TriCo Bancshares (TCBK) 10-Q 10 Aug 15 2015 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Jul. 24, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q2
Trading Symbol	TCBK
Entity Registrant Name	TRICO BANCSHARES /
Entity Central Index Key	356,171
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		22,749,523

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Assets:
Cash and due from banks	$ 92,234	$ 93,150
Cash at Federal Reserve and other banks	77,269	517,578
Cash and cash equivalents	169,503	610,728
Investment securities:
Available for sale	284,430	83,205
Held to maturity	776,283	676,426
Restricted equity securities	16,956	16,956
Loans held for sale	4,630	3,579
Loans	2,393,762	2,282,524
Allowance for loan losses	(35,455)	(36,585)
Total loans, net	2,358,307	2,245,939
Foreclosed assets, net	5,393	4,894
Premises and equipment, net	42,056	43,493
Cash value of life insurance	93,687	92,337
Accrued interest receivable	10,064	9,275
Goodwill	63,462	63,462
Other intangible assets, net	6,473	7,051
Mortgage servicing rights	7,814	7,378
Other assets	54,797	51,735
Total assets	3,893,855	3,916,458
Deposits:
Noninterest-bearing demand	1,060,650	1,083,900
Interest-bearing	2,281,032	2,296,523
Total deposits	3,341,682	3,380,423
Accrued interest payable	797	978
Reserve for unfunded commitments	2,125	2,145
Other liabilities	55,003	49,192
Other borrowings	6,735	9,276
Junior subordinated debt	56,369	56,272
Total liabilities	$ 3,462,711	$ 3,498,286
Commitments and contingencies (Note 18)
Shareholders' equity:
Common stock, no par value: 50,000,000 shares authorized; issued and outstanding: 22,749,523 at June 30, 2015 22,714,964 at December 31, 2014	$ 245,965	$ 244,318
Retained earnings	189,905	176,057
Accumulated other comprehensive loss, net of tax	(4,726)	(2,203)
Total shareholders' equity	431,144	418,172
Total liabilities and shareholders' equity	$ 3,893,855	$ 3,916,458

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares None in scaling factor is -9223372036854775296	Jun. 30, 2015	Dec. 31, 2014	Aug. 21, 2007
Statement of Financial Position [Abstract]
Common stock, no par value
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	22,749,523	22,714,964
Common stock, shares outstanding	22,749,523	22,714,964	15,814,662

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Interest and dividend income:
Loans, including fees	$ 32,019	$ 24,433	$ 63,184	$ 48,171
Investment securities:
Taxable	6,403	3,440	12,202	6,262
Tax exempt	324	117	485	253
Dividends	977	154	1,313	308
Interest bearing cash at Federal Reserve and other banks	144	274	408	583
Total interest and dividend income	39,867	28,418	77,592	55,577
Interest expense:
Deposits	854	768	1,753	1,550
Other borrowings	1	1	2	2
Junior subordinated debt	491	306	973	610
Total interest expense	1,346	1,075	2,728	2,162
Net interest income	38,521	27,343	74,864	53,415
(Benefit from) provision for loan losses	(633)	1,708	(436)	353
Net interest income after provision for (benefit from) loan losses	39,154	25,635	75,300	53,062
Noninterest income:
Service charges and fees	8,848	5,519	16,192	10,981
Gain on sale of loans	837	514	1,459	978
Commissions on sale of non-deposit investment products	784	843	1,749	1,614
Increase in cash value of life insurance	675	400	1,350	797
Other	936	601	1,510	1,802
Total noninterest income	12,080	7,877	22,260	16,172
Noninterest expense:
Salaries and related benefits	17,242	13,317	35,342	26,620
Other	15,194	11,799	29,376	21,813
Total noninterest expense	32,436	25,116	64,718	48,433
Income before income taxes	18,798	8,396	32,842	20,801
Provision for income taxes	7,432	3,537	13,140	8,577
Net income	$ 11,366	$ 4,859	$ 19,702	$ 12,224
Earnings per share:
Basic	$ 0.50	$ 0.30	$ 0.87	$ 0.76
Diluted	$ 0.49	$ 0.30	$ 0.86	$ 0.75

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended						6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 11,366	$ 8,336	$ 5,650	$ 8,234	$ 4,859	$ 7,365	$ 19,702	$ 12,224
Other comprehensive (loss) income, net of tax:
Unrealized (losses) gains on available for sale securities arising during the period	(2,754)				381		(2,745)	321
Change in minimum pension liability	111				5		222	10
Other comprehensive (loss) income	(2,643)				386		(2,523)	331
Comprehensive income	$ 8,723				$ 5,245		$ 17,179	$ 12,555

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning balance at Dec. 31, 2013	$ 250,946	$ 89,356	$ 159,733	$ 1,857
Beginning balance, shares at Dec. 31, 2013		16,076,662
Net income	12,224		12,224
Other comprehensive income (loss)	331			331
Stock option vesting	534	$ 534
Stock options exercised	2,786	$ 2,786
Stock options exercised, shares		160,020
Tax benefit of stock options exercised	220	$ 220
Repurchase of common stock	(2,551)	$ (574)	(1,977)
Repurchase of common stock, shares		(103,268)
Dividends paid	(3,547)		(3,547)
Ending balance at Jun. 30, 2014	260,943	$ 92,322	166,433	2,188
Ending balance, shares at Jun. 30, 2014		16,133,414
Beginning balance at Dec. 31, 2014	$ 418,172	$ 244,318	176,057	(2,203)
Beginning balance, shares at Dec. 31, 2014	22,714,964	22,714,964
Net income	$ 19,702		19,702
Other comprehensive income (loss)	(2,523)			(2,523)
Stock option vesting	419	$ 419
RSU vesting	202	202
PSU vesting	77	77
Stock options exercised	$ 1,236	$ 1,236
Stock options exercised, shares	64,000	64,000
Tax benefit of stock options exercised	$ 30	$ 30
Repurchase of common stock	(698)	$ (317)	(381)
Repurchase of common stock, shares		(29,441)
Dividends paid	(5,473)		(5,473)
Ending balance at Jun. 30, 2015	$ 431,144	$ 245,965	$ 189,905	$ (4,726)
Ending balance, shares at Jun. 30, 2015	22,749,523	22,749,523

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Dividends paid, per share	$ 0.24	$ 0.22
Retained Earnings [Member]
Dividends paid, per share	$ 0.24	$ 0.22

Condensed Consolidated Stateme8

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Operating activities:
Net income	$ 19,702	$ 12,224
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of premises and equipment, and amortization	3,090	2,704
Amortization of intangible assets	578	104
(Benefit from) provision for loan losses	(436)	353
Amortization of investment securities premium, net	1,645	349
Originations of loans for resale	(55,669)	(31,032)
Proceeds from sale of loans originated for resale	55,656	32,333
Gain on sale of loans	(1,459)	(978)
Change in market value of mortgage servicing rights	(15)	532
Provision for losses on foreclosed assets	241	40
Gain on sale of foreclosed assets	(426)	(1,468)
Loss (gain) on disposal of fixed assets	83	(70)
Increase in cash value of life insurance	(1,350)	(797)
Equity compensation vesting expense	698	534
Stock option excess tax benefits	(30)	(220)
Change in:
Reserve for unfunded commitments	(20)	(370)
Interest receivable	(789)	(492)
Interest payable	(181)	(89)
Other assets and liabilities, net	4,249	(2,256)
Net cash from operating activities	25,567	11,401
Investing activities:
Proceeds from maturities of securities available for sale	13,941	13,464
Proceeds from maturities of securities held to maturity	45,078	9,548
Purchases of securities available for sale	(220,383)
Purchases of securities held to maturity	(146,100)	(191,673)
Purchase of restricted equity securities		(2,419)
Loan origination and principal collections, net	(112,372)	(49,635)
Loans purchased		(19,690)
Improvement of foreclosed assets	(511)	(462)
Proceeds from sale of other real estate owned	1,033	6,483
Proceeds from sale of premises and equipment	2	120
Purchases of premises and equipment	(1,293)	(2,483)
Net cash used by investing activities	(420,605)	(236,747)
Financing activities:
Net decrease in deposits	(38,741)	(25,287)
Net change in other borrowings	(2,541)	(260)
Stock option excess tax benefits	30	220
Repurchase of common stock	(31)	(292)
Dividends paid	(5,473)	(3,547)
Exercise of stock options	569	527
Net cash used by financing activities	(46,187)	(28,639)
Net change in cash and cash equivalents	(441,225)	(253,985)
Cash and cash equivalents and beginning of year	610,728	598,368
Cash and cash equivalents at end of period	169,503	344,383
Supplemental disclosure of noncash activities:
Unrealized (loss) gain on securities available for sale	(4,737)	553
Loans transferred to foreclosed assets	1,649	4,116
Market value of shares tendered in-lieu of cash to pay for exercise of options and/or related taxes	667	2,259
Supplemental disclosure of cash flow activity:
Cash paid for interest expense	2,909	2,251
Cash paid for income taxes	$ 7,395	$ 11,500

