before latest fiscal year	0
Three years before latest fiscal year	0
Four years before latest fiscal year	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	66
Total	66
Other | Consumer
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	34,549	14,070
Fiscal year before latest fiscal year	9,298	13,008
Two years before latest fiscal year	9,275	10,330
Three years before latest fiscal year	7,512	10,877
Four years before latest fiscal year	6,995	5,401
Prior	4,708	2,073
Revolving Loans Amortized Cost Basis	680	969
Revolving Loans Converted to Term	0	0
Total	73,017	56,728
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Current fiscal year	376
Fiscal year before latest fiscal year	82
Two years before latest fiscal year	0
Three years before latest fiscal year	36
Four years before latest fiscal year	39
Prior	9
Revolving Loans Amortized Cost Basis	16
Revolving Loans Converted to Term	0
Total	558
Pass
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	608,770	1,235,594
Fiscal year before latest fiscal year	1,255,416	1,264,279
Two years before latest fiscal year	1,205,360	592,002
Three years before latest fiscal year	551,257	496,716
Four years before latest fiscal year	438,305	368,729
Prior	1,483,309	1,317,334
Revolving Loans Amortized Cost Basis	1,049,903	965,422
Revolving Loans Converted to Term	10,841	11,869
Total	6,603,161	6,251,945
Pass | Commercial and industrial
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	70,930	125,710
Fiscal year before latest fiscal year	83,184	64,966
Two years before latest fiscal year	51,455	17,746
Three years before latest fiscal year	9,504	23,131
Four years before latest fiscal year	10,193	7,628
Prior	7,636	5,051
Revolving Loans Amortized Cost Basis	340,858	297,341
Revolving Loans Converted to Term	318	483
Total	574,078	542,056
Pass | Construction
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	56,378	72,840
Fiscal year before latest fiscal year	136,294	72,308
Two years before latest fiscal year	85,144	43,409
Three years before latest fiscal year	47,632	15,358
Four years before latest fiscal year	4,583	2,159
Prior	6,518	4,900
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	336,549	210,974
Pass | Agriculture production
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	945	3,414
Fiscal year before latest fiscal year	2,749	2,777
Two years before latest fiscal year	1,595	1,149
Three years before latest fiscal year	396	1,104
Four years before latest fiscal year	620	8,902
Prior	8,491	1,058
Revolving Loans Amortized Cost Basis	114,935	38,425
Revolving Loans Converted to Term	0	0
Total	129,731	56,829
Pass | Leases
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	8,250	7,726
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	8,250	7,726
Pass | CRE non-owner occupied | Commercial real estate
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	180,326	399,910
Fiscal year before latest fiscal year	413,863	304,636
Two years before latest fiscal year	290,210	152,960
Three years before latest fiscal year	137,656	221,659
Four years before latest fiscal year	206,408	147,842
Prior	792,875	748,994
Revolving Loans Amortized Cost Basis	141,686	123,794
Revolving Loans Converted to Term	0	0
Total	2,163,024	2,099,795
Pass | CRE owner occupied | Commercial real estate
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	71,288	210,101
Fiscal year before latest fiscal year	196,915	197,787
Two years before latest fiscal year	190,384	120,929
Three years before latest fiscal year	118,457	64,244
Four years before latest fiscal year	59,220	49,755
Prior	268,990	251,137
Revolving Loans Amortized Cost Basis	23,740	43,343
Revolving Loans Converted to Term	0	0
Total	928,994	937,296
Pass | Multifamily | Commercial real estate
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	28,445	159,318
Fiscal year before latest fiscal year	177,032	290,170
Two years before latest fiscal year	279,660	96,937
Three years before latest fiscal year	89,106	108,586
Four years before latest fiscal year	104,108	106,287
Prior	225,446	154,125
Revolving Loans Amortized Cost Basis	33,470	28,989
Revolving Loans Converted to Term	0	0
Total	937,267	944,412
Pass | Farmland | Commercial real estate
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	21,729	47,067
Fiscal year before latest fiscal year	46,398	53,275
Two years before latest fiscal year	37,134	16,739
Three years before latest fiscal year	16,006	18,589
Four years before latest fiscal year	16,780	12,386
Prior	41,663	34,528
Revolving Loans Amortized Cost Basis	50,857	53,684
Revolving Loans Converted to Term	0	0
Total	230,567	236,268
Pass | SFR 1-4 1st DT liens | Consumer
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	135,741	194,933
Fiscal year before latest fiscal year	189,920	265,370
Two years before latest fiscal year	260,870	131,922
Three years before latest fiscal year	125,081	33,395
Four years before latest fiscal year	29,568	28,545
Prior	126,975	115,469
Revolving Loans Amortized Cost Basis	0	8
Revolving Loans Converted to Term	4,079	2,924
Total	872,234	772,566
Pass | SFR HELOCs and junior liens | Consumer
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	297	505
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	96	127
Revolving Loans Amortized Cost Basis	343,698	378,939
Revolving Loans Converted to Term	6,444	8,462
Total	350,535	388,033
Pass | Other | Consumer
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	34,441	14,070
Fiscal year before latest fiscal year	9,061	12,990
Two years before latest fiscal year	8,908	10,211
Three years before latest fiscal year	7,419	10,650
Four years before latest fiscal year	6,825	5,225
Prior	4,619	1,945
Revolving Loans Amortized Cost Basis	659	899
Revolving Loans Converted to Term	0	0
Total	71,932	55,990
Special Mention
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	125	6,302
Fiscal year before latest fiscal year	20,754	17,236
Two years before latest fiscal year	20,212	2,109
Three years before latest fiscal year	8,408	26,230
Four years before latest fiscal year	18,111	3,681
Prior	20,070	39,328
Revolving Loans Amortized Cost Basis	15,967	31,568
Revolving Loans Converted to Term	165	546
Total	103,812	127,000
Special Mention | Commercial and industrial
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	33	3,032
Fiscal year before latest fiscal year	663	139
Two years before latest fiscal year	237	21
Three years before latest fiscal year	83	49
Four years before latest fiscal year	0	138
Prior	178	768
Revolving Loans Amortized Cost Basis	1,126	11,547
Revolving Loans Converted to Term	0	0
Total	2,320	15,694
Special Mention | Construction
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before latest fiscal year	10,582	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	10,582	0
Special Mention | Agriculture production
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before latest fiscal year	183	0
Two years before latest fiscal year	543	0
Three years before latest fiscal year	176	0
Four years before latest fiscal year	0	90
Prior	0	31
Revolving Loans Amortized Cost Basis	11,302	1,632
Revolving Loans Converted to Term	0	0
Total	12,204	1,753
Special Mention | Leases
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year		0
Fiscal year before latest fiscal year		0
Two years before latest fiscal year		0
Three years before latest fiscal year		0
Four years before latest fiscal year		0
Prior		0
Revolving Loans Amortized Cost Basis		0
Revolving Loans Converted to Term		0
Total	0	0
Special Mention | CRE non-owner occupied | Commercial real estate
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before latest fiscal year	1,329	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	5,281	20,033
Four years before latest fiscal year	17,093	0
Prior	14,174	21,681
Revolving Loans Amortized Cost Basis	1,247	1,346
Revolving Loans Converted to Term	0	0
Total	39,124	43,060
Special Mention | CRE owner occupied | Commercial real estate
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	131
Fiscal year before latest fiscal year	5,773	16,296
Two years before latest fiscal year	1,513	234
Three years before latest fiscal year	2,754	731
Four years before latest fiscal year	703	0
Prior	2,678	6,971
Revolving Loans Amortized Cost Basis	0	879
Revolving Loans Converted to Term	0	0
Total	13,421	25,242
Special Mention | Multifamily | Commercial real estate
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	11,914	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	321	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	12,235	0
Special Mention | Farmland | Commercial real estate
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	3,139
Fiscal year before latest fiscal year	2,170	783
Two years before latest fiscal year	5,802	246
Three years before latest fiscal year	51	5,000
Four years before latest fiscal year	261	0
Prior	734	3,991
Revolving Loans Amortized Cost Basis	0	14,275
Revolving Loans Converted to Term	0	0
Total	9,018	27,434
Special Mention | SFR 1-4 1st DT liens | Consumer
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	71	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	1,531
Three years before latest fiscal year	0	282
Four years before latest fiscal year	0	3,277
Prior	1,948	5,854
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	27	465
Total	2,046	11,409
Special Mention | SFR HELOCs and junior liens | Consumer
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	2,274	1,842
Revolving Loans Converted to Term	138	81
Total	2,412	1,923
Special Mention | Other | Consumer
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	21	0
Fiscal year before latest fiscal year	54	18
Two years before latest fiscal year	203	77
Three years before latest fiscal year	63	135
Four years before latest fiscal year	54	176
Prior	37	32
Revolving Loans Amortized Cost Basis	18	47
Revolving Loans Converted to Term	0	0
Total	450	485
Substandard
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	188	4,506
Fiscal year before latest fiscal year	6,122	3,210
Two years before latest fiscal year	19,897	13,010
Three years before latest fiscal year	2,000	3,221
Four years before latest fiscal year	2,968	6,357
Prior	34,992	26,409
Revolving Loans Amortized Cost Basis	20,166	13,405
Revolving Loans Converted to Term	1,164	1,384
Total	87,497	71,502
Substandard | Commercial and industrial
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	1,293
Fiscal year before latest fiscal year	2,014	1,142
Two years before latest fiscal year	782	5,179
Three years before latest fiscal year	103	14
Four years before latest fiscal year	4	33
Prior	762	611
Revolving Loans Amortized Cost Basis	6,318	3,798
Revolving Loans Converted to Term	74	101
Total	10,057	12,171
Substandard | Construction
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	457
Four years before latest fiscal year	67	0
Prior	0	129
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	67	586
Substandard | Agriculture production
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	2,562	2,832
Revolving Loans Converted to Term	0	0
Total	2,562	2,832
Substandard | Leases
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year		0
Fiscal year before latest fiscal year		0
Two years before latest fiscal year		0
Three years before latest fiscal year		0
Four years before latest fiscal year		0
Prior		0
Revolving Loans Amortized Cost Basis		0
Revolving Loans Converted to Term		0
Total	0	0
Substandard | CRE non-owner occupied | Commercial real estate
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	864
Two years before latest fiscal year	767	768
Three years before latest fiscal year	0	0
Four years before latest fiscal year	2,139	1,059
Prior	12,540	4,179
Revolving Loans Amortized Cost Basis	212	0
Revolving Loans Converted to Term	0	0
Total	15,658	6,870
Substandard | CRE owner occupied | Commercial real estate
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	3,213
Fiscal year before latest fiscal year	2,972	0
Two years before latest fiscal year	7,835	5,249
Three years before latest fiscal year	0	1,893
Four years before latest fiscal year	111	1,103
Prior	3,107	10,654
Revolving Loans Amortized Cost Basis	0	157
Revolving Loans Converted to Term	0	0
Total	14,025	22,269
Substandard | Multifamily | Commercial real estate
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	125
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	125
Substandard | Farmland | Commercial real estate
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	101	0
Fiscal year before latest fiscal year	813	0
Two years before latest fiscal year	9,053	1,772
Three years before latest fiscal year	377	765
Four years before latest fiscal year	0	3,158
Prior	13,266	7,094
Revolving Loans Amortized Cost Basis	7,859	3,523
Revolving Loans Converted to Term	0	0
Total	31,469	16,312
Substandard | SFR 1-4 1st DT liens | Consumer
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before latest fiscal year	140	1,204
Two years before latest fiscal year	1,296	0
Three years before latest fiscal year	1,490	0
Four years before latest fiscal year	531	1,004
Prior	5,265	3,521
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	436	645
Total	9,158	6,374
Substandard | SFR HELOCs and junior liens | Consumer
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	3,212	3,072
Revolving Loans Converted to Term	654	638
Total	3,866	3,710
Substandard | Other | Consumer
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	87	0
Fiscal year before latest fiscal year	183	0
Two years before latest fiscal year	164	42
Three years before latest fiscal year	30	92
Four years before latest fiscal year	116	0
Prior	52	96
Revolving Loans Amortized Cost Basis	3	23
Revolving Loans Converted to Term	0	0
Total	635	253
Doubtful/Loss
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Doubtful/Loss | Commercial and industrial
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0
Fiscal year before latest fiscal year
Two years before latest fiscal year	0
Three years before latest fiscal year	0
Four years before latest fiscal year	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	0	0
Doubtful/Loss | Construction
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Doubtful/Loss | Agriculture production
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Doubtful/Loss | Leases
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year		0
Fiscal year before latest fiscal year		0
Two years before latest fiscal year		0
Three years before latest fiscal year		0
Four years before latest fiscal year		0
Prior		0
Revolving Loans Amortized Cost Basis		0
Revolving Loans Converted to Term		0
Total	0	0
Doubtful/Loss | CRE non-owner occupied | Commercial real estate
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Doubtful/Loss | CRE owner occupied | Commercial real estate
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0
Fiscal year before latest fiscal year	0
Two years before latest fiscal year	0
Three years before latest fiscal year	0
Four years before latest fiscal year	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	0	0
Doubtful/Loss | Multifamily | Commercial real estate
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Doubtful/Loss | Farmland | Commercial real estate
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0
Fiscal year before latest fiscal year	0
Two years before latest fiscal year	0
Three years before latest fiscal year	0
Four years before latest fiscal year	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	0	0
Doubtful/Loss | SFR 1-4 1st DT liens | Consumer
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Doubtful/Loss | SFR HELOCs and junior liens | Consumer
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Doubtful/Loss | Other | Consumer
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	$ 0	$ 0