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 1 – Summary of Significant Accounting Policies Description of Business and Basis of Presentation TriCo Bancshares (the “Company”) is a California corporation organized to act as a bank holding company for Tri Counties Bank (the “Bank”). The Company and the Bank are headquartered in Chico, California. The Bank is a California-chartered bank that is engaged in the general commercial banking business in 26 California counties. Tri Counties Bank currently operates from 57 traditional branches and 16 in-store branches. The Company has five capital subsidiary business trusts (collectively, the Capital Trusts) that issued trust preferred securities, including two organized by TriCo and three acquired with the acquisition of North Valley Bancorp. See Note 17 – Junior Subordinated Debt. The unaudited condensed financial statements of the Company have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission. Certain information and note disclosures normally included in annual financial statements prepared in accordance with generally accepted accounting principles have been condensed or omitted pursuant to those rules and regulations, although the Company believes that the disclosures made are adequate to make the information not misleading. In the opinion of Management, all adjustments, consisting solely of normal recurring adjustments, considered necessary for a fair presentation of results for the interim periods presented have been included. These interim condensed consolidated financial statements should be read in conjunction with the financial statements and related notes contained in the Company’s 2014 Annual Report on Form 10-K filed with the Securities and Exchange Commission on March 13, 2015. Operating results for the three and six months ended June 30, 2014 do not include the operating results of North Valley Bancorp, which the Company acquired on October 3, 2014. The condensed consolidated financial statements include the accounts of the Company and its wholly-owned financial subsidiary, Tri Counties Bank. All significant intercompany balances and transactions have been eliminated. The Capital Trusts are unconsolidated subsidiaries as the Company is not the primary beneficiary of the trusts and they are not considered variable interest entities. Operating results for the three and six months ended June 30, 2015 are not necessarily indicative of the results that may be expected for the year ending December 31, 2015. Certain amounts in the consolidated financial statements for the year ended December 31, 2014 and for the three and six months ended June 30, 2014 may have been reclassified to conform to the presentation of the condensed consolidated financial statements in 2015. 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 evaluates its estimates on an on-going basis. 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. As described in Note 2, the Company acquired North Valley Bancorp on October 3, 2014. The acquired assets and assumed liabilities were measured at estimated fair value values under the acquisition method of accounting. The Company made significant estimates and exercised significant judgment in accounting for the acquisition. The Company determined loan fair values based on loan file reviews, loan risk ratings, appraised collateral values, expected cash flows and historical loss factors. Foreclosed assets were primarily valued based on appraised values of the repossessed loan collateral. Land and building were valued based on appraised values. An identifiable intangible was also recorded representing the fair value of the core deposit customer base based on an evaluation of the cost of such deposits relative to alternative funding sources. The fair value of time deposits and borrowings were determined based on the present value of estimated future cash flows using current rates as of the acquisition date. Significant Group Concentration of Credit Risk The Company grants agribusiness, commercial, consumer, and residential loans to customers located throughout the northern San Joaquin Valley, the Sacramento Valley and northern mountain regions of 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. 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. Investment Securities The Company classifies its debt and marketable equity 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. 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. Available for sale 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. Premiums and discounts are amortized or accreted over the life of the related investment security as an adjustment to yield using the effective interest method. Dividend and interest income are recognized when earned. Realized gains and losses are derived from the amortized cost of the security sold. During the six months ended June 30, 2015, and the year ended December 31, 2014, the Company did not have any securities classified as trading. The Company assesses other-than-temporary impairment (“OTTI”) based on whether it intends to sell a security or if it is likely that the Company would be required to sell the security before recovery of the amortized cost basis of the investment, which may be maturity. For debt securities, if we intend to sell the security or it is likely that we will be required to sell the security before recovering its cost basis, the entire impairment loss would be recognized in earnings as an OTTI. If we do not intend to sell the security and it is not likely that we will be required to sell the security but we do not expect to recover the entire amortized cost basis of the security, only the portion of the impairment loss representing credit losses would be recognized in earnings. The credit loss on a security is measured as the difference between the amortized cost basis and the present value of the cash flows expected to be collected. Projected cash flows are discounted by the original or current effective interest rate depending on the nature of the security being measured for potential OTTI. The remaining impairment related to all other factors, the difference between the present value of the cash flows expected to be collected and fair value, is recognized as a charge to other comprehensive income (“OCI”). Impairment losses related to all other factors are presented as separate categories within OCI. The accretion of the amount recorded in OCI increases the carrying value of the investment and does not affect earnings. If there is an indication of additional credit losses the security is re-evaluated according to the procedures described above. No OTTI losses were recognized during the six months ended June 30, 2015 or the year ended December 31, 2014. 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 Company 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 Company 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. 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 noninterest 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 Loan Losses Loans originated by the Company, i.e., not purchased or acquired in a business combination, are referred to as originated loans. Originated 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 of the related loan’s yield over the actual life of the loan. Originated loans on which the accrual of interest has been discontinued are designated as nonaccrual loans. Originated 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 an originated 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 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. An allowance for loan losses for originated loans is established through a provision for loan losses charged to expense. The allowance is maintained at a level which, in Management’s judgment, is adequate to absorb probable incurred credit losses inherent in the loan portfolio as of the balance sheet date. Originated loans and deposit related overdrafts are charged against the allowance for loan losses when Management believes that the collectability of the principal is unlikely or, with respect to consumer installment loans, according to an established delinquency schedule. The allowance is an amount that Management believes will be adequate to absorb probable incurred losses inherent in existing loans and leases, based on evaluations of the collectability, impairment and prior loss experience of loans and leases. The evaluations take into consideration such factors as changes in the nature and size of the portfolio, overall portfolio quality, loan concentrations, specific problem loans, and current economic conditions that may affect the borrower’s ability to pay. The Company defines an originated loan as impaired when it is probable the Company will be unable to collect all amounts due according to the contractual terms of the loan agreement. Impaired originated loans are measured based on the present value of expected future cash flows discounted at the loan’s original effective interest rate. As a practical expedient, impairment may be measured based on the loan’s observable market price or the fair value of the collateral if the loan is collateral dependent. When the measure of the impaired loan is less than the recorded investment in the loan, the impairment is recorded through a valuation allowance. In situations related to originated loans where, for economic or legal reasons related to a borrower’s financial difficulties, the Company grants a concession for other than an insignificant period of time to the borrower that the Company would not otherwise consider, the related loan is classified as a troubled debt restructuring (TDR). The Company strives to identify borrowers in financial difficulty early and work with them to modify to more affordable terms before their loan reaches nonaccrual status. These modified terms may include rate reductions, principal forgiveness, payment forbearance and other actions intended to minimize the economic loss and to avoid foreclosure or repossession of the collateral. In cases where the Company grants the borrower new terms that result in the loan being classified as a TDR, the Company measures any impairment on the restructuring as noted above for impaired loans. TDR loans are classified as impaired until they are fully paid off or charged off. Loans that are in nonaccrual status at the time they become TDR loans, remain in nonaccrual status until the borrower demonstrates a sustained period of performance which the Company generally believes to be six consecutive months of payments, or equivalent. Otherwise, TDR loans are subject to the same nonaccrual and charge-off policies as noted above with respect to their restructured principal balance. Credit risk is inherent in the business of lending. As a result, the Company maintains an allowance for loan losses to absorb probable incurred losses inherent in the Company’s originated loan portfolio. This is maintained through periodic charges to earnings. These charges are included in the Consolidated Statements of Income as provision for loan losses. All specifically identifiable and quantifiable losses are immediately charged off against the allowance. However, for a variety of reasons, not all losses are immediately known to the Company and, of those that are known, the full extent of the loss may not be quantifiable at that point in time. The balance of the Company’s allowance for originated loan losses is meant to be an estimate of these unknown but probable losses inherent in the portfolio. The Company formally assesses the adequacy of the allowance for originated loan losses on a quarterly basis. Determination of the adequacy is based on ongoing assessments of the probable risk in the outstanding originated loan portfolio, and to a lesser extent the Company’s originated loan commitments. These assessments include the periodic re-grading of credits based on changes in their individual credit characteristics including delinquency, seasoning, recent financial performance of the borrower, economic factors, changes in the interest rate environment, growth of the portfolio as a whole or by segment, and other factors as warranted. Loans are initially graded when originated. They are re-graded as they are renewed, when there is a new loan to the same borrower, when identified facts demonstrate heightened risk of nonpayment, or if they become delinquent. Re-grading of larger problem loans occurs at least quarterly. Confirmation of the quality of the grading process is obtained by independent credit reviews conducted by consultants specifically hired for this purpose and by various bank regulatory agencies. The Company’s method for assessing the appropriateness of the allowance for originated loan losses includes specific allowances for impaired originated loans, formula allowance factors for pools of credits, and allowances for changing environmental factors (e.g., interest rates, growth, economic conditions, etc.). Allowance factors for loan pools were based on historical loss experience by product type and prior risk rating. During the three months ended March 31, 2014, the Company modified its methodology used to determine the allowance for changing environmental factors by adding a new environmental factor based on the California Home Affordability Index (“CHAI”). The CHAI measures the percentage of households in California that can afford to purchase the median priced home in California based on current home prices and mortgage interest rates. The use of the CHAI environmental factor consists of comparing the current CHAI to its historical baseline, and allows management to consider the adverse impact that a lower than historical CHAI may have on general economic activity and the performance of our borrowers. Based on an analysis of historical data, management believes this environmental factor gives a better estimate of current economic activity compared to other environmental factors that may lag current economic activity to some extent. This change in methodology resulted in no change to the allowance for loan losses as of March 31, 2014 compared to what it would have been without this change in methodology. During the three months ended June 30, 2014, the Company refined the method it uses to evaluate historical losses for the purpose of estimating the pool allowance for unimpaired loans. In the third quarter of 2010, the Company moved from a six point grading system (Grades A-F) to a nine point risk rating system (Risk Ratings 1-9), primarily to allow for more distinction within the “Pass” risk rating. Initially, there was not sufficient loss experience within the nine point scale to complete a migration analysis for all nine risk ratings, all loans risk rated Pass or 2-5 were grouped together, a loss rate was calculated for that group, and that loss rate was established as the loss rate for risk rating 4. The reserve ratios for risk ratings 2, 3 and 5 were then interpolated from that figure. As of June 30, 2014, the Company was able to compile twelve quarters of historical loss information for all risk ratings and use that information to calculate the loss rates for each of the nine risk ratings without interpolation. This refinement led to an increase of $1,438,000 in the reserve requirement for unimpaired loans, driven primarily by home equity lines of credit with a risk rating of 5 or “Pass-Watch.” Loans purchased or acquired in a business combination are referred to as acquired loans. Acquired loans are valued as of the acquisition date in accordance with Financial Accounting Standards Board Accounting Standards Codification (“FASB ASC”) Topic 805, Business Combinations Loans and Debt Securities Acquired with Deteriorated Credit Quality Acquired loans that are not PCI loans are referred to as purchased not credit impaired (PNCI) loans. PNCI loans are accounted for under FASB ASC Topic 310-20, Receivables – Nonrefundable Fees and Other Costs, Throughout these financial statements, and in particular in Note 4 and Note 5, when we refer to “Loans” or “Allowance for loan losses” we mean all categories of loans, including Originated, PNCI, PCI – cash basis, and PCI - other. When we are not referring to all categories of loans, we will indicate which we are referring to – Originated, PNCI, PCI – cash basis, or PCI - other. When referring to PNCI and PCI loans we use the terms “nonaccretable difference”, “accretable yield”, or “purchase discount”. Nonaccretable difference is the difference between undiscounted contractual cash flows due and undiscounted cash flows we expect to collect, or put another way, it is the undiscounted contractual cash flows we do not expect to collect. Accretable yield is the difference between undiscounted cash flows we expect to collect and the value at which we have recorded the loan on our financial statements. On the date of acquisition, all purchased loans are recorded on our consolidated financial statements at estimated fair value. Purchase discount is the difference between the estimated fair value of loans on the date of acquisition and the principal amount owed by the borrower, net of charge offs, on the date of acquisition. We may also refer to “discounts to principal balance of loans owed, net of charge-offs”. Discounts to principal balance of loans owed, net of charge-offs is the difference between principal balance of loans owed, net of charge-offs, and loans as recorded on our financial statements. Discounts to principal balance of loans owed, net of charge-offs arise from purchase discounts, and equal the purchase discount on the acquisition date. Loans are also categorized as “covered” or “noncovered”. Covered loans refer to loans covered by a Federal Deposit Insurance Corporation (“FDIC”) loss sharing agreement. Noncovered loans refer to loans not covered by a FDIC loss sharing agreement. 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 less estimated costs to sell at the date of foreclosure, establishing a new cost basis. 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. 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. Revenue and expenses from operations and changes in the valuation allowance are included in other noninterest expense. Gain or loss on sale of foreclosed assets is included in noninterest income. Foreclosed assets that are not subject to a FDIC loss-share agreement are referred to as noncovered foreclosed assets. Foreclosed assets acquired through FDIC-assisted acquisitions that are subject to a FDIC loss-share agreement, and all assets acquired via foreclosure of covered loans are referred to as covered foreclosed assets. Covered foreclosed assets are reported exclusive of expected reimbursement cash flows from the FDIC. Foreclosed covered loan collateral is transferred into covered foreclosed assets at the loan’s carrying value, inclusive of the acquisition date fair value discount. Covered foreclosed assets are initially recorded at estimated fair value less estimated costs to sell on the acquisition date based on similar market comparable valuations less estimated selling costs. Any subsequent valuation adjustments due to declines in fair value will be charged to noninterest expense, and will be mostly offset by noninterest income representing the corresponding increase to the FDIC indemnification asset for the offsetting loss reimbursement amount. Any recoveries of previous valuation adjustments will be credited to noninterest expense with a corresponding charge to noninterest income for the portion of the recovery that is due to the FDIC. 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 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. Goodwill and Other Intangible Assets Goodwill represents the excess of costs over fair value of net assets of businesses acquired. Goodwill and other intangible assets acquired in a purchase business combination and determined to have an indefinite useful life are not amortized, but instead tested for impairment at least annually. Intangible assets with estimable useful lives are amortized over their respective estimated useful lives to their estimated residual values, and reviewed for impairment. The Company has an identifiable intangible asset consisting of core deposit intangibles (CDI). CDI are amortized over their respective estimated useful lives, and reviewed for impairment. Impairment of Long-Lived Assets and Goodwill 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. As of December 31 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. This determination is made at the reporting unit level. The Company may choose to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, the Company determines it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then goodwill is deemed not to be impaired. However, if the Company concludes otherwise, or if the Company elected not to first assess qualitative factors, then the Company performs the first step of a two-step impairment test by calculating the fair value of the reporting unit and comparing the fair value with the carrying amount of the reporting unit. Second, if the carrying amount of the reporting unit exceeds its fair value, an impairment loss is recognized for any excess of the carrying amount of the reporting unit’s goodwill over the implied fair value of that goodwill. The implied fair value of goodwill is determined by allocating the fair value of the reporting unit in a manner similar to a purchase price allocation. The residual fair value after this allocation is the implied fair value of the reporting unit goodwill. Currently, and historically, the Company is comprised of only one reporting unit that operates within the business segment it has identified as “community banking”. Goodwill was not impaired as of December 31, 2014 because the fair value of the reporting unit exceeded its carrying value. 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 noninterest 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 are recorded in noninterest income when earned. 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. The Company uses an independent third party to determine fair value of MSR. Indemnification Asset/Liability The Company accounts for amounts receivable or payable under its loss-share agreements entered into with the FDIC in connection with its purchase and assumption of certain assets and liabilities of Granite as indemnification assets in accordance with FASB ASC Topic 805, Business Combinations Reserve for Unfunded Commitments The reserve for unfunded commitments is established through a provision for losses – unfunded commitments charged to noninterest expense. The reserve for unfunded commitments is an amount that Management believes will be adequate to absorb probable losses inherent in existing commitments, including unused portions of revolving lines of credits and other loans, standby letters of credits, and unused deposit account overdraft privilege. The reserve for unfunded commitments is based on evaluations of the collectability, and prior loss experience of unfunded commitments. The evaluations take into consideration such factors as changes in the nature and size of the loan portfolio, overall loan portfolio quality, loan concentrations, specific problem loans and related unfunded commitments, and current economic conditions that may affect the borrower’s or depositor’s ability to pay. 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 fina

Business Combinations

Business Combinations	6 Months Ended
	Jun. 30, 2015
Business Combinations [Abstract]
Business Combinations	Note 2 - Business Combinations TriCo completed its acquisition of North Valley Bancorp on October 3, 2014. Based on a fixed exchange ratio of 0.9433 shares of TriCo common stock for each share of North Valley Bancorp common stock, North Valley Bancorp shareholders received an aggregate of 6,575,550 shares of TriCo common stock and $6,823 of cash in-lieu of fractional shares. The 6,575,550 shares of TriCo common stock issued to North Valley Bancorp shareholders represented, on a pro forma basis, approximately 28.9% of the 22,714,964 shares of the combined company outstanding on October 3, 2014. Based on TriCo’s closing stock price of $23.01 on October 3, 2014, North Valley Bancorp shareholders received consideration valued at $151,310,000 or approximately $21.71 per share of North Valley common stock outstanding. The acquisition of North Valley Bancorp expanded the Company’s market presence in Northern California. The customer base and locations of North Valley Bancorp’s branches had significant overlap with the Company’s then existing Northern California customer base and branch locations creating potential cost savings and future growth potential. With the levels of excess capital at the time, the acquisitions fit well into the Company’s growth strategy. North Valley Bancorp, was headquartered in Redding, California, and was the parent of North Valley Bank that had approximately $935 million in assets and 22 commercial banking offices in Shasta, Humboldt, Del Norte, Mendocino, Yolo, Sonoma, Placer and Trinity Counties in Northern California at June 30, 2014. In connection with the acquisition, North Valley Bank was merged into Tri Counties Bank on October 3, 2014. On October 25, 2014, North Valley Bank’s electronic customer service and other data processing systems were converted into Tri Counties Bank’s systems. Between January 7, 2015 and January 21, 2015, four Tri Counties Bank branches and four former North Valley Bank branches were consolidated into other Tri Counties Bank or other former North Valley Bank branches. Beginning on October 4, 2014, the effect of revenue and expenses from the operations of North Valley Bancorp, and the issuance of TriCo common shares as consideration in the merger are included in the results of the Company. The assets acquired and liabilities assumed from North Valley Bancorp were accounted for in accordance with ASC 805 “Business Combinations,” using the acquisition method of accounting and were recorded at their estimated fair values on the October 3, 2014 acquisition date, and its results of operations are included in the Company’s consolidated statements of income since that date. These fair value estimates are considered provisional, as additional analysis will be performed on certain assets and liabilities in which fair values are primarily determined through the use of inputs that are not observable from market-based information. Management may further adjust the provisional fair values for a period of up to one year from the date of the acquisition. The excess of the fair value of consideration transferred over total identifiable net assets was recorded as goodwill. The goodwill arising from the acquisition consists largely of the synergies and economies of scale expected from combining the operations of the Company and North Valley Bancorp. None of the goodwill is deductible for income tax purposes as the acquisition was accounted for as a tax-free exchange. The assets and liabilities that continue to be provisional include loans, intangible assets, OREO, deferred tax assets, accrued assets and liabilities, and the residual effects that the adjustments would have on goodwill. The following table discloses the calculation of the fair value of consideration transferred, the total identifiable net assets acquired and the resulting goodwill relating to the North Valley Bancorp acquisition: (in thousands) North Valley Bancorp Fair value of consideration transferred: Fair value of shares issued $ 151,303 Cash consideration 7 Total fair value of consideration transferred 151,310 Asset acquired: Cash and cash equivalents 141,412 Securities available for sale 17,288 Securities held to maturity 189,950 Restricted equity securities 5,378 Loans 499,327 Foreclosed assets 695 Premises and equipment 11,936 Cash value of life insurance 38,075 Core deposit intangible 6,614 Other assets 20,064 Total assets acquired 930,739 Liabilities assumed: Deposits 801,956 Other liabilities 10,429 Junior subordinated debt 14,987 Total liabilities assumed 827,372 Total net assets acquired 103,367 Goodwill recognized $ 47,943 A summary of the estimated fair value adjustments resulting in the goodwill recorded in the North Valley Bancorp acquisition are presented below: (in thousands) North Valley Bancorp Value of stock consideration paid to North Valley Bancorp Shareholders $ 151,303 Cash payments to North Valley Bancorp Shareholders 7 Cost basis net assets acquired (98,040 ) Fair value adjustments: Loans 5,832 Premises and Equipment (4,785 ) Core deposit intangible (6,283 ) Deferred income taxes 6,293 Junior subordinated debt (6,664 ) Other 280 Goodwill $ 47,943 The Company recorded the loan portfolio of North Valley Bancorp at fair value at the date of acquisition. A valuation of North Valley Bancorp’s loan portfolio was performed as of the acquisition date to assess the fair value of the loan portfolio. The North Valley Bancorp loan portfolio was segmented into two groups; loans with credit deterioration (PCI loans) and loans without credit deterioration (PNCI). For North Valley Bancorp PNCI loans, the present value of estimated future cash flows, based primarily on contractual cash flows, was used to determine fair value. For North Valley Bancorp PCI loans, the present value of estimated future cash flows, based primarily on liquidation value of collateral, was used to determine fair value. The Company grouped the North Valley Bancorp PNCI loans into pools based on similar loan characteristics such as loan type, payment amortization method, and fixed or variable interest rates. A discounted cash flow schedule was prepared for each pool in which the present value of all estimated future cash flows was calculated using a specifically calculated discount rate for each pool. The discount rate used to estimate the fair value of each loan pool was composed of the sum of: an estimated cost of funds rate, an estimated capital charge reflecting the market participant required return on capital, estimated loan servicing costs, and a liquidity premium. All PNCI loan pools included some estimate regarding prepayment rates, and estimated principal default and loss rates, based primarily on North Valley Bancorp’s historical loss experience. The difference between the sum of recorded balances of the North Valley Bancorp PNCI loans in each pool and the present value of each pool represented the total discount (if the recorded value exceeded the present value) or premium (if the present value exceeded the recorded value) for each pool. The total discount, or premium, for each pool was then allocated to the individual loans within each pool based on outstanding loan balance, individual loan risk rating as compared to the weighted average risk rating of the pool, and the contractual payments remaining for the individual loan as compared to the pool. The Company valued the North Valley Bancorp PCI loans at fair value on an individual basis. A discounted cash flow schedule was prepared for each loan in which the present value of all future estimated cash flows was calculated using a specifically calculated discount rate, estimated liquidation value and estimated liquidation timing for each loan. The discount rate used in the calculation of the present value of North Valley Bancorp PCI loans was composed of the sum of: an estimated cost of funds rate, an estimated capital charge reflecting the market participant required return on capital, estimated loan servicing costs, and a liquidity premium. The difference between the recorded balance and the present value of each North Valley Bancorp PCI loan represented the discount for each PCI loan. All North Valley Bancorp PCI loans had recorded values in excess of their present value of estimated future cash flows. The Company identified the North Valley Bancorp PCI loans as having cash flows that were not reasonably estimable and placed these loans in nonaccrual status under ASC 310-30 and included them in the category of loans the Company refers to as “PCI – other” loans. The following table presents the cost basis, fair value discount, and fair value of loans acquired from North Valley Bancorp on October 3, 2014: North Valley Bancorp Acquired Loans (in thousands) Cost Basis Discount Fair Value PNCI $ 502,637 $ (12,721 ) $ 489,916 PCI – other 11,488 (2,077 ) 9,411 Total $ 514,125 $ (14,798 ) $ 499,327 Although the discount on PNCI loans is completely accretable to interest income over the remaining life of such loans, the discount on PCI – other loans from the North Valley Bancorp acquisition are not accretable into interest income until the loan principal balance has been reduced to the loan’s fair value recorded at acquisition. This method of accounting for the PCI – other loans from the North Valley Bancorp acquisition is often referred to as the “cost recovery” method of income recognition. The following table presents a reconciliation of the undiscounted contractual cash flows, nonaccretable difference, accretable yield, fair value, purchase discount, and principal balance of loans for the PNCI and PCI - other categories of North Valley Bancorp loans as of the acquisition date. For North Valley Bancorp PCI – other loans, the purchase discount does not necessarily represent cash flows to be collected: North Valley Bancorp Loans – October 3, 2014 (in thousands) PNCI PCI - other Total Undiscounted contractual cash flows $ 718,731 $ 15,706 $ 734,437 Undiscounted cash flows not expected to be collected (nonaccretable difference) — (6,295 ) (6,295 ) Undiscounted cash flows expected to be collected 718,731 9,411 728,142 Accretable yield at acquisition (228,815 ) — (228,815 ) Estimated fair value of loans acquired at acquisition 489,916 9,411 499,327 Purchase discount 12,721 2,077 14,798 Principal balance loans acquired $ 502,637 $ 11,488 $ 514,125 As part of the acquisition of North Valley Bancorp, the Company performed a valuation of premises and equipment acquired. This valuation resulted in a $4,785,000 increase in the net book value of land and buildings acquired, and was based on current appraisals of such land and buildings. The Company recognized a core deposit intangible of $6,614,000 related to the acquisition of North Valley Bancorp’s core deposits. The recorded core deposit intangibles represented approximately 0.97% of core deposits for North Valley Bancorp and will be amortized over their useful lives of 7 years. A valuation of time deposits for North Valley Bancorp was also performed as of the acquisition date. Time deposits were split into similar pools based on size, type of time deposits, and maturity. A discounted cash flow analysis was performed on the pools based on current market rates currently paid on similar time deposits. The valuation resulted in no material fair value discount or premium, and none was recorded. The fair value of junior subordinated debentures assumed from North Valley Bancorp was estimated using a discounted cash flow method based on the current market rates for similar liabilities. As a result a discount of $6,664,000 was recorded on the junior subordinated debentures acquired from North Valley Bancorp. The discount on the subordinated debentures will be amortized using the effective yield method the remaining life to maturity of the debentures at acquisition which range from 18 years to 21 years.

Investment Securities

Investment Securities	6 Months Ended
	Jun. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Note 3 - Investment Securities The amortized cost and estimated fair values of investments in debt and equity securities are summarized in the following tables: June 30, 2015 Amortized Gross Gross Estimated (in thousands) Securities Available for Sale Obligations of U.S. government corporations and agencies $ 239,762 $ 3,325 $ (2,535 ) $ 240,552 Obligations of states and political subdivisions 40,467 23 (1,503 ) 38,987 Corporate debt securities 1,898 2 — 1,900 Marketable equity securities 3,000 — (9 ) 2,991 Total securities available for sale $ 285,127 $ 3,350 $ (4,047 ) $ 284,430 Securities Held to Maturity Obligations of U.S. government corporations and agencies $ 760,686 $ 6,966 $ (4,113 ) $ 763,539 Obligations of states and political subdivisions 15,597 5 (444 ) 15,158 Total securities held to maturity $ 776,283 $ 6,971 $ (4,557 ) $ 778,697 December 31, 2014 Amortized Gross Gross Estimated (in thousands) Securities Available for Sale Obligations of U.S. government corporations and agencies $ 71,144 $ 4,001 $ (25 ) $ 75,120 Obligations of states and political subdivisions 3,130 45 — 3,175 Corporate debt securities 1,891 17 — 1,908 Marketable equity securities 3,000 2 — 3,002 Total securities available for sale $ 79,165 $ 4,065 $ (25 ) $ 83,205 Securities Held to Maturity Obligations of U.S. government corporations and agencies $ 660,836 $ 13,055 $ (677 ) $ 673,214 Obligations of states and political subdivisions 15,590 130 (155 ) 15,565 Total securities held to maturity $ 676,426 $ 13,185 $ (832 ) $ 688,779 No investment securities were sold during the six months ended June 30, 2015 or the six months ended June 30, 2014. Investment securities with an aggregate carrying value of $245,800,000 and $143,992,000 at June 30, 2015 and December 31, 2014, 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 June 30, 2015 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 June 30, 2015, obligations of U.S. government corporations and agencies with a cost basis totaling $1,000,448,000 consist almost entirely of 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 June 30, 2015, the Company estimates the average remaining life of these mortgage-backed securities issued by U.S. government corporations and agencies to be approximately 6.0 years. Average remaining life is defined as the time span after which the principal balance has been reduced by half. Investment Securities Available for Sale Held to Maturity (In thousands) Amortized Estimated Amortized Estimated Due in one year $ 1,898 $ 1,900 — — Due after one year through five years 3,621 3,767 — — Due after five years through ten years 28,202 29,476 $ 1,132 $ 1,134 Due after ten years 251,406 249,287 775,151 777,563 Totals $ 285,127 $ 284,430 $ 776,283 $ 778,697 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 (in thousands) June 30, 2015 Securities Available for Sale: Obligations of U.S. government corporations and agencies $ 181,914 $ (2,535 ) — — $ 181,914 $ (2,535 ) Obligations of states and political subdivisions 36,854 (1,503 ) — — 36,854 (1,503 ) Corporate debt securities — — — — — — Marketable equity securities 2,991 (9 ) — — 2,991 (9 ) Total securities available-for-sale $ 221,759 $ (4,047 ) — — $ 221,759 $ (4,047 ) Securities Held to Maturity: Obligations of U.S. government corporations and agencies $ 333,283 $ (4,113 ) — — $ 333,283 $ (4,113 ) Obligations of states and political subdivisions 11,903 (274 ) $ 1,049 $ (170 ) 12,952 (444 ) Corporate debt securities — — — — — — Total securities held-to-maturity $ 345,186 $ (4,387 ) $ 1,049 $ (170 ) $ 346,235 $ (4,557 ) Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized (in thousands) December 31, 2014 Securities Available for Sale: Obligations of U.S. government corporations and agencies $ 6,774 $ (25 ) — — $ 6,774 $ (25 ) Obligations of states and political subdivisions — — — — — — Corporate debt securities — — — — — — Marketable equity securities — — — — — — Total securities available-for-sale $ 6,774 $ (25 ) — — $ 6,774 $ (25 ) Securities Held to Maturity: Obligations of U.S. government corporations and agencies $ 335 $ (1 ) $ 56,288 $ (676 ) $ 56,623 $ (677 ) Obligations of states and political subdivisions 1,600 (26 ) 1,858 (129 ) 3,458 (155 ) Corporate debt securities — — — — — — Total securities held-to-maturity $ 1,935 $ (27 ) $ 58,146 $ (805 ) $ 60,081 $ (832 ) Obligations of U.S. government corporations and 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 June 30, 2015, 36 debt securities representing obligations of U.S. government corporations and agencies had unrealized losses with aggregate depreciation of (1.27%) 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 June 30, 2015, 48 debt securities representing obligations of states and political subdivisions had unrealized losses with aggregate depreciation of (3.76%) from the Company’s amortized cost basis. Corporate debt securities: At June 30, 2015, no corporate debt securities had unrealized losses. Marketable equity securities: At June 30, 2015, there was one marketable equity security that had an unrealized loss with aggregate depreciation of (0.30%) from the Company’s amortized cost basis.

Loans

Loans	6 Months Ended
	Jun. 30, 2015
Receivables [Abstract]
Loans	Note 4 – Loans A summary of loan balances follows (in thousands): June 30, 2015 Originated PNCI PCI - PCI - Total Mortgage loans on real estate: Residential 1-4 family $ 173,623 $ 113,991 — $ 3,874 $ 291,488 Commercial 1,019,050 348,508 — 27,521 1,395,079 Total mortgage loan on real estate 1,192,673 462,499 — 31,395 1,686,567 Consumer: Home equity lines of credit 301,696 34,227 5,269 2,923 344,115 Home equity loans 29,223 4,587 125 637 34,572 Auto Indirect — — — — — Other 29,057 3,977 — 67 33,101 Total consumer loans 359,976 42,791 5,394 3,627 411,788 Commercial 157,283 33,407 4 5,097 195,791 Construction: Residential 26,283 14,952 — 723 41,958 Commercial 43,526 14,132 — — 57,658 Total construction 69,809 29,084 — 723 99,616 Total loans, net of deferred loan fees and discounts $ 1,779,741 $ 567,781 $ 5,398 $ 40,842 $ 2,393,762 Total principal balance of loans owed, net of charge-offs $ 1,784,505 $ 583,746 $ 13,865 $ 47,806 $ 2,429,922 Unamortized net deferred loan fees (4,764 ) — — — (4,764 ) Discounts to principal balance of loans owed, net of charge-offs — (15,965 ) (8,467 ) (6,964 ) (31,396 ) Total loans, net of unamortized deferred loan fees and discounts $ 1,779,741 $ 567,781 $ 5,398 $ 40,842 $ 2,393,762 Noncovered loans $ 1,779,741 $ 567,781 $ 5,398 $ 35,324 $ 2,388,244 Covered loans — — — 5,518 5,518 Total loans, net of unamortized deferred loan fees and discounts $ 1,779,741 $ 567,781 $ 5,398 $ 40,842 $ 2,393,762 Allowance for loan losses $ 29,470 $ 2,763 $ 312 $ 2,910 $ 35,455 A summary of loan balances follows (in thousands): December 31, 2014 Originated PNCI PCI - PCI - Total Mortgage loans on real estate: Residential 1-4 family $ 154,594 $ 120,821 — $ 4,005 $ 279,420 Commercial 928,797 376,225 — 30,917 1,335,939 Total mortgage loan on real estate 1,083,391 497,046 — 34,922 1,615,359 Consumer: Home equity lines of credit 305,166 38,397 $ 5,478 3,543 352,584 Home equity loans 23,559 6,985 125 645 31,314 Auto Indirect 112 — — — 112 Other 28,230 4,770 — 74 33,074 Total consumer loans 357,067 50,152 5,603 4,262 417,084 Commercial 126,611 40,899 8 7,427 174,945 Construction: Residential 21,135 16,808 — 675 38,618 Commercial 24,545 11,973 — — 36,518 Total construction 45,680 28,781 — 675 75,136 Total loans, net of deferred loan fees and discounts $ 1,612,749 $ 616,878 $ 5,611 $ 47,286 $ 2,282,524 Total principal balance of loans owed, net of charge-offs $ 1,617,542 $ 634,490 $ 14,805 $ 56,016 $ 2,322,853 Unamortized net deferred loan fees (4,793 ) — — — (4,793 ) Discounts to principal balance of loans owed, net of charge-offs — (17,612 ) (9,194 ) (8,730 ) (35,536 ) Total loans, net of unamortized deferred loan fees and discounts $ 1,612,749 $ 616,878 $ 5,611 $ 47,286 $ 2,282,524 Noncovered loans $ 1,612,749 $ 616,878 $ 5,611 $ 25,018 $ 2,260,256 Covered loans — — — 22,268 22,268 Total loans, net of unamortized deferred loan fees and discounts $ 1,612,749 $ 616,878 $ 5,611 $ 47,286 $ 2,282,524 Allowance for loan losses $ (29,860 ) $ (3,296 ) $ (348 ) $ (3,081 ) $ (36,585 ) The following is a summary of the change in accretable yield for PCI – other loans during the periods indicated (in thousands): Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 Change in accretable yield: Balance at beginning of period $ 13,402 $ 17,438 $ 14,159 $ 18,232 Accretion to interest income (1,375 ) (1,382 ) (2,930 ) (3,013 ) Reclassification from nonaccretable difference 920 242 1,718 1,079 Balance at end of period $ 12,947 $ 16,298 $ 12,947 $ 16,298