Allowance for Credit Losses -_5

Allowance for Credit Losses - Analysis of Past Due and Nonaccrual Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Loans	$ 6,794,470	$ 6,450,447
Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	4,394,802	4,359,083
Consumer
Financing Receivable, Past Due [Line Items]
Loans	1,313,268	1,240,743
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans	586,455	569,921
Construction
Financing Receivable, Past Due [Line Items]
Loans	347,198	211,560
Agriculture production
Financing Receivable, Past Due [Line Items]
Loans	144,497	61,414
Leases
Financing Receivable, Past Due [Line Items]
Loans	8,250	7,726
CRE non-owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	2,217,806	2,149,725
CRE owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	956,440	984,807
Multifamily | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	949,502	944,537
Farmland | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	271,054	280,014
SFR 1-4 1st DT liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	883,438	790,349
SFR HELOCs and junior liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	356,813	393,666
Other | Consumer
Financing Receivable, Past Due [Line Items]
Loans	73,017	56,728
Financial asset originated
Financing Receivable, Past Due [Line Items]
Loans	6,794,470	6,450,447
Financial asset originated | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	4,394,802	4,359,083
Financial asset originated | Consumer
Financing Receivable, Past Due [Line Items]
Loans	1,313,268	1,240,743
Financial asset originated | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans	586,455	569,921
Financial asset originated | Construction
Financing Receivable, Past Due [Line Items]
Loans	347,198	211,560
Financial asset originated | Agriculture production
Financing Receivable, Past Due [Line Items]
Loans	144,497	61,414
Financial asset originated | Leases
Financing Receivable, Past Due [Line Items]
Loans	8,250	7,726
Financial asset originated | CRE non-owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	2,217,806	2,149,725
Financial asset originated | CRE owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	956,440	984,807
Financial asset originated | Multifamily | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	949,502	944,537
Financial asset originated | Farmland | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	271,054	280,014
Financial asset originated | SFR 1-4 1st DT liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	883,438	790,349
Financial asset originated | SFR HELOCs and junior liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	356,813	393,666
Financial asset originated | Other | Consumer
Financing Receivable, Past Due [Line Items]
Loans	73,017	56,728
Total Past Due Loans | Financial asset originated
Financing Receivable, Past Due [Line Items]
Loans	19,415	4,947
Total Past Due Loans | Financial asset originated | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	12,024	332
Total Past Due Loans | Financial asset originated | Consumer
Financing Receivable, Past Due [Line Items]
Loans	2,937	1,463
Total Past Due Loans | Financial asset originated | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans	2,503	2,773
Total Past Due Loans | Financial asset originated | Construction
Financing Receivable, Past Due [Line Items]
Loans	0	379
Total Past Due Loans | Financial asset originated | Agriculture production
Financing Receivable, Past Due [Line Items]
Loans	1,504	0
Total Past Due Loans | Financial asset originated | Leases
Financing Receivable, Past Due [Line Items]
Loans	447	0
Total Past Due Loans | Financial asset originated | CRE non-owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	5,258	0
Total Past Due Loans | Financial asset originated | CRE owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	281	173
Total Past Due Loans | Financial asset originated | Multifamily | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	0	159
Total Past Due Loans | Financial asset originated | Farmland | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	6,485	0
Total Past Due Loans | Financial asset originated | SFR 1-4 1st DT liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	2,080	303
Total Past Due Loans | Financial asset originated | SFR HELOCs and junior liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	639	1,045
Total Past Due Loans | Financial asset originated | Other | Consumer
Financing Receivable, Past Due [Line Items]
Loans	218	115
30-59 days | Financial asset originated
Financing Receivable, Past Due [Line Items]
Loans	6,134	2,681
30-59 days | Financial asset originated | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	4,545	159
30-59 days | Financial asset originated | Consumer
Financing Receivable, Past Due [Line Items]
Loans	305	222
30-59 days | Financial asset originated | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans	244	2,300
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	593	0
30-59 days | Financial asset originated | Leases
Financing Receivable, Past Due [Line Items]
Loans	447	0
30-59 days | Financial asset originated | CRE non-owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	3,876	0
30-59 days | Financial asset originated | CRE owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	34	0
30-59 days | Financial asset originated | Multifamily | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	0	159
30-59 days | Financial asset originated | Farmland | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	635	0
30-59 days | Financial asset originated | SFR 1-4 1st DT liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	141	24
30-59 days | Financial asset originated | SFR HELOCs and junior liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	16	172
30-59 days | Financial asset originated | Other | Consumer
Financing Receivable, Past Due [Line Items]
Loans	148	26
60-89 days | Financial asset originated
Financing Receivable, Past Due [Line Items]
Loans	6,770	488
60-89 days | Financial asset originated | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	3,798	98
60-89 days | Financial asset originated | Consumer
Financing Receivable, Past Due [Line Items]
Loans	1,489	200
60-89 days | Financial asset originated | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans	605	190
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	878	0
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	0	98
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	3,798	0
60-89 days | Financial asset originated | SFR 1-4 1st DT liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	1,449	0
60-89 days | Financial asset originated | SFR HELOCs and junior liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	0	166
60-89 days | Financial asset originated | Other | Consumer
Financing Receivable, Past Due [Line Items]
Loans	40	34
> 90 days | Financial asset originated
Financing Receivable, Past Due [Line Items]
Loans	6,511	1,778
> 90 days | Financial asset originated | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	3,681	75
> 90 days | Financial asset originated | Consumer
Financing Receivable, Past Due [Line Items]
Loans	1,143	1,041
> 90 days | Financial asset originated | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans	1,654	283
> 90 days | Financial asset originated | Construction
Financing Receivable, Past Due [Line Items]
Loans	0	379
> 90 days | Financial asset originated | Agriculture production
Financing Receivable, Past Due [Line Items]
Loans	33	0
> 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	1,382	0
> 90 days | Financial asset originated | CRE owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	247	75
> 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	2,052	0
> 90 days | Financial asset originated | SFR 1-4 1st DT liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	490	279
> 90 days | Financial asset originated | SFR HELOCs and junior liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	623	707
> 90 days | Financial asset originated | Other | Consumer
Financing Receivable, Past Due [Line Items]
Loans	30	55
Current | Financial asset originated
Financing Receivable, Past Due [Line Items]
Loans	6,775,055	6,445,500
Current | Financial asset originated | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	4,382,778	4,358,751
Current | Financial asset originated | Consumer
Financing Receivable, Past Due [Line Items]
Loans	1,310,331	1,239,280
Current | Financial asset originated | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans	583,952	567,148
Current | Financial asset originated | Construction
Financing Receivable, Past Due [Line Items]
Loans	347,198	211,181
Current | Financial asset originated | Agriculture production
Financing Receivable, Past Due [Line Items]
Loans	142,993	61,414
Current | Financial asset originated | Leases
Financing Receivable, Past Due [Line Items]
Loans	7,803	7,726
Current | Financial asset originated | CRE non-owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	2,212,548	2,149,725
Current | Financial asset originated | CRE owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	956,159	984,634
Current | Financial asset originated | Multifamily | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	949,502	944,378
Current | Financial asset originated | Farmland | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	264,569	280,014
Current | Financial asset originated | SFR 1-4 1st DT liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	881,358	790,046
Current | Financial asset originated | SFR HELOCs and junior liens | Consumer
Financing Receivable, Past Due [Line Items]
Loans	356,174	392,621
Current | Financial asset originated | Other | Consumer
Financing Receivable, Past Due [Line Items]
Loans	$ 72,799	$ 56,613