Allowance for Loan Losses

Allowance for Loan Losses	6 Months Ended
	Jun. 30, 2015
Receivables [Abstract]
Allowance for Loan Losses	Note 5 – Allowance for Loan Losses The following tables summarize the activity in the allowance for loan losses, and ending balance of loans, net of unearned fees for the periods indicated. Allowance for Loan Losses – Three Months Ended June 30, 2015 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Beginning balance $ 2,765 $ 10,451 $ 15,233 $ 1,980 $ 6 $ 644 $ 3,976 $ 750 $ 250 $ 36,055 Charge-offs (128 ) — (84 ) (117 ) (4 ) (176 ) (5 ) — — (514 ) Recoveries — 53 230 6 16 107 121 — 14 547 (Benefit) provision 198 (363 ) (1,386 ) 259 (18 ) 130 310 92 145 (633 ) Ending balance $ 2,835 $ 10,141 $ 13,993 $ 2,128 — $ 705 $ 4,402 $ 842 $ 409 $ 35,455 Allowance for Loan Losses – Six Months Ended June 30, 2015 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Beginning balance $ 3,086 $ 9,227 $ 15,676 $ 1,797 $ 9 $ 719 $ 4,226 $ 1,434 $ 411 $ 36,585 Charge-offs (209 ) — (425 ) (128 ) (4 ) (444 ) (539 ) — — (1,749 ) Recoveries 1 149 349 9 36 259 208 11 33 1,055 (Benefit) provision (43 ) 765 (1,607 ) 450 (41 ) 171 507 (603 ) (35 ) (436 ) Ending balance $ 2,835 $ 10,141 $ 13,993 $ 2,128 — $ 705 $ 4,402 $ 842 $ 409 $ 35,455 Ending balance: Individ. evaluated for impairment $ 857 $ 418 $ 1,779 $ 387 — $ 128 $ 676 — — $ 4,245 Loans pooled for evaluation $ 1,884 $ 8,390 $ 11,798 $ 1,741 — $ 577 $ 2,536 $ 653 $ 409 $ 27,988 Loans acquired with deteriorated credit quality $ 94 $ 1,333 $ 416 — — — $ 1,190 $ 189 — $ 3,222 Loans, net of unearned fees – As of June 30, 2015 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Ending balance: Total loans $ 291,488 $ 1,395,079 $ 344,115 $ 34,572 — $ 33,101 $ 195,791 $ 41,958 $ 57,658 $ 2,393,762 Individ. evaluated for impairment $ 7,467 $ 47,118 $ 6,135 $ 1,438 — $ 403 $ 2,048 $ 328 $ 88 $ 65,025 Loans pooled for evaluation $ 280,147 $ 1,320,440 $ 329,788 $ 32,372 — $ 32,631 $ 188,642 $ 40,907 $ 57,570 $ 2,282,497 Loans acquired with deteriorated credit quality $ 3,874 $ 27,521 $ 8,192 $ 762 — $ 67 $ 5,101 $ 723 — $ 46,240 Allowance for Loan Losses – Year Ended December 31, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Beginning balance $ 3,154 $ 9,700 $ 16,375 $ 1,208 $ 66 $ 589 $ 4,331 $ 1,559 $ 1,263 $ 38,245 Charge-offs (171 ) (110 ) (1,094 ) (29 ) (3 ) (599 ) (479 ) (4 ) (69 ) (2,558 ) Recoveries 2 540 960 34 86 495 1,268 1,377 181 4,943 (Benefit) provision 101 (903 ) (565 ) 584 (140 ) 234 (894 ) (1,498 ) (964 ) (4,045 ) Ending balance $ 3,086 $ 9,227 $ 15,676 $ 1,797 $ 9 $ 719 $ 4,226 $ 1,434 $ 411 $ 36,585 Ending balance: Individ. evaluated for impairment $ 974 $ 410 $ 1,974 $ 284 — $ 142 $ 423 $ 60 — $ 4,267 Loans pooled for evaluation $ 1,915 $ 8,408 $ 13,251 $ 1,513 $ 9 $ 572 $ 2,569 $ 332 $ 322 $ 28,891 Loans acquired with deteriorated credit quality $ 197 $ 409 $ 451 — — $ 5 $ 1,234 $ 1,042 $ 89 $ 3,427 Loans, net of unearned fees – As of December 31, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Ending balance: Total loans $ 279,420 $ 1,335,939 $ 352,584 $ 31,314 $ 112 $ 33,074 $ 174,945 $ 38,618 $ 35,518 $ 2,282,524 Individ. evaluated for impairment $ 7,188 $ 41,932 $ 6,968 $ 1,278 $ 18 $ 323 $ 1,757 $ 2,683 $ 99 $ 62,246 Loans pooled for evaluation $ 268,227 $ 1,263,090 $ 336,595 $ 29,266 $ 94 $ 32,677 $ 165,753 $ 35,260 $ 36,419 $ 2,167,381 Loans acquired with deteriorated credit quality $ 4,005 $ 30,917 $ 9,021 $ 770 — $ 74 $ 7,435 $ 675 — $ 52,897 Allowance for Loan Losses – Three Months Ended June 30, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Beginning balance $ 2,980 $ 9,875 $ 16,366 $ 1,291 $ 45 $ 590 $ 4,136 $ 1,501 $ 1,538 $ 38,322 Charge-offs (1 ) (45 ) (677 ) (11 ) — (144 ) (151 ) — — (1,029 ) Recoveries — 299 180 25 39 119 188 97 20 967 (Benefit) provision (147 ) (298 ) 2,186 106 (56 ) (9 ) 234 (87 ) (221 ) 1,708 Ending balance $ 2,832 $ 9,831 $ 18,055 $ 1,411 $ 28 $ 556 $ 4,407 $ 1,511 $ 1,337 $ 39,968 Allowance for Loan Losses – Six Months Ended June 30, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Beginning balance $ 3,154 $ 9,700 $ 16,375 $ 1,208 $ 66 $ 589 $ 4,331 $ 1,559 $ 1,263 $ 38,245 Charge-offs (136 ) (58 ) (855 ) (11 ) — (271 ) (390 ) (4 ) (69 ) (1,794 ) Recoveries — 471 509 27 51 302 1,061 608 135 3,164 (Benefit) provision (186 ) (282 ) 2,026 187 (89 ) (64 ) (595 ) (652 ) 8 353 Ending balance $ 2,832 $ 9,831 $ 18,055 $ 1,411 $ 28 $ 556 $ 4,407 $ 1,511 $ 1,337 $ 39,968 Ending balance: Individ. evaluated for impairment $ 780 $ 392 $ 2,088 $ 211 — $ 3 $ 405 $ 61 — $ 3,940 Loans pooled for evaluation $ 1,869 $ 8,605 $ 15,466 $ 1,199 $ 27 $ 553 $ 2,534 $ 720 $ 779 $ 31,752 Loans acquired with deteriorated credit quality $ 185 $ 835 $ 499 — — — $ 1,469 $ 730 $ 558 $ 4,276 Loans, net of unearned fees – As of June 30, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Ending balance: Total loans $ 212,920 $ 954,936 $ 330,187 $ 17,895 $ 385 $ 28,676 $ 137,341 $ 42,097 $ 14,149 $ 1,738,586 Individ. evaluated for impairment $ 7,397 $ 52,570 $ 6,987 $ 871 $ 40 $ 77 $ 2,159 $ 2,751 $ 16 $ 72,868 Loans pooled for evaluation $ 201,680 $ 872,399 $ 313,843 $ 16,412 $ 345 $ 28,529 $ 129,207 $ 37,844 $ 14,068 $ 1,614,327 Loans acquired with deteriorated credit quality $ 3,843 $ 29,967 $ 9,357 $ 612 — $ 70 $ 5,975 $ 1,502 $ 65 $ 51,391 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 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 • Special Mention • Substandard • Doubtful • Loss The following tables present ending loan balances by loan category and risk grade for the periods indicated: Credit Quality Indicators – As of June 30, 2015 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Originated loans: Pass $ 165,857 $ 977,037 $ 290,529 $ 26,015 — $ 28,341 $ 155,985 $ 25,575 $ 42,852 $ 1,712,191 Special mention 1,311 10,479 3,046 1,160 — 461 854 661 585 18,557 Substandard 6,455 31,534 8,121 2,048 — 255 444 47 89 48,993 Total originated $ 173,623 $ 1,019,050 $ 301,696 $ 29,223 — $ 29,057 $ 157,283 $ 26,283 $ 43,526 $ 1,779,741 PNCI loans: Pass $ 112,680 $ 327,833 $ 32,392 $ 4,344 — $ 3,670 $ 32,100 $ 14,952 $ 14,132 $ 542,103 Special mention 346 13,337 452 101 — 88 — — — 14,324 Substandard 965 7,338 1,383 142 — 219 1,307 — — 11,354 Total PNCI $ 113,991 $ 348,508 $ 34,227 $ 4,587 — $ 3,977 33,407 $ 14,952 $ 14,132 $ 567,781 PCI loans $ 3,874 $ 27,521 $ 8,192 $ 762 — $ 67 $ 5,101 $ 723 — $ 46,240 Total loans $ 291,488 $ 1,395,079 $ 344,115 $ 34,572 — $ 33,101 $ 195,791 $ 41,958 $ 57,658 $ 2,393,762 Credit Quality Indicators – As of December 31, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Originated loans: Pass $ 146,949 $ 883,102 $ 292,244 $ 20,976 $ 66 $ 27,396 $ 124,707 $ 18,112 $ 24,436 $ 1,537,988 Special mention 1,122 11,521 3,590 743 11 591 636 622 — 18,836 Substandard 6,523 34,174 9,332 1,840 35 243 1,268 2,401 109 55,925 Total originated $ 154,594 $ 928,797 $ 305,166 $ 23,559 $ 112 $ 28,230 $ 126,611 $ 21,135 $ 24,545 $ 1,612,749 PNCI loans: Pass $ 119,643 $ 359,537 $ 36,531 $ 6,813 — $ 4,399 $ 40,628 $ 16,808 $ 11,973 $ 596,332 Special mention 547 12,979 936 147 — 230 268 — — 15,107 Substandard 631 3,709 930 25 — 141 3 — — 5,439 Total PNCI $ 120,821 $ 376,225 $ 38,397 $ 6,985 — $ 4,770 $ 40,899 $ 16,808 $ 11,973 $ 616,878 PCI loans $ 4,005 $ 30,917 $ 9,021 $ 770 — $ 74 $ 7,435 $ 675 — $ 52,897 Total loans $ 279,420 $ 1,335,939 $ 352,584 $ 31,314 $ 112 $ 33,074 $ 174,945 $ 38,618 $ 36,518 $ 2,282,524 Consumer loans, whether unsecured or secured by real estate, automobiles, or other personal property, 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. 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 the two. Problem consumer loans are generally identified by payment history of the borrower (delinquency). The Bank manages its consumer loan portfolios by monitoring delinquency and contacting borrowers to encourage repayment, suggest modifications if appropriate, and, when continued scheduled payments become unrealistic, initiate repossession or foreclosure through appropriate channels. 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. Commercial real estate loans generally fall into two categories, owner-occupied and non-owner occupied. Loans secured by owner occupied real estate are primarily susceptible to changes in the business conditions of the related business. This may be driven by, among other things, industry changes, geographic business changes, changes in the individual fortunes of the business owner, and general economic conditions and changes in business cycles. These same risks apply to commercial loans whether secured by equipment or other personal property or unsecured. Losses on loans secured by owner occupied real estate, equipment, or other personal property generally are dictated by the value of underlying collateral at the time of default and liquidation of the collateral. 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 by more general economic conditions, underlying collateral generally has devalued more and results in larger losses due to default. Loans secured by non-owner occupied real estate are primarily susceptible to risks associated with swings in occupancy or vacancy and related shifts in lease rates, rental rates or room rates. Most often these shifts are a result of changes in general economic or market conditions or overbuilding and resultant over-supply. Losses are dependent on value of underlying collateral at the time of default. Values are generally driven by these same factors and influenced by interest rates and required rates of return as well as changes in occupancy costs. Construction loans, whether owner occupied or non-owner occupied commercial real estate loans or residential development loans, are not only susceptible to the related risks described above but the added risks of construction itself including cost over-runs, mismanagement of the project, or lack of demand or market changes experienced at time of completion. Again, losses are primarily related to underlying collateral value and changes therein as described above. Problem C&I loans are generally identified by periodic review of financial information which may include financial statements, tax returns, rent rolls and payment history of the borrower (delinquency). Based on this information the Bank may decide to take any of several courses of action including demand for repayment, additional collateral or guarantors, and, when repayment becomes unlikely through borrower’s income and cash flow, repossession or foreclosure of the underlying collateral. 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. 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, past due, and nonaccrual originated loans by loan category as of the date indicated: Analysis of Past Due and Nonaccrual Originated Loans – As of June 30, 2015 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Originated loan balance: Past due: 30-59 Days $ 256 $ 589 $ 867 $ 514 — $ 44 $ 589 $ 407 — $ 3,266 60-89 Days 375 2,874 488 166 — 2 — — — 3,905 > 90 Days 653 711 466 348 — 57 76 14 — 2,325 Total past due $ 1,284 $ 4,174 $ 1,821 $ 1,028 — $ 103 $ 665 $ 421 — $ 9,496 Current 172,339 1,014,876 299,875 28,195 — 28,954 156,618 25,862 $ 43,526 1,770,245 Total orig. loans $ 173,623 $ 1,019,050 $ 301,696 $ 29,223 — $ 29,057 $ 157,283 $ 26,283 $ 43,526 $ 1,779,741 > 90 Days and still accruing — — — — — — — — — — Nonaccrual loans $ 3,914 $ 14,957 $ 3,246 $ 1,262 — $ 60 $ 238 $ 47 $ 88 $ 23,812 The following table shows the ending balance of current, past due, and nonaccrual PNCI loans by loan category as of the date indicated: Analysis of Past Due and Nonaccrual PNCI Loans – As of June 30, 2015 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total PNCI loan balance: Past due: 30-59 Days — $ 883 — $ 42 — $ 9 — — — $ 934 60-89 Days — — $ 271 — — 92 — — — 363 > 90 Days $ 33 466 260 — — 98 — — — 857 Total past due $ 33 $ 1,349 $ 531 $ 42 — $ 199 — — — $ 2,154 Current 113,958 347,159 33,696 4,545 — 3,778 $ 33,407 $ 14,952 $ 14,132 565,627 Total PNCI loans $ 113,991 $ 348,508 $ 34,227 $ 4,587 — $ 3,977 $ 33,407 $ 14,952 $ 14,132 $ 567,781 > 90 Days and still accruing — — — — — — — — — — Nonaccrual loans $ 622 $ 4,316 $ 733 $ 61 — $ 131 — — — $ 5,863 The following table shows the ending balance of current, past due, and nonaccrual originated loans by loan category as of the date indicated: Analysis of Past Due and Nonaccrual Originated Loans – As of December 31, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Originated loan balance: Past due: 30-59 Days $ 1,296 $ 735 $ 2,066 $ 615 $ 4 $ 64 $ 739 — — $ 5,519 60-89 Days 919 — 296 192 — 24 99 — — 1,530 > 90 Days 100 900 754 202 17 46 61 — — 2,080 Total past due $ 2,315 $ 1,635 $ 3,116 $ 1,009 $ 21 $ 134 $ 899 — — $ 9,129 Current 152,279 927,162 302,050 22,550 91 28,096 125,712 $ 21,135 $ 24,545 1,603,620 Total orig. loans $ 154,594 $ 928,797 $ 305,166 $ 23,559 $ 112 $ 28,230 $ 126,611 $ 21,135 $ 24,545 $ 1,612,749 > 90 Days and still accruing — — — — — — — — — — Nonaccrual loans $ 3,430 $ 20,736 $ 4,336 $ 1,197 $ 18 $ 66 $ 246 $ 2,401 $ 99 $ 32,529 The following table shows the ending balance of current, past due, and nonaccrual PNCI loans by loan category as of the date indicated: Analysis of Past Due and Nonaccrual PNCI Loans – As of December 31, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total PNCI loan balance: Past due: 30-59 Days $ 2,041 $ 260 $ 275 — — $ 25 $ 67 — — $ 2,668 60-89 Days 24 — 118 — — 3 — — — 145 > 90 Days 239 — 73 $ 25 — 76 — — — 413 Total past due $ 2,304 $ 260 $ 466 $ 25 — $ 104 $ 67 — — $ 3,226 Current 118,517 375,965 37,931 6,960 — 4,666 40,832 $ 16,808 $ 11,973 613,652 Total PNCI loans $ 120,821 $ 376,225 $ 38,397 $ 6,985 — $ 4,770 $ 40,899 $ 16,808 $ 11,973 $ 616,878 > 90 Days and still accruing — — — — — — — — — — Nonaccrual loans $ 799 $ 366 $ 346 $ 25 — $ 110 — — — $ 1,646 Impaired originated loans are those where management has concluded that it is probable that the borrower will be unable to pay all amounts due under the contractual terms. The following tables show the recorded investment (financial statement balance), unpaid principal balance, average recorded investment, and interest income recognized for impaired Originated and PNCI loans, segregated by those with no related allowance recorded and those with an allowance recorded for the periods indicated. Impaired Originated Loans – As of, or for the Six Months Ended, June 30, 2015 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total With no related allowance recorded: Recorded investment $ 3,770 $ 40,294 $ 2,475 $ 779 — $ 23 $ 338 $ 328 $ 88 $ 48,095 Unpaid principal $ 5,901 $ 44,441 $ 5,340 $ 1,256 — $ 46 $ 366 $ 376 $ 183 $ 57,909 Average recorded Investment $ 3,528 $ 39,385 2,738 $ 764 — $ 31 $ 375 $ 1,364 $ 94 $ 48,279 Interest income Recognized $ 19 $ 795 $ 2 — — — $ 11 $ 9 — $ 836 With an allowance recorded: Recorded investment $ 2,780 $ 2,365 $ 2,513 $ 598 — $ 37 $ 1,706 — — $ 9,999 Unpaid principal $ 2,958 $ 2,448 $ 2,973 $ 704 — $ 47 $ 1,808 — — $ 10,938 Related allowance $ 784 $ 216 $ 1,481 $ 346 — $ 15 $ 676 — — $ 3,518 Average recorded Investment $ 2,752 $ 2,654 $ 2,849 $ 551 — $ 41 $ 1,522 $ 141 — $ 10,510 Interest income Recognized $ 40 $ 56 $ 25 $ 3 — — $ 42 — — $ 166 Impaired PNCI Loans – As of, or for the Six Months Ended, June 30, 2015 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total With no related allowance recorded: Recorded investment $ 290 $ 3,633 $ 637 $ 20 — $ 42 $ 4 — — $ 4,626 Unpaid principal $ 316 $ 3,713 $ 696 $ 22 — $ 62 $ 4 — — $ 4,813 Average recorded Investment $ 317 $ 1,999 $ 492 $ 22 — $ 40 $ 5 — — $ 2,875 Interest income Recognized $ 3 $ 74 $ 1 — — — — — — $ 78 With an allowance recorded: Recorded investment $ 627 $ 826 $ 511 $ 41 — $ 301 — — — $ 2,306 Unpaid principal $ 643 $ 836 $ 512 $ 42 — $ 301 — — — $ 2,334 Related allowance $ 72 $ 203 $ 298 $ 41 — $ 113 — — — $ 727 Average recorded Investment $ 731 $ 486 $ 474 $ 20 — $ 261 — — — $ 1,972 Interest income Recognized $ 4 $ 12 $ 9 — — $ 6 — — — $ 31 Impaired Originated Loans – As of December 31, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total With no related allowance recorded: Recorded investment $ 3,287 $ 38,477 $ 3,001 $ 750 $ 14 $ 25 $ 412 $ 2,401 $ 99 $ 48,466 Unpaid principal $ 5,138 $ 41,949 $ 6,094 $ 1,187 $ 49 $ 32 $ 433 $ 6,588 $ 190 $ 61,660 Average recorded Investment $ 3,826 $ 45,915 $ 3,355 $ 651 $ 35 $ 21 $ 1,030 $ 2,437 $ 84 $ 57,354 Interest income Recognized $ 38 $ 995 $ 26 $ 6 — $ 1 $ 26 — $ 3 $ 1,095 With an allowance recorded: Recorded investment $ 2,724 $ 2,943 $ 3,185 $ 504 $ 4 $ 41 $ 1,338 $ 282 — $ 11,021 Unpaid principal $ 2,865 $ 3,101 $ 3,533 $ 597 $ 6 $ 41 $ 1,438 $ 282 — $ 11,863 Related allowance $ 797 $ 302 $ 1,769 $ 284 — $ 11 $ 423 $ 60 — $ 3,646 Average recorded Investment $ 2,677 $ 4,119 $ 2,982 $ 365 $ 4 $ 25 $ 1,428 $ 283 $ 55 $ 11,938 Interest income Recognized $ 91 $ 144 $ 71 $ 13 — — $ 71 $ 19 — $ 409 Impaired PNCI Loans – As of December 31, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total With no related allowance recorded: Recorded investment $ 343 $ 366 $ 346 $ 25 — $ 37 $ 7 — — $ 1,124 Unpaid principal $ 353 $ 2,620 $ 374 $ 25 — $ 54 $ 7 — — $ 3,433 Average recorded Investment $ 246 $ 753 $ 287 $ 12 — $ 36 $ 10 — — $ 1,344 Interest income Recognized $ 14 — $ (1 ) — — — $ 1 — — $ 14 With an allowance recorded: Recorded investment $ 834 $ 146 $ 436 — — $ 220 — — — $ 1,636 Unpaid principal $ 852 $ 146 $ 436 — — $ 220 — — — $ 1,654 Related allowance $ 177 $ 108 $ 205 — — $ 131 — — — $ 621 Average recorded Investment $ 516 $ 148 $ 319 — — $ 124 — — — $ 1,107 Interest income Recognized $ 8 $ 8 $ 20 — — $ 12 — — — $ 48 Impaired Originated Loans – As of, or for the Six Months Ended, June 30, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total With no related allowance recorded: Recorded investment $ 4,002 $ 48,781 $ 2,641 $ 626 $ 33 $ 16 $ 1,151 $ 2,468 $ 16 $ 59,734 Unpaid principal $ 6,227 $ 51,862 $ 5,592 $ 1,032 $ 70 $ 22 $ 1,174 $ 6,689 $ 99 $ 72,767 Average recorded Investment $ 4,228 $ 54,387 $ 3,419 $ 540 $ 49 $ 21 $ 1,266 $ 1,904 $ 43 $ 65,857 Interest income Recognized $ 23 $ 651 $ 5 $ 1 — — $ 31 — — $ 711 With an allowance recorded: Recorded investment $ 2,821 $ 3,163 $ 3,559 $ 245 $ 7 — $ 998 $ 283 — $ 11,076 Unpaid principal $ 2,893 $ 3,324 $ 4,231 $ 325 $ 10 — $ 1,041 $ 283 — $ 12,107 Related allowance $ 625 $ 282 $ 1,810 $ 211 — — $ 405 $ 61 — $ 3,394 Average recorded Investment $ 2,594 $ 5,012 $ 3,196 $ 204 $ 5 $ 6 $ 1,524 $ 890 $ 73 $ 13,504 Interest income Recognized $ 34 $ 76 $ 35 $ 2 — — $ 25 $ 9 — $ 181 Impaired PNCI Loans – As of, or for the Six Months Ended, June 30, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total With no related allowance recorded: Recorded investment $ 144 $ 478 $ 320 — — $ 33 $ 10 — — $ 985 Unpaid principal $ 144 $ 2,648 $ 337 — — $ 44 $ 10 — — $ 3,183 Average recorded Investment $ 94 $ 822 $ 291 — — $ 35 $ 12 — — $ 1,254 Interest income Recognized $ 6 — $ (1 ) — — — — — — $ 5 With an allowance recorded: Recorded investment $ 430 $ 148 $ 467 — — $ 28 — — — $ 1,073 Unpaid principal $ 442 $ 148 $ 476 — — $ 28 — — — $ 1,094 Related allowance $ 155 $ 110 $ 278 — — $ 3 — — — $ 546 Average recorded Investment $ 352 $ 153 $ 260 — — $ 28 — — — $ 793 Interest income Recognized $ 4 $ 4 $ 8 — — $ 1 — — — $ 17 At June 30, 2015, $43,047,000 of originated loans were TDR and classified as impaired. The Company had obligations to lend $62,000 of additional funds on these TDR as of June 30, 2015. At June 30, 2015, $1,091,000 of PNCI loans were TDR and classified as impaired. The Company had no obligations to lend additional funds on these TDR as of June 30, 2015. At December 31, 2014, $45,676,000 of Originated loans were TDRs and classified as impaired. The Company had obligations to lend $54,000 of additional funds on these TDRs as of December 31, 2014. At December 31, 2014, $1,307,000 of PNCI loans were TDRs and classified as impaired. The Company had no obligations to lend additional funds on these TDRs as of December 31, 2014. At June 30, 2014, $53,476,000 of originated loans were TDRs and classified as impaired. The Company had no obligations to lend additional funds on these TDRs as of June 30, 2014. At June 30, 2014, $1,227,000 of PNCI loans were TDRs and classified as impaired. The Company had no obligations to lend additional funds on these TDRs as of June 30, 2014. Modifications classified as TDRs can include one or a combination of the following: rate modifications, term extensions, interest only modifications, either temporary or long-term, payment modifications, and collateral substitutions/additions. For all new TDRs, an impairment analysis is conducted. If the loan is determined to be collateral dependent, any additional amount of impairment will be calculated based on the difference between estimated collectible value and the current carrying balance of the loan. This difference could result in an increased provision and is typically charged off. If the asset is determined not to be collateral dependent, the impairment is measured on the net present value difference between the expected cash flows of the restructured loan and the cash flows which would have been received under the original terms. The effect of this could result in a requirement for additional provision to the reserve. The effect of these required provisions for the period are indicated above. Typically if a TDR defaults during the period, the loan is then considered collateral dependent and, if it was not already considered collateral dependent, an appropriate provision will be reserved or charge will be taken. The additional provisions required resulting from default of previously modified TDR’s are noted above. The following table shows certain information regarding Troubled Debt Restructurings (TDRs) that occurred during the period indicated: TDR Information for the Three Months Ended June 30, 2015 RE Mortgage Home Equity Auto Other Construction ($ in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Number — — — 1 — — 2 — — 3 Pre-mod outstanding principal balance — — — $ 69 — — $ 182 — — $ 251 Post-mod outstanding principal balance — — — $ 73 — — $ 182 — — $ 255 Financial impact due to TDR taken as additional provision — — — — — — $ 86 — — $ 86 Number that defaulted during the period 1 1 — — — — — — — 2 Recorded investment of TDRs that defaulted during the period $ 98 $ 37 — — — — — — — $ 135 Financial impact due to the default of previous TDR taken as charge-offs or additional provisions — — — — — — — — — — The following tables show certain information regarding TDRs that occurred during the periods indicated: TDR Information for the Six Months Ended June 30, 2015 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Number 1 1 — 1 — 2 3 — — 8 Pre-mod outstanding principal balance $ 108 $ 124 — $ 69 — $ 89 $ 468 — — $ 858 Post-mod outstanding principal balance $ 110 $ 124 — $ 74 — $ 89 $ 470 — — $ 867 Financial impact due to TDR taken as additional provision $ 8 $ (5 ) — — — $ 5 $ 249 — — $ 257 Number that defaulted during the period 1 1 1 — — — — — — 3 Recorded investment of TDRs that defaulted during the period $ 98 $ 37 $ 46 — — — — — — $ 181 Financial impact due to the default of previous TDR taken as charge-offs or additional provisions — — — — — — — — — — TDR Information for the Three Months Ended June 30, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Number 1 2 1 1 — — 2 — — 7 Pre-mod outstanding principal balance $ 112 $ 568 $ 200 $ 32 — — $ 34 — — $ 946 Post-mod outstanding principal balance $ 112 $ 571 $ 212 $ 33 — — $ 34 — — $ 962 Financial impact due to TDR taken as additional provision — $ 8 — — — — $ 4 — — $ 12 Number that defaulted during the period 1 1 — — — — — — — 2 Recorded investment of TDRs that defaulted during the period $ 152 $ 163 — — — — — — — $ 315 Financial impact due to the default of previous TDR taken as charge-offs or additional provisions — — — — — — — — — — TDR Information for the Six Months Ended June 30, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Number 3 4 3 1 — — 3 1 1 16 Pre-mod outstanding principal balance $ 806 $ 824 $ 479 $ 32 — — $ 72 $ 102 $ 118 $ 2,433 Post-mod outstanding principal balance $ 806 $ 830 $ 491 $ 33 — — $ 72 $ 85 $ 100 $ 2,417 Financial impact due to TDR taken as additional provision $ 37 $ 18 — — — — $ 21 — — $ 76 Number that defaulted during the period 1 2 — — — — 1 — — 4 Recorded investment of TDRs that defaulted during the period $ 152 $ 423 — — — — $ 116 — — $ 691 Financial impact due to the default of previous TDR taken as charge-offs or additional provisions

Foreclosed Assets

Foreclosed Assets	6 Months Ended
	Jun. 30, 2015
Text Block [Abstract]
Foreclosed Assets	Note 6 – Foreclosed Assets A summary of the activity in the balance of foreclosed assets follows ($ in thousands): Six months ended June 30, 2015 Six months ended June 30, 2014 Noncovered Covered Total Noncovered Covered Total Beginning balance, net $ 4,449 $ 445 $ 4,894 $ 5,588 $ 674 $ 6,262 Additions/transfers from loans and covered 2,605 (445 ) 2,160 4,578 — 4,578 Dispositions/sales (1,420 ) — (1,420 ) (4,873 ) (142 ) (5,015 ) Valuation adjustments (241 ) — (241 ) (29 ) (11 ) (40 ) Ending balance, net $ 5,393 $ 0 $ 5,393 $ 5,264 $ 521 $ 5,785 Ending valuation allowance $ (438 ) $ 0 $ (438 ) $ (76 ) $ (11 ) $ (87 ) Ending number of foreclosed assets 33 — 33 23 2 25 Proceeds from sale of foreclosed assets $ 1,033 $ 0 $ 1,033 $ 6,315 $ 168 $ 6,483 Gain on sale of foreclosed assets $ 426 $ 0 $ 426 $ 1,442 $ 26 $ 1,468 As of June 30, 2015, $2,059,000 of foreclosed residential real estate properties are included in foreclosed assets, all of which the Company has obtained physical possession. During the three months ended June 30, 2015, $445,000 of covered foreclosed assets were transferred to noncovered foreclosed assets as the indemnification portion of the agreement covering those foreclosed asset expired during May 2015. Included in the sales of foreclosed assets during the six months ended June 30, 2015 is the sale of one foreclosed asset during the three months ended June 30, 2015 with a cost basis of $813,000. The Company provided loans to the buyer of this foreclosed asset such that, in accordance with generally accepted accounting principles, the Company deferred the entire gain of $397,000 related to this foreclosed asset sale. This deferred gain will be recognized over time in proportion to the reduction in principal balance of the related loans until the buyer has reduced the outstanding principal balance of the loans to a level specified by generally accepted accounting principles at which time the remaining unrecognized gain may be recognized.

Premises and Equipment

Premises and Equipment	6 Months Ended
	Jun. 30, 2015
Property, Plant and Equipment [Abstract]
Premises and Equipment	Note 7 - Premises and Equipment Premises and equipment were comprised of: June 30, December 31, ($ in thousands) Land & land improvements $ 8,883 $ 8,933 Buildings 39,090 39,638 Furniture and equipment 28,620 28,446 76,593 77,017 Less: Accumulated depreciation (34,559 ) (33,570 ) 42,034 43,447 Construction in progress 22 46 Total premises and equipment $ 42,056 $ 43,493 Depreciation expense for premises and equipment amounted to $1,377,000 and $984,000 for the three months ended June 30, 2015 and 2014, respectively, and $2,645,000 and $2,165,000 for the six months ended June 30, 2015 and 2014, respectively.