Allowance for Credit Losses -_6

Allowance for Credit Losses - Schedule of Non Accrual Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	$ 18,822	$ 18,125
Non accrual, no allowance including guaranteed loans	19,588	18,230
Non accrual including guaranteed loans	31,881	21,321
Total non accrual	31,003	21,096
Past due 90 days or more and still accruing	10	0
Loans Insured or Guaranteed by US Government Authorities
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	766	105
Total non accrual	878	225
Commercial real estate
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	12,014	8,574
Total non accrual	20,502	8,574
Past due 90 days or more and still accruing	0	0
Consumer
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	6,128	6,662
Total non accrual	6,487	7,459
Past due 90 days or more and still accruing	0	0
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	1,379	1,224
Total non accrual	2,503	3,518
Past due 90 days or more and still accruing	10	0
Construction
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	67	491
Total non accrual	67	491
Past due 90 days or more and still accruing	0	0
Agriculture production
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	0	1,279
Total non accrual	2,322	1,279
Past due 90 days or more and still accruing	0	0
Leases
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	0	0
Total non accrual	0	0
Past due 90 days or more and still accruing	0	0
CRE non-owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	2,024	1,739
Total non accrual	2,024	1,739
Past due 90 days or more and still accruing	0	0
CRE owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	3,994	4,938
Total non accrual	3,994	4,938
Past due 90 days or more and still accruing	0	0
Multifamily | Commercial real estate
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	0	125
Total non accrual	0	125
Past due 90 days or more and still accruing	0	0
Farmland | Commercial real estate
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	5,996	1,772
Total non accrual	14,484	1,772
Past due 90 days or more and still accruing	0	0
SFR 1-4 1st DT liens | Consumer
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	2,808	4,117
Total non accrual	2,811	4,220
Past due 90 days or more and still accruing	0	0
SFR HELOCs and junior liens | Consumer
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	3,281	2,498
Total non accrual	3,571	3,155
Past due 90 days or more and still accruing	0	0
Other | Consumer
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	39	47
Total non accrual	105	84
Past due 90 days or more and still accruing	$ 0	$ 0

Allowance for Credit Losses -_7

Allowance for Credit Losses - Amortized Cost Basis of Collateral Dependent Loans, By Class of Loan (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 6,794,470	$ 6,450,447
Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	738	1,325
Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	615	173
Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	816	1,103
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	6,772	6,334
Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	125
Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	13,849	1,772
SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	4,691	5,996
SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,467	1,121
Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	95	61
A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,712	1,596
Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	824	1,329
Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	31,579	20,935
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	4,394,802	4,359,083
Commercial real estate | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	738	1,325
Commercial real estate | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	615	173
Commercial real estate | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	816	1,103
Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	4,484	4,076
Commercial real estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	125
Commercial real estate | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	13,849	1,772
Commercial real estate | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial real estate | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial real estate | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial real estate | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial real estate | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		0
Commercial real estate | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	20,502	8,574
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,313,268	1,240,743
Consumer | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Consumer | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Consumer | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	5
Consumer | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Consumer | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Consumer | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	4,624	5,884
Consumer | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,467	1,121
Consumer | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	95	61
Consumer | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Consumer | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	2
Consumer | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	6,186	7,073
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	586,455	569,921
Commercial and industrial | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial and industrial | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial and industrial | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial and industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	1,874
Commercial and industrial | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial and industrial | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial and industrial | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial and industrial | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial and industrial | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial and industrial | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,712	1,596
Commercial and industrial | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	791	48
Commercial and industrial | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,503	3,518
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	347,198	211,560
Construction | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Construction | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Construction | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Construction | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	379
Construction | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Construction | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Construction | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	67	112
Construction | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Construction | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Construction | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Construction | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Construction | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	67	491
Agriculture production
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	144,497	61,414
Agriculture production | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Agriculture production | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Agriculture production | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Agriculture production | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,288	0
Agriculture production | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Agriculture production | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Agriculture production | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Agriculture production | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Agriculture production | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Agriculture production | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Agriculture production | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	33	1,279
Agriculture production | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,321	1,279
Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	8,250	7,726
Leases | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Leases | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Leases | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Leases | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Leases | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Leases | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Leases | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Leases | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Leases | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Leases | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0
Leases | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0
Leases | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE non-owner occupied | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,217,806	2,149,725
CRE non-owner occupied | Commercial real estate | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	124	777
CRE non-owner occupied | Commercial real estate | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	615	98
CRE non-owner occupied | Commercial real estate | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	519	0
CRE non-owner occupied | Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	766	864
CRE non-owner occupied | Commercial real estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE non-owner occupied | Commercial real estate | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE non-owner occupied | Commercial real estate | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE non-owner occupied | Commercial real estate | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE non-owner occupied | Commercial real estate | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE non-owner occupied | Commercial real estate | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE non-owner occupied | Commercial real estate | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE non-owner occupied | Commercial real estate | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,024	1,739
CRE owner occupied | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	956,440	984,807
CRE owner occupied | Commercial real estate | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	614	548
CRE owner occupied | Commercial real estate | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	75
CRE owner occupied | Commercial real estate | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	297	1,103
CRE owner occupied | Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,083	3,212
CRE owner occupied | Commercial real estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE owner occupied | Commercial real estate | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE owner occupied | Commercial real estate | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE owner occupied | Commercial real estate | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE owner occupied | Commercial real estate | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE owner occupied | Commercial real estate | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE owner occupied | Commercial real estate | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE owner occupied | Commercial real estate | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,994	4,938
Multifamily | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	949,502	944,537
Multifamily | Commercial real estate | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Multifamily | Commercial real estate | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Multifamily | Commercial real estate | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Multifamily | Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Multifamily | Commercial real estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	125
Multifamily | Commercial real estate | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Multifamily | Commercial real estate | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Multifamily | Commercial real estate | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Multifamily | Commercial real estate | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Multifamily | Commercial real estate | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Multifamily | Commercial real estate | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Multifamily | Commercial real estate | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	125
Farmland | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	271,054	280,014
Farmland | Commercial real estate | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Farmland | Commercial real estate | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Farmland | Commercial real estate | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Farmland | Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	635	0
Farmland | Commercial real estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Farmland | Commercial real estate | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	13,849	1,772
Farmland | Commercial real estate | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Farmland | Commercial real estate | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Farmland | Commercial real estate | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Farmland | Commercial real estate | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Farmland | Commercial real estate | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Farmland | Commercial real estate | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	14,484	1,772
SFR 1-4 1st DT liens | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	883,438	790,349
SFR 1-4 1st DT liens | Consumer | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR 1-4 1st DT liens | Consumer | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR 1-4 1st DT liens | Consumer | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR 1-4 1st DT liens | Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR 1-4 1st DT liens | Consumer | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR 1-4 1st DT liens | Consumer | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR 1-4 1st DT liens | Consumer | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,808	4,220
SFR 1-4 1st DT liens | Consumer | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR 1-4 1st DT liens | Consumer | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR 1-4 1st DT liens | Consumer | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR 1-4 1st DT liens | Consumer | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR 1-4 1st DT liens | Consumer | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,808	4,220
SFR HELOCs and junior liens | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	356,813	393,666
SFR HELOCs and junior liens | Consumer | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR HELOCs and junior liens | Consumer | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR HELOCs and junior liens | Consumer | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR HELOCs and junior liens | Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR HELOCs and junior liens | Consumer | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR HELOCs and junior liens | Consumer | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR HELOCs and junior liens | Consumer | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,816	1,664
SFR HELOCs and junior liens | Consumer | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,467	1,121
SFR HELOCs and junior liens | Consumer | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR HELOCs and junior liens | Consumer | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR HELOCs and junior liens | Consumer | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR HELOCs and junior liens | Consumer | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,283	2,785
Other | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	73,017	56,728
Other | Consumer | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Other | Consumer | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Other | Consumer | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Other | Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	5
Other | Consumer | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Other | Consumer | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Other | Consumer | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Other | Consumer | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Other | Consumer | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	95	61
Other | Consumer | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Other | Consumer | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	2
Other | Consumer | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 95	$ 68

Allowance for Credit Losses -_8

Allowance for Credit Losses - Amortized Cost Basis of Loans Experiencing Financial Difficulty and Modified (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal Forgiveness	$ 0
Payment Delay/Term Extension	152
Combination - Term Change / Available Credit Reduction	60
Combination - Payment Delay/Term Reduction	$ 1,430
Total % of Loans Outstanding (Percentage)	0.61%
Reduction of available credit	$ 11
Commercial real estate | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal Forgiveness	0
Payment Delay/Term Extension	0
Combination - Term Change / Available Credit Reduction	0
Combination - Payment Delay/Term Reduction	$ 1,430
Total % of Loans Outstanding (Percentage)	0.53%
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal Forgiveness	$ 0
Payment Delay/Term Extension	152
Combination - Term Change / Available Credit Reduction	60
Combination - Payment Delay/Term Reduction	$ 0
Total % of Loans Outstanding (Percentage)	0.08%

Real Estate Owned - Summary of

Real Estate Owned - Summary of Activity in Balance of Foreclosed Assets (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) asset	Dec. 31, 2022 USD ($) asset
Repossessed Assets [Abstract]
Beginning balance, net	$ 3,439	$ 2,594
Additions/transfers from loans	155	1,349
Dispositions/sales	(206)	(707)
Valuation adjustments	(683)	203
Ending balance, net	2,705	3,439
Ending valuation allowance	$ (739)	$ (113)
Ending number of foreclosed assets (in assets) | asset	9	9
Proceeds from sale of real estate owned	$ 224	$ 873
Gain on sale of real estate owned	$ 19	$ 166