Cash Value of Life Insurance

Cash Value of Life Insurance	6 Months Ended
	Jun. 30, 2015
Investments, All Other Investments [Abstract]
Cash Value of Life Insurance	Note 8 – Cash Value of Life Insurance A summary of the activity in the balance of cash value of life insurance follows (in thousands): Six months ended June 30, 2015 2014 Beginning balance $ 92,337 $ 52,309 Increase in cash value of life insurance 1,350 797 Ending balance $ 93,687 $ 53,106 End of period death benefit $ 165,728 $ 94,999 Number of policies owned 189 133 Insurance companies used 14 6 Current and former employees and directors covered 60 36 As of June 30, 2015, the Bank was the owner and beneficiary of 189 life insurance policies, issued by 14 life insurance companies, covering 60 current and former employees and directors. These life insurance policies are recorded on the Company’s financial statements at their reported cash (surrender) values. 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 noninterest 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 for certain of the policies 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. See Note 15 of these condensed consolidated financial statements for additional information on JBAs.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	6 Months Ended
	Jun. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Note 9 - Goodwill and Other Intangible Assets The following table summarizes the Company’s goodwill intangible as of the dates indicated: (in thousands) June 30, Additions Reductions December 31, Goodwill $ 63,462 — — $ 63,462 The following table summarizes the Company’s core deposit intangibles as of the dates indicated: (in thousands) June 30, Additions Reductions/ Fully December 31, Core deposit intangibles $ 8,074 — — — $ 8,074 Accumulated amortization (1,601 ) — $ (578 ) — (1,023 ) Core deposit intangibles, net $ 6,473 — $ (578 ) — $ 7,051 The Company recorded additions to its CDI of $6,614,000 in conjunction with the North Valley Bancorp acquisition on October 3, 2014, $898,000 in conjunction with the Citizens acquisition on September 23, 2011, and $562,000 in conjunction with the Granite acquisition on May 28, 2010. The following table summarizes the Company’s estimated core deposit intangible amortization (dollars in thousands): Years Ended Estimated Core Deposit 2015 $ 1,157 2016 1,157 2017 1,109 2018 1,044 2019 948 Thereafter $ 1,636

Mortgage Servicing Rights

Mortgage Servicing Rights	6 Months Ended
	Jun. 30, 2015
Text Block [Abstract]
Mortgage Servicing Rights	Note 10 - Mortgage Servicing Rights The following tables summarize the activity in, and the main assumptions we used to determine the fair value of mortgage servicing rights (“MSRs”) for the periods indicated (dollars in thousands): Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 Mortgage servicing rights: Balance at beginning of period $ 7,057 $ 6,107 $ 7,378 $ 6,165 Additions 236 153 421 276 Change in fair value 521 (351 ) 15 (532 ) Balance at end of period $ 7,814 $ 5,909 $ 7,814 $ 5,909 Servicing, late and ancillary fees received $ 528 $ 421 $ 1,062 $ 841 Balance of loans serviced at: Beginning of period $ 832,143 $ 672,341 $ 840,288 $ 680,197 End of period $ 827,333 $ 667,969 $ 827,333 $ 667,969 Weighted-average prepayment speed (CPR) 9.5 % 11.0 % Discount rate 10.0 % 10.0 % The changes in fair value of MSRs that occurred during the three and six months ended June 30, 2015 and 2014 were mainly due to changes in principal balances and changes in estimate life of the MSRs.

Indemnification Asset_Liability

Indemnification Asset/Liability	6 Months Ended
	Jun. 30, 2015
Text Block [Abstract]
Indemnification Asset/Liability	Note 11 - Indemnification Asset/Liability A summary of the activity in the balance of indemnification asset (liability) follows (in thousands): Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 Beginning (payable) receivable balance $ (433 ) $ (220 ) $ (349 ) $ 206 Effect of actual covered losses and change in estimated future covered losses (24 ) (97 ) (86 ) (565 ) Reimbursable expenses (revenue), net (18 ) 14 (21 ) 73 Payments made (received) 9 266 (10 ) 249 Ending payable balance $ (466 ) $ (37 ) $ (466 ) $ (37 ) Amount of indemnification asset (liability) recorded in other assets $ 105 $ (37 ) Amount of indemnification liability recorded in other liabilities (571 ) — Ending balance $ (466 ) $ (37 ) During May 2015, the indemnification portion of the Company’s agreement with the FDIC related to the Company’s acquisition of certain nonresidential real estate loans of Granite Community Bank in May 2010 expired. The indemnification portion of the Company’s agreement with the FDIC related to the Company’s acquisition of certain residential real estate loans of Granite Community Bank in May 2010 will expire in May 2018. The agreement specifies that recoveries of losses that are claimed by the Company and indemnified by the FDIC under the agreement that are recovered by the Company through May 2020 are to be shared with the FDIC in the same proportion as they were indemnified by the FDIC. In addition, the agreement specifies that at the end of the agreement in May 2020, to the extent that total claimed losses plus servicing expenses, net of recoveries, claimed under the agreement over the entire ten year period of the agreement do not meet a certain threshold, the Company will be required to pay to the FDIC a “true up” amount equal to fifty percent of the difference of the threshold and actual claimed losses plus servicing expenses, net of recoveries. The Company has continually been estimating, updating and recording this “true up” amount, at its estimated present value, since the inception of the agreement in May 2010. As of June 30, 2015, the present value of this “true up” amount is estimated to be $571,000, and is recorded in other liabilities.

Other Assets

Other Assets	6 Months Ended
	Jun. 30, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other Assets	Note 12 – Other Assets Other assets were comprised of (in thousands): June 30, December 31, Deferred tax asset, net $ 38,901 $ 37,706 Prepaid expense 2,462 2,034 Software 1,220 1,327 Advanced compensation 743 908 Capital Trusts 1,693 1,690 Investment in low income housing tax credit funds 4,431 — Miscellaneous other assets 5,347 8,070 Total other assets $ 54,797 $ 51,735

Deposits

Deposits	6 Months Ended
	Jun. 30, 2015
Banking and Thrift [Abstract]
Deposits	Note 13 - Deposits A summary of the balances of deposits follows (in thousands): June 30 December 31, Noninterest-bearing demand $ 1,060,650 $ 1,083,900 Interest-bearing demand 780,647 782,385 Savings 1,179,836 1,156,126 Time certificates, $250,000 and over 32,716 38,217 Other time certificates 287,833 319,795 Total deposits $ 3,341,682 $ 3,380,423 Certificate of deposit balances of $5,000,000 and $5,000,000 from the State of California were included in time certificates, $250,000 and over, at each of June 30, 2015 and December 31, 2014, respectively. The Bank participates in a deposit program offered by the State of California whereby the State may make deposits at the Bank’s request subject to collateral and credit worthiness constraints. The negotiated rates on these State deposits are generally more favorable than other wholesale funding sources available to the Bank. Overdrawn deposit balances of $1,263,000 and $1,216,000 were classified as consumer loans at June 30, 2015 and December 31, 2014, respectively.

Reserve for Unfunded Commitment

Reserve for Unfunded Commitments	6 Months Ended
	Jun. 30, 2015
Text Block [Abstract]
Reserve for Unfunded Commitments	Note 14 – Reserve for Unfunded Commitments The following tables summarize the activity in reserve for unfunded commitments for the periods indicated (dollars in thousands): Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 Balance at beginning of period $ 2,015 $ 2,230 $ 2,145 $ 2,415 Provision (benefit) for losses – unfunded commitments 110 (185 ) (20 ) (370 ) Balance at end of period $ 2,125 $ 2,045 $ 2,125 $ 2,045

Other Liabilities

Other Liabilities	6 Months Ended
	Jun. 30, 2015
Other Liabilities Disclosure [Abstract]
Other Liabilities	Note 15 – Other Liabilities Other liabilities were comprised of (in thousands): June 30, December 31, Deferred compensation $ 7,259 $ 7,408 Pension liability 27,114 26,798 Joint beneficiary agreements 2,843 2,728 Low income housing tax credit fund commitments 4,015 — Miscellaneous other liabilities 13,772 12,258 Total other liabilities $ 55,003 $ 49,192

Other Borrowings

Other Borrowings	6 Months Ended
	Jun. 30, 2015
Text Block [Abstract]
Other Borrowings	Note 16 - Other Borrowings A summary of the balances of other borrowings follows: June 30, December 31, (in thousands) Other collateralized borrowings, fixed rate, as of June 30, 2015 of 0.05%, payable on July 1, 2015 $ 6,735 $ 9,276 Total other borrowings $ 6,735 $ 9,276 The Company did not enter into any repurchase agreements during the six months ended June 30, 2015 or the year ended December 31, 2014. The Company had $6,735,000 and $9,276,000 of other collateralized borrowings at June 30, 2015 and December 31, 2014, respectively. Other collateralized borrowings are generally overnight maturity borrowings from non-financial institutions that are collateralized by securities owned by the Company. As of June 30, 2015, the Company has pledged as collateral and sold under agreements to repurchase investment securities with fair value of $6,735,000 under these other collateralized borrowings. The Company maintains a collateralized line of credit with the Federal Home Loan Bank of San Francisco (“FHLB”). Based on the FHLB stock requirements at June 30, 2015, this line provided for maximum borrowings of $1,086,339,000 of which none was outstanding, leaving $1,086,339,000 available. As of June 30, 2015, the Company has designated investment securities with fair value of $101,039,000 and loans totaling $1,582,611,000 as potential collateral under this collateralized line of credit with the FHLB. The Company maintains a collateralized line of credit with the San Francisco Federal Reserve Bank. As of June 30, 2015, this line provided for maximum borrowings of $119,625,000 of which none was outstanding, leaving $119,625,000 available. As of June 30, 2015, the Company has designated investment securities with fair value of $425,000 and loans totaling $185,333,000 as potential collateral under this collateralized line of credit with the San Francisco Federal Reserve Bank. The Company has available unused correspondent banking lines of credit from commercial banks totaling $15,000,000 for federal funds transactions at June 30, 2015.

Junior Subordinated Debt

Junior Subordinated Debt	6 Months Ended
	Jun. 30, 2015
Text Block [Abstract]
Junior Subordinated Debt	Note 17 – Junior Subordinated Debt On July 31, 2003, the Company formed a subsidiary business trust, TriCo Capital Trust I, to issue trust preferred securities. Concurrently with the issuance of the trust preferred securities, the trust issued 619 shares of common stock to the Company for $1,000 per share or an aggregate of $619,000. In addition, the Company issued a junior subordinated debenture to the trust in the amount of $20,619,000. The terms of the junior subordinated debenture are materially consistent with the terms of the trust preferred securities issued by TriCo Capital Trust I. Also on July 31, 2003, TriCo Capital Trust I completed an offering of 20,000 shares of cumulative trust preferred securities for cash in an aggregate amount of $20,000,000. The trust preferred securities are mandatorily redeemable upon maturity on October 7, 2033 with an interest rate that resets quarterly at three-month LIBOR plus 3.05%. TriCo Capital Trust I has the right to redeem the trust preferred securities on or after October 7, 2008. The trust preferred securities were issued through an underwriting syndicate to which the Company paid underwriting fees of $7.50 per trust preferred security or an aggregate of $150,000. The net proceeds of $19,850,000 were used to finance the opening of new branches, improve bank services and technology, repurchase shares of the Company’s common stock under its repurchase plan and increase the Company’s capital. On June 22, 2004, the Company formed a second subsidiary business trust, TriCo Capital Trust II, to issue trust preferred securities. Concurrently with the issuance of the trust preferred securities, the trust issued 619 shares of common stock to the Company for $1,000 per share or an aggregate of $619,000. In addition, the Company issued a junior subordinated debenture to the trust in the amount of $20,619,000. The terms of the junior subordinated debenture are materially consistent with the terms of the trust preferred securities issued by TriCo Capital Trust II. Also on June 22, 2004, TriCo Capital Trust II completed an offering of 20,000 shares of cumulative trust preferred securities for cash in an aggregate amount of $20,000,000. The trust preferred securities are mandatorily redeemable upon maturity on July 23, 2034 with an interest rate that resets quarterly at three-month LIBOR plus 2.55%. TriCo Capital Trust II has the right to redeem the trust preferred securities on or after July 23, 2009. The trust preferred securities were issued through an underwriting syndicate to which the Company paid underwriting fees of $2.50 per trust preferred security or an aggregate of $50,000. The net proceeds of $19,950,000 were used to finance the opening of new branches, improve bank services and technology, repurchase shares of the Company’s common stock under its repurchase plan and increase the Company’s capital. As a result of the Company’s acquisition of North Valley Bancorp on October 3, 2014, the Company assumed the junior subordinated debentures issued by North Valley Bancorp to North Valley Capital Trusts II, III & IV with face amounts of $6,186,000, $5,155,000 and $10,310,000, respectively. Also, as a result of the North Valley Bancorp acquisition, the Company acquired common stock interests in North Valley Capital Trusts II, III and IV with face valley of $186,000, $155,000, and $310,000, respectively. At the acquisition date of October 3, 2014, the junior subordinated debentures associated with North Valley Capital Trust II, III and IV were recorded on the Company’s books at their fair values of $5,006,000, $3,918,000, and $6,063,000, respectively. The related fair value discounts to face value of these debentures will be amortized over the remaining time to maturity for each of these debentures using the effective interest method. Similar, and proportional, discounts were applied to the acquired common stock interest in North Valley Capital Trusts II, III and IV, and these discounts will be proportionally amortized over the remaining time to maturity for each related debenture. TriCo Capital Trusts I and II, and North Valley Capital Trusts II, III and IV are collectively referred to as the Capital Trusts. The recorded book values of the junior subordinated 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, continues to qualify as Tier 1 or Tier 2 capital under interim guidance issued by the Board of Governors of the Federal Reserve System. The following table summarizes the terms and recorded balance of each subordinated debenture as of the date indicated (dollars in thousands): Subordinated Debt Series Maturity Face Coupon Rate As of June 30, 2015 Current Recorded TriCo Cap Trust I 10/7/2033 $ 20,619 3.05 % 3.33 % $ 20,619 TriCo Cap Trust II 7/23/2034 20,619 2.55 % 2.83 % 20,619 North Valley Trust II 4/24/2033 6,186 3.25 % 3.53 % 5,035 North Valley Trust III 4/24/2034 5,155 2.80 % 3.08 % 3,946 North Valley Trust IV 3/15/2036 10,310 1.33 % 1.60 % 6,150 $ 62,889 $ 56,369