Real Estate Owned - Additional

Real Estate Owned - Additional Information (Detail)	Dec. 31, 2023 USD ($) property
Schedule Of Foreclosed Assets Activity [Line Items]
Formal foreclosure proceedings | $	$ 0
Land
Schedule Of Foreclosed Assets Activity [Line Items]
Number of properties	1
Residential Real Estate
Schedule Of Foreclosed Assets Activity [Line Items]
Number of foreclosed properties	8

Premises and Equipment - Summar

Premises and Equipment - Summary of Premises and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Less: Accumulated depreciation	$ (65,154)	$ (61,657)
Premises and equipment, net	71,347	72,327
Depreciable premises and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	135,483	132,767
Premises and equipment, net	70,329	71,110
Land and land improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	26,032	25,899
Buildings
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	65,467	64,018
Furniture and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	43,984	42,850
Construction in progress
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 1,018	$ 1,217

Premises and Equipment - Additi

Premises and Equipment - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Depreciation expense for premises and equipment	$ 5.8	$ 5.7	$ 5.9

Cash Value of Life Insurance -

Cash Value of Life Insurance - Summary of Activity in Balance of Cash Value of Life Insurance (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) company policy employee	Dec. 31, 2022 USD ($) company policy employee	Dec. 31, 2021 USD ($)
Insurance [Roll Forward]
Beginning balance	$ 133,742	$ 117,857
Increase in cash value of life insurance	3,150	2,858	$ 2,775
Gain on death benefit	0	309	702
Insurance proceeds receivable reclassified to other assets	0	(891)
Ending balance	136,892	133,742	$ 117,857
End of period death benefit	$ 224,021	$ 223,427
Number of policies owned (in policies) | policy	216	216
Insurance companies used (in companies) | company	14	14
Current and former employees and directors covered (in employees) | employee	79	79
FNBB
Insurance [Roll Forward]
Acquired policies from business combination	$ 0	$ 13,609

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Summary of Goodwill Intangible (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 304,442
Additions	0
Reductions	0
Ending balance	$ 304,442

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Mar. 25, 2022	Mar. 18, 2016
Finite-Lived Intangible Assets [Line Items]
Impairment charges	$ 0	$ 0	$ 0	$ 0
Valley Republic Bancorp
Finite-Lived Intangible Assets [Line Items]
Additions to core deposit intangibles					$ 10,600,000
FNBB
Finite-Lived Intangible Assets [Line Items]
Additions to core deposit intangibles						$ 2,000,000

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Summary of Core Deposit Intangibles (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Core Deposit Intangibles [Roll Forward]
Core deposit intangibles, beginning balance	$ 38,826
Fully amortized portion	(2,046)	$ (8,074)
Acquisition of VRB	0	10,635
Core deposit intangibles, ending balance	36,780	38,826
Accumulated Amortization, Core Deposit Intangibles [Roll Forward]
Accumulated amortization, gross	(22,156)	(23,896)
Fully amortized portion	2,046	8,074
Amortization expense	(6,118)	(6,334)
Accumulated amortization, gross ending balance	(26,228)	(22,156)
Core deposit intangibles
Core Deposit Intangibles [Roll Forward]
Core deposit intangibles, beginning balance	38,826	36,265
Core deposit intangibles, ending balance		38,826
Accumulated Amortization, Core Deposit Intangibles [Roll Forward]
Core deposit intangibles, net, ending balance	$ 10,552	$ 16,670

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets - Remaining Estimated Core Deposit Intangible Amortization (Detail) - Core deposit intangibles - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
2024	$ 4,120
2025	1,961
2026	1,527
2027	1,008
2028	797
Thereafter	1,139
Total	$ 10,552	$ 16,670

Mortgage Servicing Rights - Fai

Mortgage Servicing Rights - Fair Value of Mortgage Servicing Rights (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) yr	Dec. 31, 2022 USD ($) yr	Dec. 31, 2021 USD ($) yr
Servicing Asset at Fair Value, Amount [Roll Forward]
Contractually specified servicing fees, late fees and ancillary fees earned	$ 1,808	$ 1,887	$ 1,881
Mortgage servicing rights
Servicing Asset at Fair Value, Amount [Roll Forward]
Balance at beginning of period	6,712	5,874	5,092
Additions	400	537	1,654
Change in fair value	(506)	301	(872)
Balance at end of period	$ 6,606	$ 6,712	$ 5,874
Constant prepayment rate
Servicing Asset at Fair Value, Amount [Roll Forward]
Fair value of mortgage servicing rights, weighted average	1.160	1.270	2.080
Expected life (years)
Servicing Asset at Fair Value, Amount [Roll Forward]
Fair value of mortgage servicing rights, weighted average | yr	7.8	7.6	5.7
Discount rate
Servicing Asset at Fair Value, Amount [Roll Forward]
Fair value of mortgage servicing rights, weighted average	0.120	0.120	0.120
Loans
Servicing Asset at Fair Value, Amount [Roll Forward]
Balance at beginning of period	$ 739,919	$ 770,299	$ 779,530
Balance at end of period	$ 714,801	$ 739,919	$ 770,299

Leases - Components of Lease Ex

Leases - Components of Lease Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating lease cost	$ 5,997	$ 5,725
Short-term lease cost	329	283
Variable lease cost	38	26
Sublease income	0	0
Total lease cost	$ 6,364	$ 6,034

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Operating cash flows for operating leases	$ 6,378	$ 5,904	$ 4,964
ROUA obtained in exchange for operating lease liabilities	$ 4,300	$ 6,149

Leases - Lease Term and Discoun

Leases - Lease Term and Discount Rate (Detail)	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Weighted-average remaining lease term	7 years 10 months 24 days	8 years 3 months 18 days
Weighted-average discount rate	3.30%	3%

Leases - Future Expected Operat

Leases - Future Expected Operating Lease Payments (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
2024	$ 5,755
2025	5,186
2026	4,642
2027	3,951
2028	2,891
Thereafter	10,104
Total	32,529
Discount for present value of expected cash flows	(4,268)
Lease liability at December 31, 2023	$ 28,261	$ 29,004

Deposits - Summary of Balances

Deposits - Summary of Balances of Deposits (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Deposits [Abstract]
Noninterest-bearing demand	$ 2,722,689	$ 3,502,095
Interest-bearing demand	1,731,814	1,718,541
Savings	2,682,068	2,884,378
Time certificates, $250,000 and over	250,180	46,350
Other time certificates	447,287	177,649
Total deposits	$ 7,834,038	$ 8,329,013

Deposits - Additional Informati

Deposits - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Deposits [Abstract]
Overdrawn deposit balances classified as consumer loans	$ 1.8	$ 1.8

Deposits - Schedule of Maturiti

Deposits - Schedule of Maturities of Time Deposits (Detail) $ in Thousands	Dec. 31, 2023 USD ($)
Summary of maturities of time deposits [Abstract]
2024	$ 626,979
2025	59,053
2026	8,453
2027	1,868
2028	1,114
Thereafter	0
Total	$ 697,467

Other Borrowings - Summary of B

Other Borrowings - Summary of Balances of Other Borrowings (Detail) - USD ($)	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Total other borrowings	$ 632,582,000	$ 264,605,000
5.70% Fixed Rated Collateralized Borrowings
Debt Instrument [Line Items]
Other secured financings	$ 400,000,000	0
Collateralized borrowing, fixed rate	5.70%
4.75%Fixed Rated Collateralized Borrowings
Debt Instrument [Line Items]
Other secured financings	$ 200,000,000	0
Collateralized borrowing, fixed rate	4.75%
4.65% Fixed Rate Collateralized Borrowings
Debt Instrument [Line Items]
Other secured financings	$ 0	216,700,000
Collateralized borrowing, fixed rate	4.65%
0.05% Fixed Rate Collateralized Borrowings
Debt Instrument [Line Items]
Other secured financings	$ 32,582,000	$ 47,905,000
Collateralized borrowing, fixed rate	0.05%		0.05%

Other Borrowings - Additional I

Other Borrowings - Additional Information (Detail)	Dec. 31, 2023 USD ($)
Debt Disclosure [Abstract]
Repurchase investment securities sold and pledged as collateral under securities repurchase agreement	$ 32,600,000
FHLB collateral line of credit, maximum borrowings capacity	2,500,000,000
FHLB, amount outstanding	600,000,000
Loans designated as potential collateral under collateralized line of credit with FHLB	69,200,000
Investment securities designated as potential collateral under collateral line of credit	4,600,000,000
Collateralized line of credit with San Francisco Federal Reserve Bank, maximum borrowings capacity	350,000,000
Collateralized line of credit with San Francisco Federal Reserve Bank, outstanding balance	0
Loans designated as potential collateral under collateral line of credit with San Francisco Federal Reserve Bank	444,500,000
Unused correspondent banking lines of credit from commercial banks for federal funds	$ 30,000,000

Junior Subordinated Debt - Addi

Junior Subordinated Debt - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) location trust	Dec. 31, 2022 USD ($)	Mar. 25, 2022 USD ($)
Class of Stock [Line Items]
Number of subsidiary business trusts (in trusts) | trust	5
Preferred stock, value issued	$ 0	$ 0
Interest deferral period	5 years
Number of locations organized (in locations) | location	2
Senior Subordinated Notes
Class of Stock [Line Items]
Face Value	$ 98,889		$ 36,000
VRB Subordinated - 6% | Senior Subordinated Notes
Class of Stock [Line Items]
Face Value	$ 16,000		16,000
Current Coupon Rate	6%
Interest rate	6%
VRB Subordinated - 6% | Senior Subordinated Loans
Class of Stock [Line Items]
Current Coupon Rate	6%
Interest rate	5%
VRB Subordinated - 6% | Senior Subordinated Loans | SOFR
Class of Stock [Line Items]
Basis spread on variable rate	3.52%	4.90%
VRB Subordinated - 5% | Senior Subordinated Notes
Class of Stock [Line Items]
Face Value	$ 20,000		$ 20,000
Current Coupon Rate	5%
Interest rate	5%
Wholly owned subsidiaries
Class of Stock [Line Items]
Preferred stock, value issued	$ 63,000
North Valley Bancorp
Class of Stock [Line Items]
Number of subsidiary business trusts (in trusts) | trust	3
Number of locations acquired (in locations) | location	3

Junior Subordinated Debt - Summ

Junior Subordinated Debt - Summary of Terms and Recorded Balance of Subordinated Debenture (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Mar. 25, 2022
Subordinated Borrowing [Line Items]
Recorded Book Value	$ 101,099	$ 101,040
Senior Subordinated Notes
Subordinated Borrowing [Line Items]
Face Value	98,889		$ 36,000
TriCo Cap Trust I
Subordinated Borrowing [Line Items]
Recorded Book Value	20,619	20,619
TriCo Cap Trust I | Senior Subordinated Notes
Subordinated Borrowing [Line Items]
Face Value	$ 20,619
Current Coupon Rate	8.71%
TriCo Cap Trust II
Subordinated Borrowing [Line Items]
Recorded Book Value	$ 20,619	20,619
TriCo Cap Trust II | Senior Subordinated Notes
Subordinated Borrowing [Line Items]
Face Value	$ 20,619
Current Coupon Rate	8.22%
North Valley Trust II
Subordinated Borrowing [Line Items]
Recorded Book Value	$ 5,602	5,503
North Valley Trust II | Senior Subordinated Notes
Subordinated Borrowing [Line Items]
Face Value	$ 6,186
Current Coupon Rate	8.89%
North Valley Trust III
Subordinated Borrowing [Line Items]
Recorded Book Value	$ 4,472	4,383
North Valley Trust III | Senior Subordinated Notes
Subordinated Borrowing [Line Items]
Face Value	$ 5,155
Current Coupon Rate	8.47%
North Valley Trust IV
Subordinated Borrowing [Line Items]
Recorded Book Value	$ 7,615	7,393
North Valley Trust IV | Senior Subordinated Notes
Subordinated Borrowing [Line Items]
Face Value	$ 10,310
Current Coupon Rate	6.98%
VRB Subordinated - 6%
Subordinated Borrowing [Line Items]
Recorded Book Value	$ 17,000	17,187
VRB Subordinated - 6% | Senior Subordinated Notes
Subordinated Borrowing [Line Items]
Interest rate	6%
Face Value	$ 16,000		16,000
Current Coupon Rate	6%
VRB Subordinated - 5%
Subordinated Borrowing [Line Items]
Recorded Book Value	$ 25,172	$ 25,336
VRB Subordinated - 5% | Senior Subordinated Notes
Subordinated Borrowing [Line Items]
Interest rate	5%
Face Value	$ 20,000		$ 20,000
Current Coupon Rate	5%
LIBOR | TriCo Cap Trust I | Senior Subordinated Notes
Subordinated Borrowing [Line Items]
Coupon Rate (Variable) 3 mo. SOFR +	3.05%
LIBOR | TriCo Cap Trust II | Senior Subordinated Notes
Subordinated Borrowing [Line Items]
Coupon Rate (Variable) 3 mo. SOFR +	2.55%
LIBOR | North Valley Trust II | Senior Subordinated Notes
Subordinated Borrowing [Line Items]
Coupon Rate (Variable) 3 mo. SOFR +	3.25%
LIBOR | North Valley Trust III | Senior Subordinated Notes
Subordinated Borrowing [Line Items]
Coupon Rate (Variable) 3 mo. SOFR +	2.80%
LIBOR | North Valley Trust IV | Senior Subordinated Notes
Subordinated Borrowing [Line Items]
Coupon Rate (Variable) 3 mo. SOFR +	1.33%

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2022 shares
Conversion of Stock [Line Items]
Letters of credit, issue period	one year
Common stock, shares outstanding (in shares)	33,268,102	33,331,513
Conversion ratio	1.5875
Common Class B | Visa Inc
Conversion of Stock [Line Items]
Common stock, shares outstanding (in shares)	13,396
Common Class A
Conversion of Stock [Line Items]
Value of the Class A shares | $ / shares	$ 260.35
Value of unredeemed Class A equivalent shares | $	$ 5,537

Commitments and Contingencies_2

Commitments and Contingencies - Summary of Bank's Commitments and Contingent Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit
Real estate construction loans
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	331,178	312,371
Real estate mortgage loans
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	453,647	458,896
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	38,449	26,599
Commercial loans
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	788,742	656,705
Consumer loans
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	652,110	760,588
Deposit account overdraft privilege
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	$ 121,539	$ 126,634

Shareholders' Equity - Addition

Shareholders' Equity - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Feb. 25, 2021
Class of Stock [Line Items]
Cash dividends received	$ 52,800	$ 64,200	$ 31,600
Market value of shares repurchased under equity compensation plans	$ 2,266	$ 2,522	$ 2,118
Stock options
Class of Stock [Line Items]
Company's common stock in lieu of cash to exercise options to purchase shares (in shares)	2,506	39,447	28,276
Other share-based awards
Class of Stock [Line Items]
Company's common stock in lieu of cash to exercise options to purchase shares (in shares)	56,714	27,840	19,413
Maximum
Class of Stock [Line Items]
Amount available to dividend to holding company	$ 223,400
2021 Stock Repurchase Plan
Class of Stock [Line Items]
Repurchase of common stock (in shares)				2,000,000
Stock repurchase plan percentage of common stock				6.70%
Stock repurchase plan, number of shares repurchased (in shares)	150,000	576,881	63,317
Remaining number of shares available to repurchased (in shares)	1,209,802
Common Stock
Class of Stock [Line Items]
Stock repurchase plan, number of shares repurchased (in shares)	209,241	644,168	111,229
Market value of shares repurchased under equity compensation plans	$ 2,300	$ 1,300	$ 2,100

Stock Options and Other Equit_3

Stock Options and Other Equity-Based Incentive Instruments - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) shares	Dec. 31, 2022 shares	Dec. 31, 2021 shares	Apr. 30, 2019 shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding options under the plan (in shares)	7,500	15,500	78,825
Options granted (in shares)	0	0
Restricted Stock Units (RSUs) | Market Plus Service Condition Vesting RSUs
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of units outstanding expected to vest (in shares)	123,102	114,481
Pre-tax compensation costs | $	$ 2.3
Number of units released (in shares)	55,928
Restricted Stock Units (RSUs) | Service Condition Vesting RSUs
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of units outstanding expected to vest (in shares)	144,487	139,194
Pre-tax compensation costs | $	$ 4
Number of units released (in shares)	81,902
Minimum | Restricted Stock Units (RSUs) | Market Plus Service Condition Vesting RSUs
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of units released (in shares)	0
Maximum | Restricted Stock Units (RSUs) | Market Plus Service Condition Vesting RSUs
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of units released (in shares)	184,653
2009 Plan
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding options under the plan (in shares)	7,500
2019 Plan
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Aggregate number of shares of TriCo's common stock issued				1,500,000
Percentage of shares acquired	0.50
Common stock issued pursuant to stock option (in shares)	1
Common stock issued pursuant to performance award (in shares)	2
Outstanding options under the plan (in shares)	0
Options granted (in shares)	0	0	0
2019 Plan | Restricted Stock Units (RSUs)
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
RSUs outstanding (in shares)	144,487
2019 Plan | Minimum
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Award vesting period	1 year
2019 Plan | Maximum
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options available for grant under the plan (in shares)	517,773

Stock Options and Other Equit_4

Stock Options and Other Equity-Based Incentive Instruments - Stock Option Activity (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Number of Shares
Options outstanding, beginning balance (in shares)	15,500	78,825
Options granted (in shares)	0	0
Options exercised (in shares)	(8,000)	(63,325)
Options forfeited (in shares)	0	0
Options outstanding, ending balance (in shares)	7,500	15,500
Option Price per Share
Options granted, option price per share (in USD per share)	$ 0	$ 0
Options exercised, option price per share (in USD per share)	19.46
Options forfeited, option price per share (in USD per share)	0	0
Options outstanding, option price per share, ending balance (in USD per share)	23.21
Weighted Average Exercise Price
Options outstanding, weighted average exercise price, beginning balance (in USD per share)	21.27	19.28
Options granted, weighted average exercise price (in USD per share)	0	0
Options exercised, weighted average exercise price (in USD per share)	19.46	18.79
Options forfeited, weighted average exercise price (in USD per share)	0	0
Options outstanding, weighted average exercise price, ending balance (in USD per share)	23.21	21.27
Minimum
Option Price per Share
Options outstanding, option price per share, beginning balance (in USD per share)	19.46	15.34
Options exercised, option price per share (in USD per share)		15.34
Options outstanding, option price per share, ending balance (in USD per share)		19.46
Maximum
Option Price per Share
Options outstanding, option price per share, beginning balance (in USD per share)	$ 23.21	23.21
Options exercised, option price per share (in USD per share)		19.46
Options outstanding, option price per share, ending balance (in USD per share)		$ 23.21

Stock Options and Other Equit_5

Stock Options and Other Equity-Based Incentive Instruments - Summary of Options Outstanding (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options (in shares)	7,500	15,500	78,825
Weighted average exercise price (in USD per share)	$ 23.21	$ 21.27	$ 19.28
Intrinsic value	$ 148
Weighted average remaining contractual term (yrs.)	9 months 18 days
Currently Exercisable
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options (in shares)	7,500
Weighted average exercise price (in USD per share)	$ 23.21
Intrinsic value	$ 148
Weighted average remaining contractual term (yrs.)	9 months 18 days
Currently Not Exercisable
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options (in shares)	0
Weighted average exercise price (in USD per share)	$ 0
Intrinsic value	$ 0
Weighted average remaining contractual term (yrs.)	0 years

Stock Options and Other Equit_6

Stock Options and Other Equity-Based Incentive Instruments - Information about Options (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-Based Payment Arrangement [Abstract]
Intrinsic value of options exercised	$ 134	$ 1,190	$ 1,476
Fair value of options that vested	0	0	0
Total compensation costs for options recognized in expense	0	0	0
Total tax benefit recognized in income related to compensation costs for options	40	0	0
Excess tax benefit recognized in income	$ 0	$ 0	$ 0