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 18 - Commitments and Contingencies Restricted Cash Balances Lease Commitments At December 31, 2014, future minimum commitments under non-cancelable operating leases with initial or remaining terms of one year or more are as follows: Operating (in thousands) 2015 $ 3,419 2016 2,510 2017 1,856 2018 1,323 2019 859 Thereafter 1,180 Future minimum lease payments $ 11,147 Rent expense under operating leases was $959,000 and $734,000 during the three months ended June 30, 2015 and 2014, respectively. Rent expense was offset by rent income of $48,000 and $54,000 during the three months ended June 30, 2015 and 2014, respectively. Rent expense under operating leases was $1,943,000 and $1,490,000 during the six months ended June 30, 2015 and 2014, respectively. Rent expense was offset by rent income of $104,000 and $109,000 during the six months ended June 30, 2015 and 2014, respectively. Financial Instruments with Off-Balance-Sheet Risk 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: (in thousands) June 30, December 31, Financial instruments whose amounts represent risk: Commitments to extend credit: Commercial loans $ 185,842 $ 177,557 Consumer loans 393,218 392,705 Real estate mortgage loans 38,778 36,139 Real estate construction loans 38,295 49,774 Standby letters of credit 11,487 17,531 Deposit account overdraft privilege $ 97,875 $ 101,060 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 On January 24, 2014, a putative shareholder class action lawsuit was filed against TriCo, North Valley Bancorp and certain other defendants in connection with TriCo entering into the merger agreement with North Valley Bancorp. The lawsuit, which was filed in the Shasta County, California Superior Court, alleges that the members of the North Valley Bancorp board of directors breached their fiduciary duties to North Valley Bancorp shareholders by approving the proposed merger for inadequate consideration; approving the transaction in order receive benefits not equally shared by other North Valley Bancorp shareholders; entering into the merger agreement containing preclusive deal protection devices; and failing to take steps to maximize the value to be paid to the North Valley Bancorp shareholders. The lawsuit alleges claims against TriCo for aiding and abetting these alleged breaches of fiduciary duties. The plaintiff seeks, among other things, declaratory and injunctive relief concerning the alleged breaches of fiduciary duties injunctive relief prohibiting consummation of the merger, rescission, attorneys’ of the merger agreement, fees and costs, and other and further relief. On July 31, 2014 the defendants entered into a memorandum of understanding with the plaintiffs regarding the settlement of this lawsuit. In connection with the settlement contemplated by the memorandum of understanding and in consideration for the full settlement and release of all claims, TriCo and North Valley Bancorp agreed to make certain additional disclosures related to the proposed merger, which are contained in a Current Report on Form 8-K filed by each of the companies. The memorandum of understanding contemplated that the parties would negotiate in good faith and use their reasonable best efforts to enter into a stipulation of settlement. The parties entered into a stipulation of settlement dated May 18, 2015 that is subject to customary conditions, including final court approval following notice to North Valley Bancorp’s shareholders. In the stipulation of settlement, the plaintiff agreed that to seek no more than $375,000 in attorneys’ fees and costs. The court preliminarily approved the settlement by order dated June 22, 2015. The court will consider final approval of the settlement and the potential award of attorneys’ fees at a hearing that is scheduled for October 19, 2015. There can be no assurance that the court will approve the settlement. In such event, the proposed settlement as contemplated by the memorandum of understanding and stipulation of settlement may be terminated. On September 15, 2014, a former Personal Banker at one of the Bank’s in-store branches filed a Class Action Complaint against the Bank in Butte County Superior Court, alleging causes of action related to the observance of meal and rest periods and seeking to represent a class of current and former hourly-paid or non-exempt personal bankers, or employees with the same or similar job duties, employed by Defendants within the State of California during the preceding four years. On or about June 25, 2015, Plaintiff filed an Amended Complaint expanding the class definition to all current and formerly hourly-paid or non-exempt branch employees employed by Defendant’s within the State of California at any time during the period from September 15, 2010 to final judgment. The Bank has not yet responded to the First Amended Complaint, but denies the charges, and the Bank intends to vigorously defend the lawsuit against class certification and liability. On January 20, 2015, a current Personal Banker at one of the Bank’s in-store branches filed a First Amended Complaint against Tri Counties Bank and TriCo Bancshares, dba Tri Counties Bank, in Sacramento County Superior Court, alleging causes of action related to wage statement violations. Plaintiff seeks to represent a class of current and former exempt and non-exempt employees who worked for the Bank during the time period beginning October 18, 2013 through the date of the filing of this action. The Company and the Bank have responded to the First Amended Complaint, deny the charges, and intend to vigorously defend the lawsuit against class certification and liability. Neither the Company nor its subsidiaries, are party to any other material pending legal proceeding, nor is their property the subject of any material pending legal proceeding, except routine legal proceedings arising in the ordinary course of their business. None of these proceedings is expected to have a material adverse impact upon the Company’s business, consolidated financial position or results of operations. Other Commitments and Contingencies 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	6 Months Ended
	Jun. 30, 2015
Equity [Abstract]
Shareholders' Equity	Note 19 – Shareholders’ Equity Dividends Paid The Bank paid to the Company cash dividends in the aggregate amounts of $5,713,000 and $4,100,000 during the six months ended June 30, 2015 and 2014 respectively. The Bank is regulated by the Federal Deposit Insurance Corporation (FDIC) and the State of California Department of Business Oversight. Absent approval from the Commissioner of the Department of Business Oversight, 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, 2014, the Bank could pay dividends to the Company of up to $52,798,000. Stock Repurchase Plan On August 21, 2007, the Board of Directors adopted a plan to repurchase, as conditions warrant, up to 500,000 shares of the Company’s common stock on the open market. The timing of purchases and the exact number of shares to be purchased will depend on market conditions. The 500,000 shares authorized for repurchase under this stock repurchase plan represented approximately 3.2% of the Company’s 15,814,662 outstanding common shares as of August 21, 2007. This stock repurchase plan has no expiration date. As of March 31, 2015, the Company had repurchased 166,600 shares under this plan. Stock Repurchased Under Equity Compensation Plans During the six months ended June 30, 2015 and 2014, employees tendered 29,441 and 103,268 shares, respectively, of the Company’s common stock with market value of $699,000, and $2,551,000, respectively, in lieu of cash to exercise options to purchase shares of the Company’s stock and to pay income taxes related to such exercises as permitted by the Company’s shareholder-approved equity compensation plans. 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. Stock repurchased under equity incentive plans are not included in the total of stock repurchased under the stock repurchase plan announced on August 21, 2007.

Stock Options and Other Equity-

Stock Options and Other Equity-Based Incentive Instruments	6 Months Ended
	Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Options and Other Equity-Based Incentive Instruments	Note 20 - Stock Options and Other Equity-Based Incentive Instruments In March 2009, the Company’s Board of Directors adopted the TriCo Bancshares 2009 Equity Incentive Plan (2009 Plan) covering officers, employees, directors of, and consultants to, the Company. The 2009 Plan was approved by the Company’s shareholders in May 2009. The 2009 Plan allows for the granting of the following types of “stock awards” (Awards): incentive stock options, nonstatutory stock options, performance awards, restricted stock, restricted stock unit (RSU) awards and stock appreciation rights. RSUs that vest based solely on the grantee remaining in the service of the Company for a certain amount of time, are referred to as “service condition vesting RSUs”. RSUs that vest based on the grantee remaining in the service of the Company for a certain amount of time and a market condition such as the total return of the Company’s common stock versus the total return of an index of bank stocks, are referred to as “market plus service condition vesting RSUs”. In May 2013, the Company’s shareholders approved an amendment to the 2009 Plan increasing the maximum aggregate number of shares of TriCo’s common stock which may be issued pursuant to or subject to Awards from 650,000 to 1,650,000. The number of shares available for issuance under the 2009 Plan is reduced by: (i) one share for each share of common stock issued pursuant to a stock option or a Stock Appreciation Right and (ii) two shares for each share of common stock issued pursuant to a Performance Award, a Restricted Stock Award or a Restricted Stock Unit Award. When Awards made under the 2009 Plan expire or are forfeited or cancelled, the underlying shares will become available for future Awards under the 2009 Plan. To the extent that a share of common stock pursuant to an Award that counted as two shares against the number of shares again becomes available for issuance under the 2009 Plan, the number of shares of common stock available for issuance under the 2009 Plan shall increase by two shares. Shares awarded and delivered under the 2009 Plan may be authorized but unissued, or reacquired shares. As of June 30, 2015, 694,000 options for the purchase of common shares, and 92,802 restricted stock units were outstanding, and 729,397 shares remain available for issuance, under the 2009 Plan. In May 2001, the Company adopted the TriCo Bancshares 2001 Stock Option Plan (2001 Plan) covering officers, employees, directors of, and consultants to, the Company. Under the 2001 Plan, the option exercise price cannot be less than the fair market value of the Common Stock at the date of grant except in the case of substitute options. Options for the 2001 Plan expire on the tenth anniversary of the grant date. Vesting schedules under the 2001 Plan are determined individually for each grant. As of June 30, 2015, 344,850 options for the purchase of common shares were outstanding under the 2001 Plan. As of May 2009, as a result of the shareholder approval of the 2009 Plan, no new options will be granted under the 2001 Plan. Stock option activity during the six months ended June 30, 2015 is summarized in the following table: Number of Shares Option Price per Share Weighted Weighted Outstanding at December 31, 2014 1,102,850 $ 12.63 to $ 25.91 $ 18.25 Options granted — — to — — — Options exercised (64,000 ) $ 15.34 to $ 20.58 $ 19.32 Options forfeited — — to — — Outstanding at June 30, 2015 1,038,850 $ 12.63 to $ 25.91 $ 18.19 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 June 30, 2015: Currently Currently Not Total Number of options 755,850 283,000 1,038,850 Weighted average exercise price $ 18.56 $ 17.20 $ 18.19 Intrinsic value (in thousands) $ 4,219 $ 1,939 $ 6,158 Weighted average remaining contractual term (yrs.) 4.3 7.1 5.0 The 283,000 options that are currently not exercisable as of June 30, 2015 are expected to vest, on a weighted-average basis, over the next 2.1 years, and the Company is expected to recognize $1,380,000 of pre-tax compensation costs related to these options as they vest. The Company did not modify any option grants during 2014 or the six months ended June 30, 2015. Restricted stock unit (RSU) activity is summarized in the following table for the dates indicated: Service Condition Vesting RSUs Market Plus Service Condition Vesting RSUs Number of RSUs Weighted Date of Grant Number of RSUs Weighted Average Fair Value on Date of Grant Outstanding at December 31, 2014 30,920 15,366 RSUs granted 30,348 $ 23.45 18,348 $ 21.01 RSUs added through dividend credits 459 — RSUs released — — RSUs forfeited/expired (2,639 ) — Outstanding at June 30, 2015 59,088 33,714 The 59,088 of service condition vesting RSUs outstanding as of June 30, 2015 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. The 59,088 of service condition vesting RSUs outstanding as of June 30, 2015 are expected to vest, and be released, on a weighted-average basis, over the next 2.7 years. The Company is expected to recognize $1,017,000 of pre-tax compensation costs related to these service condition vesting RSUs between June 30, 2015 and their vesting dates. During the six months ended June 30, 2015, the Company did not modify any service condition vesting RSUs. During the three months ended December 31, 2014, the Company modified 13,749 service condition vesting RSUs that were granted on August 11, 2014 such that their vesting schedule was changed from 100% vesting on August 11, 2018 to 25% vesting on each of August 11, 2015, 2016, 2017 and 2018. During the nine months ended September 30, 2014, the Company did not modify any service condition vesting RSUs. The 33,714 of market plus service condition vesting RSUs that are currently outstanding as of June 30, 2015 are expected to vest, and be released, on a weighted-average basis, over the next 2.8 years. The Company is expected to recognize $595,000 of pre-tax compensation costs related to these RSUs between June 30, 2015 and their vesting dates. As of June 30, 2015, 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 50,571 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 the six months ended June 30, 2015 or during the year ended December 31, 2014.

Noninterest Income and Expense

Noninterest Income and Expense	6 Months Ended
	Jun. 30, 2015
Other Income and Expenses [Abstract]
Noninterest Income and Expense	Note 21 – Noninterest Income and Expense The components of other noninterest income were as follows (in thousands): Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 Service charges on deposit accounts $ 3,637 $ 2,724 $ 7,237 $ 5,414 ATM and interchange fees 3,383 2,192 6,385 4,205 Other service fees 779 533 1,493 1,053 Mortgage banking service fees 528 421 1,062 841 Change in value of mortgage servicing rights 521 (351 ) 15 (532 ) Total service charges and fees 8,848 5,519 16,192 10,981 Gain on sale of loans 837 514 1,459 978 Commissions on sale of non-deposit investment products 784 843 1,749 1,614 Increase in cash value of life insurance 675 400 1,350 797 Change in indemnification asset (57 ) (93 ) (122 ) (505 ) Gain (loss) on sale of foreclosed assets 115 241 426 1,468 Sale of customer checks 121 98 249 199 Lease brokerage income 245 111 382 218 Gain (loss) on disposal of fixed assets 1 71 (83 ) 70 Other 511 173 658 352 Total other noninterest income 3,232 2,358 6,068 5,191 Total noninterest income $ 12,080 $ 7,877 $ 22,260 $ 16,172 Mortgage loan servicing fees, net of change in fair value of mortgage loan servicing rights $ 1,049 $ 70 $ 1,077 $ 309 The components of noninterest expense were as follows (in thousands): Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 Base salaries, net of deferred loan origination costs $ 11,502 $ 9,008 $ 23,246 $ 17,874 Incentive compensation 1,390 1,205 2,986 2,328 Benefits and other compensation costs 4,350 3,104 9,110 6,418 Total salaries and benefits expense 17,242 13,317 35,342 26,620 Occupancy 2,541 1,802 4,958 3,764 Equipment 1,527 1,060 2,941 2,096 Data processing and software 1,834 1,350 3,786 2,528 ATM network charges 985 710 1,755 1,353 Telecommunications 785 713 1,671 1,293 Postage 330 221 642 448 Courier service 253 224 501 458 Advertising 1,002 341 1,810 683 Assessments 694 481 1,345 1,002 Operational losses 149 150 273 327 Professional fees 1,035 1,275 2,154 1,889 Foreclosed assets expense 102 151 200 309 Provision for foreclosed asset losses 174 4 241 40 Change in reserve for unfunded commitments 110 (185 ) (20 ) (370 ) Intangible amortization 289 52 578 104 Merger expense — 418 586 643 Other 3,384 3,032 5,955 5,246 Total other noninterest expense 15,194 11,799 29,376 21,813 Total noninterest expense $ 32,436 $ 25,116 $ 64,718 $ 48,433 Merger expense: Data processing and software — — $ 108 — Professional fees — $ 243 120 $ 468 Other — 175 358 175 Total merger expense — $ 418 $ 586 $ 643

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Note 22 - Income Taxes The provisions for income taxes applicable to income before taxes 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 for the periods indicated as follows: Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 Federal statutory income tax rate 35.0 % 35.0 % 35.0 % 35.0 % State income taxes, net of federal tax benefit 6.7 7.1 6.8 7.0 Tax-exempt interest on municipal obligations (0.6 ) (0.5 ) (0.5 ) (0.4 ) Increase in cash value of insurance policies (1.3 ) (1.7 ) (1.4 ) (1.3 ) Nondeductible merger expenses — 1.2 — 0.6 Other (0.3 ) 1.0 0.1 0.3 Effective Tax Rate 39.5 % 42.1 % 40.0 % 41.2 %

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Earnings Per Share	Note 23 – 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. 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 are determined using the treasury stock method. Earnings per share have been computed based on the following: Three months ended Six months ended (in thousands) 2015 2014 2015 2014 Net income $ 11,366 $ 4,859 $ 19,702 $ 12,224 Average number of common shares outstanding 22,745 16,129 22,736 16,113 Effect of dilutive stock options 235 181 229 203 Average number of common shares outstanding used to calculate diluted earnings per share 22,980 16,310 22,965 16,316 Options excluded from diluted earnings per share because the effect of these options was antidilutive 23 101 23 101 Restricted stock excluded from diluted earnings per share because the effect of these restricted stock was antidilutive — n/a — n/a

Comprehensive Income

Comprehensive Income	6 Months Ended
	Jun. 30, 2015
Equity [Abstract]
Comprehensive Income	Note 24 – Comprehensive Income 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 accumulated other comprehensive income, included in shareholders’ equity, are as follows: June 30, December 31, (in thousands) Net unrealized (losses) gains on available for sale securities $ (697 ) $ 4,040 Tax effect 293 (1,699 ) Unrealized holding gains on available for sale securities, net of tax (404 ) 2,341 Unfunded status of the supplemental retirement plans (7,501 ) (7,885 ) Tax effect 3,153 3,315 Unfunded status of the supplemental retirement plans, net of tax (4,348 ) (4,570 ) Joint beneficiary agreement liability 26 26 Tax effect — — Joint beneficiary agreement liability, net of tax 26 26 Accumulated other comprehensive loss $ (4,726 ) $ (2,203 ) The components of other comprehensive income and related tax effects are as follows: Three Months Ended Six Months Ended (in thousands) 2015 2014 2015 2014 Unrealized holding (losses) gains on available for sale securities before reclassifications $ (4,752 ) $ 658 $ (4,737 ) $ 553 Amounts reclassified out of accumulated other comprehensive income — — — — Unrealized holding (losses) gains on available for sale securities after reclassifications (4,752 ) 658 (4,737 ) 553 Tax effect 1,998 (277 ) 1,992 (232 ) Unrealized holding (losses) gains on available for sale securities, net of tax (2,754 ) 381 (2,745 ) 321 Change in unfunded status of the supplemental retirement plans before reclassifications — — — — Amounts reclassified out of accumulated other comprehensive income: Amortization of prior service cost (14 ) 5 (28 ) 10 Amortization of actuarial losses 206 4 412 8 Total amounts reclassified out of accumulated other comprehensive income 192 9 384 18 Change in unfunded status of the supplemental retirement plans after reclassifications 192 9 384 18 Tax effect (81 ) (4 ) (162 ) (8 ) Change in unfunded status of the supplemental retirement plans, net of tax 111 5 222 10 Change in joint beneficiary agreement liability before reclassifications — — — — Amounts reclassified out of accumulated other comprehensive income — — — — Change in joint beneficiary agreement liability after reclassifications — — — — Tax effect — — — — Change in joint beneficiary agreement liability, net of tax — — — — Total other comprehensive income (loss) $ (2,643 ) $ 386 $ (2,523 ) $ 331