Stock Options and Other Equit_7

Stock Options and Other Equity-Based Incentive Instruments - Restricted Stock Unit (RSU) Activity (Detail) - Restricted Stock Units (RSUs)	12 Months Ended
	Dec. 31, 2023 $ / shares shares
Service Condition Vesting RSUs
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding, beginning balance (in shares)	139,194
RSUs granted (in shares)	84,066
Additional market plus service condition RSUs vested (in shares)	0
RSUs added through dividend credits (in shares)	4,706
RSUs released through vesting (in shares)	(81,902)
RSUs forfeited/expired (in shares)	(1,577)
Outstanding, ending balance (in shares)	144,487
RSUs granted, weighted average fair value on date of grant (in USD per share) | $ / shares	$ 34.52
Market Plus Service Condition Vesting RSUs
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding, beginning balance (in shares)	114,481
RSUs granted (in shares)	55,908
Additional market plus service condition RSUs vested (in shares)	10,301
RSUs added through dividend credits (in shares)	0
RSUs released through vesting (in shares)	(55,928)
RSUs forfeited/expired (in shares)	(1,660)
Outstanding, ending balance (in shares)	123,102
RSUs granted, weighted average fair value on date of grant (in USD per share) | $ / shares	$ 27.72

Stock Options and Other Equit_8

Stock Options and Other Equity-Based Incentive Instruments - Weighted Average Fair Value and Assumptions (Details) - Performance Shares - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance share fair value (in dollars per share)	$ 27.73	$ 40.89
Risk-free interest rate	4.16%	4.10%
Expected volatility	33.86%	39.01%
Expected life (years)	3 years	3 years
Expected dividend yield	3.22%	2.32%

Stock Options and Other Equit_9

Stock Options and Other Equity-Based Incentive Instruments - Summary of Compensation Costs and Excess Tax Benefits for RSUs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Service Condition Vesting RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation costs for RSUs recognized in income	$ 2,807	$ 2,883	$ 1,728
Excess tax benefit recognized in income Service condition vesting RSUs	924	1,079	626
Market Plus Service Condition Vesting RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation costs for RSUs recognized in income	1,319	986	910
Excess tax benefit recognized in income Service condition vesting RSUs	$ 594	$ 355	$ 226

Non-interest Income and Expen_3

Non-interest Income and Expense - Components of Other Noninterest Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	$ 50,088	$ 49,765	$ 43,948
Asset management and commission income	4,517	3,986	3,668
Increase in cash value of life insurance	3,150	2,858	2,775
Gain on sale of loans	1,166	2,342	9,580
Lease brokerage income	441	820	746
Sale of customer checks	1,383	1,167	459
Loss on sale of investment securities	(284)	0	0
Gain (loss) on marketable equity securities	36	(340)	(86)
Other	903	2,448	2,574
Total other noninterest income	11,312	13,281	19,716
Total noninterest income	61,400	63,046	63,664
ATM and interchange fees
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	26,459	26,767	25,356
Service charges on deposit accounts
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	17,595	16,536	14,013
Other service fees
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	4,732	4,274	3,570
Mortgage banking service fees
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	1,808	1,887	1,881
Change in value of mortgage loan servicing rights
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	$ (506)	$ 301	$ (872)

Non-interest Income and Expen_4

Non-interest Income and Expense - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Other Income and Expenses [Abstract]
Mortgage loan servicing fees, net of change in fair value of mortgage loan servicing rights	$ 1.3	$ 2.2	$ 1

Non-interest Income and Expen_5

Non-interest Income and Expense - Components of Noninterest Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Other Income and Expenses [Abstract]
Base salaries, net of deferred loan origination costs	$ 94,564	$ 84,861	$ 69,844
Incentive compensation	15,557	17,908	14,957
Benefits and other compensation costs	25,674	27,083	21,550
Total salaries and benefits expense	135,795	129,852	106,351
Occupancy	16,135	15,493	14,910
Data processing and software	18,933	14,660	13,985
Equipment	5,644	5,733	5,358
ATM and POS network charges	7,080	6,984	6,040
Merger and acquisition expense	0	6,253	1,523
Advertising	3,531	3,694	2,899
Professional fees	7,358	4,392	3,657
Intangible amortization	6,118	6,334	5,464
Telecommunications	2,547	2,298	2,253
Regulatory assessments and insurance	5,276	3,142	2,581
Courier service	1,851	2,013	1,214
Operational losses	2,444	1,000	964
Postage	1,236	1,147	710
Gain on sale or acquisition of foreclosed assets	(133)	(481)	(233)
Loss (gain) on disposal of fixed assets	23	(1,070)	(439)
Other miscellaneous expense	19,344	15,201	11,038
Total other noninterest expense	97,387	86,793	71,924
Total noninterest expense	$ 233,182	$ 216,645	$ 178,275

Income Taxes - Components of Co

Income Taxes - Components of Consolidated Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current tax expense
Federal	$ 26,133	$ 34,155	$ 28,763
State	19,781	22,355	18,221
Current tax expense, Total	45,914	56,510	46,984
Deferred tax expense
Federal	(1,330)	(5,224)	(872)
State	(1,069)	(2,798)	(64)
Deferred tax benefit, Total	(2,399)	(8,022)	(936)
Total tax expense	$ 43,515	$ 48,488	$ 46,048

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Income Taxes (Textual) [Abstract]
Carrying value of low income housing tax credit funds	$ 96,900	$ 91,000
Low income housing tax credit fund commitments	63,300
Tax credits	852	$ 852
Federal
Income Taxes (Textual) [Abstract]
Net operating loss carryforwards	2,700
Tax credits	300
California
Income Taxes (Textual) [Abstract]
Net operating loss carryforwards	4,800
Tax credits	$ 600

Income Taxes - Schedule of Comp

Income Taxes - Schedule of Components of Investments in Qualified Affordable Housing Projects (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Tax credits and other tax benefits – decrease in tax expense	$ (10,857)	$ (6,370)	$ (4,224)
Amortization – increase in tax expense	$ 9,092	$ 6,178	$ 3,604

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Effective Tax Rate and Statutory Federal Income Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Federal statutory income tax rate	21%	21%	21%
State income taxes, net of federal tax benefit	7.90%	7.90%	7.90%
Tax-exempt interest on municipal obligations	(0.70%)	(0.70%)	(0.50%)
Tax-exempt life insurance related income	(0.40%)	(0.40%)	(0.50%)
Low income housing tax credits	(6.60%)	(3.70%)	(2.60%)
Low income housing tax credit amortization	5.60%	3.60%	2.20%
Equity compensation	0.30%	(0.20%)	(0.10%)
Non-deductible merger expenses	0%	0.10%	0.10%
Other	(0.10%)	0.30%	0.60%
Effective Tax Rate	27%	27.90%	28.10%

Income Taxes - Company's Net De

Income Taxes - Company's Net Deferred Tax Asset Recorded in Other Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets:
Allowance for losses and reserve for unfunded commitments	$ 37,656	$ 32,519
Deferred compensation	1,534	1,696
Other accrued expenses	3,899	2,720
Additional unfunded status of the supplemental retirement plans	15,434	16,036
Operating lease liability	8,355	8,575
State taxes	3,346	3,649
Share based compensation	1,050	1,132
Nonaccrual interest	706	643
Acquisition cost basis	12,046	14,640
Unrealized loss on securities	68,535	85,897
Tax credits	852	852
Net operating loss carryforwards	953	2,098
Other	190	120
Total deferred tax assets	154,556	170,577
Deferred tax liabilities:
Securities income	(777)	(777)
Depreciation	(8,364)	(8,270)
Right of use asset	(7,726)	(7,941)
Funded pension liability	(3,999)	(4,110)
Securities accretion	(2,265)	(1,265)
Mortgage servicing rights valuation	(1,946)	(1,976)
Core deposit intangible	(2,814)	(4,778)
Junior subordinated debt	(1,171)	(1,293)
Prepaid expenses and other	(1,170)	(991)
Total deferred tax liability	(30,232)	(31,401)
Net deferred tax asset	$ 124,324	$ 139,176

Earnings per Share - Computatio

Earnings per Share - Computation of Earnings Per Share (Detail) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Earnings Per Share [Abstract]
Net income	$ 117,390	$ 125,419	$ 117,655
Average number of common shares outstanding (in shares)	33,261	32,584	29,721
Effect of dilutive stock options and restricted stock (in shares)	94	137	161
Average number of common shares outstanding used to calculate diluted earnings per share (in shares)	33,355	32,721	29,882
Equity awards excluded from diluted earnings per share because their effect was antidilutive (in shares)	0	0	0

Comprehensive Income (Loss) - C

Comprehensive Income (Loss) - Components of Other Comprehensive Income (Loss) and Related Tax Effects (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassifications, before tax	$ 284	$ 0	$ 0
Other comprehensive income (loss)	40,736	(194,886)	(11,299)
Net unrealized loss on available for sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
OCI, before reclassifications, before tax	58,444	(290,157)	(19,575)
Reclassifications, before tax	284	0	0
OCI, after reclassifications, before tax	58,728	(290,157)	(19,575)
Tax effect	(17,363)	85,781	5,787
Other comprehensive income (loss)	41,365	(204,376)	(13,788)
Unfunded status of the supplemental retirement plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
OCI, before reclassifications, before tax	81	11,522	3,497
Reclassifications, before tax	(455)	(20)	196
OCI, after reclassifications, before tax	(374)	11,502	3,693
Tax effect	111	(3,401)	(1,091)
Other comprehensive income (loss)	(263)	8,101	2,602
Amortization of prior service cost
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassifications, before tax	0	(28)	(58)
Amortization of actuarial losses
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassifications, before tax	(455)	8	254
Joint beneficiary agreement liability, net of tax
Accumulated Other Comprehensive Income (Loss) [Line Items]
OCI, before reclassifications, before tax	(366)	1,389	(113)
Tax effect	0	0	0
OCI, before reclassifications, net of tax	$ (366)	$ 1,389	$ (113)

Comprehensive Income (Loss) -_2

Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, net of tax	$ (153,169)	$ (193,905)
Net unrealized loss on available for sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), before tax	(231,821)	(290,549)
Tax effect	68,534	85,897
Accumulated other comprehensive loss, net of tax	(163,287)	(204,652)
Unfunded status of the supplemental retirement plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), before tax	13,527	13,901
Tax effect	(3,999)	(4,110)
Accumulated other comprehensive loss, net of tax	9,528	9,791
Joint beneficiary agreement liability, net of tax
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), before tax	$ 590	$ 956

Retirement Plans - Additional I

Retirement Plans - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Employee service period under ESOP	1 year
Deferred compensation obligations	$ 5,200	$ 5,700
Cash values of the insurance policies purchased to fund deferred compensation obligations	136,892	133,742	$ 117,857
Funded status of the supplemental retirement plans	(13,527)	(13,901)
AOCI, defined benefit plan, after tax	(9,528)	(9,792)
Amortization of actuarial losses	$ 500
401(k) Plan
Defined Benefit Plan Disclosure [Line Items]
Minimum age for employees	21 years
Minimum period for employees to participate	90 days
Discretionary matching contribution equal to percentage of participant's contribution	50%
Discretionary matching contribution maximum percentage of eligible compensation	4%
Supplemental Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Cash values of the insurance policies purchased to fund deferred compensation obligations	$ 136,900	133,700
Funded status of the supplemental retirement plans	13,500	13,900
AOCI, defined benefit plan, after tax	9,500	9,800
Deferred tax liability	$ (4,000)	$ (4,100)

Retirement Plans - Summary of 4

Retirement Plans - Summary of 401(k) Contribution Plan (Detail) - 401(k) Plan - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
401(k) Plan benefits expense	$ 1,767	$ 1,541	$ 1,211
401(k) Plan contributions made by the Company	$ 1,524	$ 1,214	$ 1,121

Retirement Plans - Summary of E

Retirement Plans - Summary of ESOP Activities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Retirement Benefits [Abstract]
ESOP benefits expense	$ 3,075	$ 2,824	$ 1,888
ESOP contributions made by the Company	$ 2,977	$ 3,535	$ 878

Retirement Plans - Schedule of

Retirement Plans - Schedule of Deferred Compensation Earnings Credits Included in Noninterest Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Retirement Benefits [Abstract]
Deferred compensation earnings credits included in non-interest expense	$ 210	$ 187	$ 176

Retirement Plans - Defined Bene

Retirement Plans - Defined Benefit Pension Plans (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Retirement Benefits [Abstract]
Transition obligation	$ 0	$ 0
Prior service cost	0	0
Net actuarial (gain) / loss	(13,527)	(13,901)
Amount included in accumulated other comprehensive income (loss)	(13,527)	(13,901)
Deferred tax liability / (benefit)	3,999	4,109
Amount included in accumulated other comprehensive income (loss), net of tax	$ (9,528)	$ (9,792)

Retirement Plans - Information

Retirement Plans - Information Pertaining to Activity in Supplemental Retirement Plans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Change in benefit obligation:
Benefit obligation at beginning of year	$ (40,341)	$ (43,834)
Acquisition of obligations	0	(3,310)
Service cost	(138)	(1,624)	$ (1,103)
Interest cost	(2,016)	(1,731)	(1,518)
Actuarial (loss)/gain	81	10,266
Plan amendments	0	(2,141)
Benefits paid	3,769	2,033
Benefit obligation at end of year	(38,645)	(40,341)	$ (43,834)
Change in plan assets:
Fair value of plan assets at beginning of year	0
Fair value of plan assets at end of year	0	0
Funded status	(38,645)	(40,341)
Unrecognized net obligation existing at January 1, 1986	0	0
Unrecognized net actuarial (loss)/gain	(13,527)	(13,901)
Unrecognized prior service cost	0	0
Accumulated other comprehensive loss	13,527	13,901
Accrued benefit cost	(38,645)	(40,341)
Accumulated benefit obligation	$ (38,645)	$ (40,341)

Retirement Plans - Net Periodic

Retirement Plans - Net Periodic Benefit Cost Recognized for Supplemental Retirement Plans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net pension cost included the following components:
Service cost-benefits earned during the period	$ 138	$ 1,624	$ 1,103
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax
Interest cost on projected benefit obligation	$ 2,016	$ 1,731	$ 1,518
Amortization of net obligation at transition	$ 0	$ 0	$ 0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Amortization of Prior Service Cost (Credit), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax
Amortization of prior service cost	$ 0	$ (28)	$ (58)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Immediate Recognition of Actuarial Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax
Recognized net actuarial loss	$ 10	$ (86)	$ 254
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax
Recognized net actuarial loss	$ (466)	$ (114)	$ 0
Recognition of pension service cost to due amendment	0	2,141	0
Net periodic pension cost	$ 1,698	$ 5,268	$ 2,817

Retirement Plans - Assumptions

Retirement Plans - Assumptions Used in Accounting for Plans (Detail)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Discount rate used to calculate benefit obligation	5.01%	5.23%	2.74%
Discount rate used to calculate net periodic pension cost	5.23%	2.74%	2.40%
Executive Compensation
Defined Benefit Plan Disclosure [Line Items]
Average annual increase in compensation	0%	0%	3.25%
Director Compensation
Defined Benefit Plan Disclosure [Line Items]
Average annual increase in compensation	0%	0%	0%

Retirement Plans - Expected Ben

Retirement Plans - Expected Benefit Payments to Participants and Estimated Contributions to be Made by Company (Detail) $ in Thousands	Dec. 31, 2023 USD ($)
Expectged Benefit Payments To Participants [Roll Forward]
2024	$ 2,736
2025	2,906
2026	2,895
2027	2,916
2028	2,885
2028-2032	18,580
Estimated Company Contributions [Roll Forward]
2024	2,736
2025	2,906
2026	2,895
2027	2,916
2028	2,885
2028-2032	$ 18,580

Related Party Transactions - Su

Related Party Transactions - Summary of Activity in Lending Transactions (Detail) - Related Party - Directors and Officers - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Related Party [Roll Forward]
Beginning balance	$ 11,384	$ 6,316
Advances/new loans	0	11,960
Removed/payments	(9,851)	(6,892)
Ending balance	$ 1,533	$ 11,384

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Related Party Transactions [Abstract]
Bank deposits of directors, officers and other related parties	$ 29.7	$ 28.4

Fair Value Measurement - Record

Fair Value Measurement - Recorded Amount of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair Value Measurements on Recurring Basis - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 2,162,202	$ 2,463,594
Marketable equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,634	2,598
Obligations of U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	1,221,737	1,372,769
Obligations of states and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	236,375	293,205
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	5,602	5,751
Asset backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	355,281	439,767
Non-agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	333,509	340,946
Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	458	1,846
Mortgage servicing rights
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	6,606	6,712
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,634	2,598
Level 1 | Marketable equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,634	2,598
Level 1 | Obligations of U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value		0
Level 1 | Obligations of states and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value		0
Level 1 | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value		0
Level 1 | Asset backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value		0
Level 1 | Non-agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value		0
Level 1 | Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value		0
Level 1 | Mortgage servicing rights
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value		0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,152,962	2,454,284
Level 2 | Marketable equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value		0
Level 2 | Obligations of U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	1,221,737	1,372,769
Level 2 | Obligations of states and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	236,375	293,205
Level 2 | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	5,602	5,751
Level 2 | Asset backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	355,281	439,767
Level 2 | Non-agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	333,509	340,946
Level 2 | Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	458	1,846
Level 2 | Mortgage servicing rights
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value		0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	6,606	6,712
Level 3 | Marketable equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value		0
Level 3 | Obligations of U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value		0
Level 3 | Obligations of states and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value		0
Level 3 | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value		0
Level 3 | Asset backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value		0
Level 3 | Non-agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value		0
Level 3 | Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value		0
Level 3 | Mortgage servicing rights
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 6,606	$ 6,712

Fair Value Measurement - Additi

Fair Value Measurement - Additional Information (Detail) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Transfers between any fair value levels	$ 0	$ 0
Carrying value of loans fully charged-off	$ 0

Fair Value Measurement - Reconc

Fair Value Measurement - Reconciliation of Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs on Recurring Basis (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 6,712
Ending Balance		$ 6,712
Mortgage servicing rights
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	6,712	5,874	$ 5,092
Transfers into (out of) Level 3	0	0	0
Change Included in Earnings	(506)	301	(872)
Issuances	400	537	1,654
Ending Balance	$ 6,606	$ 6,712	$ 5,874

Fair Value Measurement - Quanti

Fair Value Measurement - Quantitative Information about Recurring Fair Value Measurements (Detail) - Mortgage servicing rights $ in Thousands	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 6,606	$ 6,712	$ 5,874	$ 5,092
Minimum | Constant prepayment rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Constant prepayment rate	0.06	0.07
Minimum | Discount rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Constant prepayment rate	0.10	0.10
Maximum | Constant prepayment rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Constant prepayment rate	0.13	0.14
Maximum | Discount rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Constant prepayment rate	0.14	0.14
Weighted Average | Constant prepayment rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Constant prepayment rate	0.07	0.08
Weighted Average | Discount rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Constant prepayment rate	0.12	0.12

Fair Value Measurement - Assets

Fair Value Measurement - Assets and Liabilities Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Individually evaluated loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 4,175	$ 5,719
Real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	50	311
Fair Value Nonrecurring Basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	4,225	6,030
Fair Value Nonrecurring Basis | Individually evaluated loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	4,175	5,719
Fair Value Nonrecurring Basis | Real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	50	311
Fair Value Nonrecurring Basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Fair Value Nonrecurring Basis | Level 1 | Individually evaluated loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Fair Value Nonrecurring Basis | Level 1 | Real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Fair Value Nonrecurring Basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Fair Value Nonrecurring Basis | Level 2 | Individually evaluated loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Fair Value Nonrecurring Basis | Level 2 | Real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Fair Value Nonrecurring Basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	4,225	6,030
Fair Value Nonrecurring Basis | Level 3 | Individually evaluated loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	4,175	5,719
Fair Value Nonrecurring Basis | Level 3 | Real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 50	$ 311

Fair Value Measurement - Quan_2

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

Fair Value Measurement - Estima

Fair Value Measurement - Estimated Fair Values of Financial Instruments that are Reported at Amortized Cost in Consolidated Balance Sheets (Detail) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Financial assets:
Cash and due from banks	$ 81,626,000	$ 96,323,000
Cash at Federal Reserve and other banks	17,075,000	10,907,000
Restricted equity securities	0	0
Financial liabilities:
Other borrowings	632,582,000	264,605,000
Junior subordinated debt	101,099,000	101,040,000
Level 3 | Overdraft privilege commitments
Off-balance sheet:
Contract amount, Off-balance sheet	121,539,000	126,634,000
Level 3 | Standby letters of credit
Off-balance sheet:
Contract amount, Off-balance sheet	38,449,000	26,599,000
Level 3 | Commitments
Off-balance sheet:
Contract amount, Off-balance sheet	2,225,677,000	2,188,560,000
Fair Value | Level 1
Financial assets:
Cash and due from banks	81,626,000	96,323,000
Cash at Federal Reserve and other banks	17,075,000	10,907,000
Fair Value | Level 2
Financial assets:
Securities held to maturity	125,126,000	149,938,000
Financial liabilities:
Deposits	7,828,554,000	8,321,517,000
Other borrowings	632,582,000	264,605,000
Fair Value | Level 3
Financial assets:
Loans, net	6,278,577,000	6,153,155,000
Financial liabilities:
Junior subordinated debt	95,407,000	92,613,000
Fair Value | Level 3 | Overdraft privilege commitments
Off-balance sheet:
Fair value, Off-balance sheet	1,215,000	1,266,000
Fair Value | Level 3 | Standby letters of credit
Off-balance sheet:
Fair value, Off-balance sheet	385,000	266,000
Fair Value | Level 3 | Commitments
Off-balance sheet:
Fair value, Off-balance sheet	22,257,000	21,886,000
Carrying Amount | Level 1
Financial assets:
Cash and due from banks	81,626,000	96,323,000
Cash at Federal Reserve and other banks	17,075,000	10,907,000
Carrying Amount | Level 2
Financial assets:
Securities held to maturity	133,494,000	160,983,000
Restricted equity securities	17,250,000	17,250,000
Financial liabilities:
Deposits	7,834,038,000	8,329,013,000
Other borrowings	632,582,000	264,605,000
Carrying Amount | Level 3
Financial assets:
Loans, net	6,672,948,000	6,344,767,000
Financial liabilities:
Junior subordinated debt	$ 101,099,000	$ 101,040,000

TriCo Bancshares Condensed Fi_3

TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents	$ 98,701	$ 107,230
Other assets	245,966	257,975
Total assets	9,910,089	9,930,986
Liabilities and shareholders’ equity
Other liabilities	145,982	159,741
Junior subordinated debt	101,099	101,040
Total liabilities	8,750,407	8,884,570
Shareholders’ equity:
Preferred stock, no par value: 1,000,000 shares authorized, zero issued and outstanding at December 31, 2023 and 2022	0	0
Common stock, no par value: 50,000,000 shares authorized; issued and outstanding: 33,268,102 and 33,331,513 at December 31, 2023 and 2022, respectively	697,349	697,448
Retained earnings	615,502	542,873
Accumulated other comprehensive loss, net	(153,169)	(193,905)
Total shareholders’ equity	1,159,682	1,046,416	$ 1,000,184	$ 925,114
Total liabilities and shareholders’ equity	9,910,089	9,930,986
Parent
Assets
Cash and cash equivalents	6,356	7,987
Investment in Tri Counties Bank	1,253,492	1,138,429
Other assets	1,872	1,818
Total assets	1,261,720	1,148,234
Liabilities and shareholders’ equity
Other liabilities	939	778
Junior subordinated debt	101,099	101,040
Total liabilities	102,038	101,818
Shareholders’ equity:
Preferred stock, no par value: 1,000,000 shares authorized, zero issued and outstanding at December 31, 2023 and 2022	0	0
Common stock, no par value: 50,000,000 shares authorized; issued and outstanding: 33,268,102 and 33,331,513 at December 31, 2023 and 2022, respectively	697,349	697,448
Retained earnings	615,502	542,873
Accumulated other comprehensive loss, net	(153,169)	(193,905)
Total shareholders’ equity	1,159,682	1,046,416
Total liabilities and shareholders’ equity	$ 1,261,720	$ 1,148,234

TriCo Bancshares Condensed Fi_4

TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Balance Sheets (Parenthetical) (Detail) - $ / shares	Dec. 31, 2023	Dec. 31, 2022
Condensed Financial Statements, Captions [Line Items]
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	33,268,102	33,331,513
Common stock, shares outstanding (in shares)	33,268,102	33,331,513

TriCo Bancshares Condensed Fi_5

TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Statements of Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Condensed Financial Statements, Captions [Line Items]
Net interest expense	$ (81,677)	$ (9,529)	$ (5,508)
Income before income taxes	160,905	173,907	163,703
Equity in net income of Tri Counties Bank:
Income tax benefit	(43,515)	(48,488)	(46,048)
Net income	117,390	125,419	117,655
Parent
Condensed Financial Statements, Captions [Line Items]
Net interest expense	(6,878)	(4,385)	(2,128)
Administration expense	(1,096)	(816)	(985)
Income before income taxes	(7,974)	(5,201)	(3,113)
Equity in net income of Tri Counties Bank:
Distributed	52,805	64,188	31,571
Undistributed	70,202	64,896	88,289
Income tax benefit	2,357	1,536	908
Net income	$ 117,390	$ 125,419	$ 117,655

TriCo Bancshares Condensed Fi_6

TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Statements of Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Condensed Financial Statements, Captions [Line Items]
Net income	$ 117,390	$ 125,419	$ 117,655
Other comprehensive income (loss), net of tax:
Increase (decrease) in unrealized gains on available for sale securities arising during the period	41,365	(204,376)	(13,788)
Change in minimum pension liability	(263)	8,101	2,602
Change in joint beneficiary agreement liability	(366)	1,389	(113)
Other comprehensive income (loss)	40,736	(194,886)	(11,299)
Comprehensive income (loss)	158,126	(69,467)	106,356
Parent
Condensed Financial Statements, Captions [Line Items]
Net income	117,390	125,419	117,655
Other comprehensive income (loss), net of tax:
Increase (decrease) in unrealized gains on available for sale securities arising during the period	41,365	(204,376)	(13,788)
Change in minimum pension liability	(263)	8,101	2,602
Change in joint beneficiary agreement liability	(366)	1,389	(113)
Other comprehensive income (loss)	40,736	(194,886)	(11,299)
Comprehensive income (loss)	$ 158,126	$ (69,467)	$ 106,356

TriCo Bancshares Condensed Fi_7

TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Statements of Cash Flows (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating activities:
Net income	$ 117,390	$ 125,419	$ 117,655
Adjustments to reconcile net income to net cash provided by operating activities:
Equity compensation vesting expense	4,125	3,869	2,638
Net cash from operating activities	138,887	162,895	132,207
Investing activities:
Sales or maturities of investments	0	4,234	0
Financing activities:
Issuance of common stock through option exercise	156	1,190	144
Repurchase of common stock	(9,240)	(27,148)	(4,344)
Cash dividends paid — common	(39,901)	(35,797)	(29,724)
Net cash (used in) from financing activities	(175,983)	(100,862)	850,474
Net change in cash and cash equivalents	(8,529)	(661,191)	98,870
Cash and cash equivalents at beginning of year	107,230	768,421	669,551
Cash and cash equivalents at end of year	98,701	107,230	768,421
Parent
Operating activities:
Net income	117,390	125,419	117,655
Adjustments to reconcile net income to net cash provided by operating activities:
Undistributed equity in earnings of Tri Counties Bank	(70,202)	(64,896)	(88,289)
Equity compensation vesting expense	4,125	3,869	2,638
Net change in other assets and liabilities	(3,959)	(3,834)	(6,427)
Net cash from operating activities	47,354	60,558	25,577
Financing activities:
Issuance of common stock through option exercise	156	1,190	144
Repurchase of common stock	(9,240)	(27,148)	(4,344)
Cash dividends paid — common	(39,901)	(35,797)	(29,724)
Net cash (used in) from financing activities	(48,985)	(61,755)	(33,924)
Net change in cash and cash equivalents	(1,631)	3,037	(8,347)
Cash and cash equivalents at beginning of year	7,987	4,950	13,297
Cash and cash equivalents at end of year	$ 6,356	$ 7,987	$ 4,950

Regulatory Matters - Actual and

Regulatory Matters - Actual and Required Capital Ratios of Bank (Detail) $ in Thousands	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Parent
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Actual, Amount	$ 1,196,106	$ 1,115,257
Tier 1 Capital (to Risk Weighted Assets), Actual, Amount	1,052,063	974,325
Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual, Amount	994,907	917,565
Tier 1 Capital (to Average Assets), Actual, Amount	$ 1,052,063	$ 974,325
Total Capital (to Risk Weighted Assets), Actual, Ratio	0.1473	0.1419
Tier 1 Capital (to Risk Weighted Assets), Actual, Ratio	0.1295	0.1240
Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual, Ratio	0.1225	0.1167
Tier 1 Capital (to Average Assets), Actual, Ratio	0.1075	0.1014
Parent | Required for Capital Adequacy Purposes
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	$ 852,850	$ 825,234
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	690,402	668,047
Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	568,566	550,156
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Amount	$ 391,620	$ 384,337
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	0.1050	0.1050
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	0.0850	0.0850
Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	7%	7%
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Ratio	0.0400	0.0400
Tri Counties Bank
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Actual, Amount	$ 1,190,542	$ 1,107,941
Tier 1 Capital (to Risk Weighted Assets), Actual, Amount	1,088,717	1,009,577
Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual, Amount	1,088,717	1,009,577
Tier 1 Capital (to Average Assets), Actual, Amount	$ 1,088,717	$ 1,009,577
Total Capital (to Risk Weighted Assets), Actual, Ratio	0.1466	0.1410
Tier 1 Capital (to Risk Weighted Assets), Actual, Ratio	0.1341	0.1285
Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual, Ratio	0.1341	0.1285
Tier 1 Capital (to Average Assets), Actual, Ratio	0.1112	0.1051
Total Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 812,046	$ 785,751
Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	649,637	628,601
Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	527,830	510,738
Tier 1 Capital (to Average Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 489,468	$ 480,183
Total Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.1000	0.1000
Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.0800	0.0800
Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.50%	6.50%
Tier 1 Capital (to Average Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.0500	0.0500
Tri Counties Bank | Required for Capital Adequacy Purposes
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	$ 852,648	$ 825,039
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	690,239	667,888
Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	568,432	550,026
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Amount	$ 391,574	$ 384,146
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	0.1050	0.1050
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	0.0850	0.0850
Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	7%	7%
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Ratio	0.0400	0.0400