Retirement Plans

Retirement Plans	6 Months Ended
	Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract]
Retirement Plans	Note 25 - 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. Prior to July 1, 2015, the Company did not contribute to the 401(k) Plan. Effective July 1, 2015, the Company initiated a discretionary matching contribution equal to 50% of participant’s elective deferrals each quarter, up to 4% of eligible compensation. The Company did not incur any material expenses attributable to the 401(k) Plan during 2014 or the six months ended June 30, 2015. Employee Stock Ownership Plan Substantially all employees with at least one year of service are covered by a discretionary employee stock ownership plan (ESOP). Contributions are made to the plan at the discretion of the Board of Directors. Contributions to the plan totaling $1,138,000 and $366,000 during the three months ended June 30, 2015 and 2014, respectively, are included in salary expense. Contributions to the plan totaling $1,506,000 and $561,000 during the six months ended June 30, 2015 and 2014, respectively, are included in salary expense. Company shares owned by the ESOP are paid dividends and included in the calculation of earnings per share exactly as other common shares outstanding. 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 the participants and intends to hold these policies until death as a cost recovery of the Company’s deferred compensation obligations of $7,259,000 and $7,408,000 at June 30, 2015 and December 31, 2014, respectively. Earnings credits on deferred balances totaling $137,000 and $138,000 during the three months ended June 30, 2015 and 2014, respectively, are included in noninterest expense. Earnings credits on deferred balances totaling $286,000 and $290,000 during the six months ended June 30, 2015 and 2014, respectively, are included in noninterest expense. Supplemental Retirement Plans The Company has supplemental retirement plans for current and former 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 (but is not required) to use the cash values of these policies to pay the retirement obligations. The following table sets forth the net periodic benefit cost recognized for the plans: (in thousands) Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 Net pension cost included the following components: Service cost-benefits earned during the period $ 256 $ 163 $ 512 $ 326 Interest cost on projected benefit obligation 239 174 478 348 Amortization of net obligation at transition — 1 — 1 Amortization of prior service cost (14 ) 34 (28 ) 69 Recognized net actuarial loss 206 4 412 8 Net periodic pension cost $ 687 $ 376 $ 1,374 $ 752 Company contributions to pension plans $ 455 $ 376 $ 661 $ 752 Pension plan payouts to participants $ 455 $ 376 $ 661 $ 752 For the year ending December 31, 2015, the Company expects to contribute and pay out as benefits $1,214,000 to participants under the plans.

Related Party Transactions

Related Party Transactions	6 Months Ended
	Jun. 30, 2015
Related Party Transactions [Abstract]
Related Party Transactions	Note 26 - 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 2015 and 2014 (in thousands): Balance December 31, 2013 $ 2,636 Advances/new loans 2,106 Removed/payments (1,610 ) Balance December 31, 2014 $ 3,132 Advances/new loans 745 Removed/payments (582 ) Balance June 30, 2015 $ 3,295 Director Chrysler is a principal owner and CEO of Modern Building Inc. Modern Building Inc. provided construction services to the Company related to new and existing Bank facilities for aggregate payments of $216,000 during the six months ended June 30, 2015 and $1,181,000 during the year ended December 31, 2014.

Fair Value Measurement

Fair Value Measurement	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurement	Note 27 - 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 Loans held for sale Impaired originated and PNCI loans Foreclosed assets Mortgage servicing rights The table below presents the recorded amount of assets and liabilities measured at fair value on a recurring basis (in thousands): Fair value at June 30, 2015 Total Level 1 Level 2 Level 3 Securities available for sale: Obligations of U.S. government corporations and agencies $ 240,552 — $ 240,552 — Obligations of states and political subdivisions 38,987 — 38,987 — Corporate debt securities 1,900 — 1,900 — Marketable equity services 2,991 $ 2,991 — — Mortgage servicing rights 7,814 — — $ 7,814 Total assets measured at fair value $ 292,244 $ 2,991 $ 281,439 $ 7,814 Fair value at December 31, 2014 Total Level 1 Level 2 Level 3 Securities available for sale: Obligations of U.S. government corporations and agencies $ 75,120 — $ 75,120 — Obligations of states and political subdivisions 3,175 — 3,175 — Corporate debt securities 1,908 — 1,908 — Marketable equity securities 3,002 $ 3,002 — — Mortgage servicing rights 7,378 — — $ 7,378 Total assets measured at fair value $ 90,583 $ 3,002 $ 80,203 $ 7,378 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 the three months ended June 30, 2015 or the year ended December 31, 2014. 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 time periods indicated. Had there been any transfer into or out of Level 3 during the time periods indicated, 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): Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 Mortgage servicing rights: Balance at beginning of period $ 7,057 $ 6,107 $ 7,378 $ 6,165 Issuances 235 153 421 276 Change included in earnings 522 (351 ) 15 (532 ) Balance at end of period $ 7,814 $ 5,909 $ 7,814 $ 5,909 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 presents quantitative information about recurring Level 3 fair value measurements at June 30, 2015: Fair Value Valuation Technique Unobservable Inputs Range, Mortgage Servicing Rights $ 7,814 Discounted cash flow Constant prepayment rate 6.3%-22.7%, 9.5% Discount rate 10.0%-12.0%, 10.0% The following table presents quantitative information about recurring Level 3 fair value measurements at December 31, 2014: Fair Value Valuation Technique Unobservable Range, Mortgage Servicing Rights $ 7,378 Discounted cash flow Constant prepayment rate 5.7%-23.4%, 12.0% Discount rate 10.0%-12.0%, 10.0% The table below presents the recorded amount of certain assets measured at fair value on a nonrecurring basis, as of the dates indicated. For these purposes, an asset is deemed to be measured at fair value if it had a write-down or an additional allowance provided during the periods indicated, and the recorded value of the asset at the end of the period is equal to the net value of the underlying collateral (in thousands): Total Six months ended June 30, 2015 Total Level 1 Level 2 Level 3 Gains/(Losses) Fair value: Impaired Originated & PNCI loans $ 3,377 — — $ 3,377 $ 151 Foreclosed assets 3,190 — — 3,190 (239 ) Total assets measured at fair value $ 6,567 — — $ 6,567 $ (88 ) Total Year ended December 31, 2014 Total Level 1 Level 2 Level 3 (Losses) Fair value: Impaired Originated & PNCI loans $ 2,480 — — $ 2,480 $ (636 ) Foreclosed assets 2,611 — — 2,611 (137 ) Total assets measured at fair value $ 5,091 — — $ 5,091 $ (773 ) Total Six months ended June 30, 2014 Total Level 1 Level 2 Level 3 (Losses) Fair value: Impaired Originated & PNCI loans $ 3,842 — — $ 3,842 $ (509 ) Foreclosed assets 566 — — 566 (16 ) Total assets measured at fair value $ 4,408 — — $ 4,408 $ (525 ) The table below presents the gains and losses from nonrecurring fair value adjustments that occurred in the periods indicated (in thousands): Three months ended June 30, (Gains)/losses from nonrecurring fair value adjustments: 2015 2014 Impaired Originated & PNCI loans $ (22 ) $ 298 Foreclosed assets 206 4 Total losses from nonrecurring fair value adjustments $ 184 $ 302 The impaired Originated and PNCI loan amount above represents impaired, collateral dependent loans that have been adjusted to fair value. When we identify a collateral dependent loan as impaired, we measure the impairment 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 impaired 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 foreclosed assets amount 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 its 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. 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. 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 table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at June 30, 2015: Fair Value Valuation Technique Unobservable Range, Impaired Originated & PNCI loans $ 3,377 Sales comparison approach Adjustment for differences (5.0)%-(42.0)%, (9.0)% Income approach Capitalization rate 8.0%-9.1%, 8.1% Foreclosed assets $ 3,190 Sales comparison Adjustment for differences approach between comparable sales (0.0)%-(30.1)%, (3.7)% The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at December 31, 2014: Fair Value Valuation Technique Unobservable Range, Impaired Originated & PNCI loans $ 2,480 Sales comparison approach Adjustment for differences (5.0)%-(42.5)%, (10.1)% Income approach Capitalization rate 9.09%-9.09 %, 9.09% Foreclosed assets $ 2,611 Sales comparison Adjustment for differences approach between comparable sales (5.0)%-(29.4)%, (8.2)% In addition to the methods and assumptions used to estimate the fair value of each class of financial instrument noted above, the following methods and assumptions were used to estimate the fair value of other classes of financial instruments for which it is practical to estimate the fair value. Short-term Instruments Securities held to maturity Restricted Equity Securities Originated and PNCI loans PCI Loans Deposit Liabilities Other Borrowings Junior Subordinated Debentures Commitments to Extend Credit and Standby Letters of Credit Fair values for financial instruments are management’s estimates of the values at which the instruments could be exchanged in a transaction between willing parties. These estimates are subjective and may vary significantly from amounts that would be realized in actual transactions. In addition, other significant assets are not considered financial assets including, any mortgage banking operations, deferred tax assets, and premises and equipment. Further, the tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on the fair value estimates and have not been considered in any of these estimates. 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): June 30, 2015 December 31, 2014 Carrying Fair Carrying Fair Financial assets: Level 1 inputs: Cash and due from banks $ 92,234 $ 92,234 $ 93,150 $ 93,150 Cash at Federal Reserve and other banks 77,269 77,269 517,578 517,578 Level 2 inputs: Securities held to maturity 776,283 778,697 676,426 688,779 Restricted equity securities 16,956 N/A 16,956 N/A Loans held for sale 4,630 4,630 3,579 3,579 Level 3 inputs: Loans, net 2,358,308 2,439,466 2,245,938 2,342,570 Indemnification (liability) asset (466 ) (466 ) (349 ) (349 ) Financial liabilities: Level 2 inputs: Deposits 3,341,682 3,341,380 3,380,423 3,380,486 Other borrowings 6,735 6,735 9,276 9,276 Level 3 inputs: Junior subordinated debt 56,369 42,063 56,272 45,053 Contract Fair Contract Fair Off-balance sheet: Level 3 inputs: Commitments $ 656,133 $ 6,561 $ 656,175 $ 6,562 Standby letters of credit 11,487 115 17,531 175 Overdraft privilege commitments 97,875 979 101,060 1,011

TriCo Bancshares Condensed Fina

TriCo Bancshares Condensed Financial Statements (Parent Only)	6 Months Ended
	Jun. 30, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
TriCo Bancshares Condensed Financial Statements (Parent Only)	Note 28 - TriCo Bancshares Condensed Financial Statements (Parent Only) Condensed Balance Sheets June 30, December 31, (In thousands) Assets Cash and Cash equivalents $ 2,437 $ 2,229 Investment in Tri Counties Bank 483,796 470,797 Other assets 1,760 1,902 Total assets $ 487,993 $ 474,928 Liabilities and shareholders’ equity Other liabilities $ 480 $ 484 Junior subordinated debt 56,369 56,272 Total liabilities 56,849 56,756 Shareholders’ equity: Common stock, no par value: authorized 50,000,000 shares; issued and outstanding 22,749,523 and 22,714,964 shares, respectively 245,965 244,318 Retained earnings 189,905 176,057 Accumulated other comprehensive loss, net (4,726 ) (2,203 ) Total shareholders’ equity 431,144 418,172 Total liabilities and shareholders’ equity $ 487,993 $ 474,928 Condensed Statements of Income Three months ended June 30, Six months ended June 30, (In thousands) 2015 2014 2015 2014 Interest expense $ (491 ) $ (306 ) $ (973 ) $ (610 ) Administration expense (263 ) (466 ) (416 ) (790 ) Loss before equity in net income of Tri Counties Bank (754 ) (772 ) (1,389 ) (1,400 ) Equity in net income of Tri Counties Bank: Distributed 3,593 2,050 5,713 4,100 (Over) under distributed 8,210 3,400 14,794 9,079 Income tax benefit 317 181 584 445 Net income $ 11,366 $ 4,859 $ 19,702 $ 12,224 Condensed Statements of Comprehensive Income Three months ended June 30, Six months ended June 30, (In thousands) 2015 2014 2015 2014 Net income $ 11,366 $ 4,859 $ 19,702 $ 12,224 Other comprehensive income (loss), net of tax: Unrealized holding gains (losses) on available for sale securities arising during the period (2,754 ) 381 (2,745 ) 321 Change in minimum pension liability 111 5 222 10 Other comprehensive income (loss) (2,643 ) 386 (2,523 ) 331 Comprehensive income $ 8,723 $ 5,245 $ 17,179 $ 12,555 Condensed Statements of Cash Flows Six months ended June 30, (In thousands) 2015 2014 Operating activities: Net income $ 19,702 $ 12,224 Adjustments to reconcile net income to net cash provided by operating activities: Over (under) distributed equity in earnings of Tri Counties Bank (14,794 ) (9,079 ) Stock option vesting expense 698 534 Stock option excess tax benefits (30 ) (220 ) Net change in other assets and liabilities (463 ) (474 ) Net cash provided by operating activities 5,113 2,985 Investing activities: None Financing activities: Issuance of common stock through option exercise 30 220 Stock option excess tax benefits 569 527 Repurchase of common stock (31 ) (292 ) Cash dividends paid — common (5,473 ) (3,547 ) Net cash used for financing activities (4,905 ) (3,092 ) (Decrease) increase in cash and cash equivalents 208 (107 ) Cash and cash equivalents at beginning of year 2,229 2,520 Cash and cash equivalents at end of year $ 2,437 $ 2,413

Regulatory Matters

Regulatory Matters	6 Months Ended
	Jun. 30, 2015
Banking and Thrift [Abstract]
Regulatory Matters	Note 29 - Regulatory Matters The Company is 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 Company’s consolidated financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company must meet specific capital guidelines that involve quantitative measures of the Company’s assets, liabilities and certain off-balance-sheet items as calculated under regulatory accounting practices. The Company’s 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 the Company to maintain minimum amounts and ratios (set forth in the table below) of total, Tier 1, and common equity Tier 1capital to risk-weighted assets, and of Tier 1 capital to average assets. Management believes, as of June 30, 2015, that the Company meets all capital adequacy requirements to which it is subject. The following table presents actual and required capital ratios as of June 30, 2015 for the Company and the Bank under Basel III Capital Rules. The minimum capital amounts presented include the minimum required capital levels as of June 30, 2015 based on the phased-in provisions of the Basel III Capital Rules and the minimum required capital levels as of January 1, 2019 when the Basel III Capital Rules have been fully phased-in. Capital levels required to be considered well capitalized are based upon prompt corrective action regulations, as amended to reflect the changes under the Basel III Capital Rules. Actual Minimum Capital Phase-in Schedule Minimum Capital Required to be Amount Ratio Amount Ratio Amount Ratio Amount Ratio (dollars in thousands) As of June 30, 2015: Total Capital (to Risk Weighted Assets): Consolidated $ 454,345 15.16 % $ 239,794 8.00 % $ 314,729 10.50 % $ 299,742 10.00 % Tri Counties Bank $ 452,301 15.10 % $ 239,651 8.00 % $ 314,542 10.50 % $ 299,564 10.00 % Tier 1 Capital (to Risk Weighted Assets): Consolidated $ 416,876 13.91 % $ 179,845 6.00 % $ 254,781 8.50 % $ 239,794 8.00 % Tri Counties Bank $ 414,854 13.85 % $ 179,739 6.00 % $ 254,630 8.50 % $ 239,651 8.00 % Common equity Tier 1 Capital (to Risk Weighted Assets): Consolidated $ 362,200 12.08 % $ 134,884 4.50 % $ 209,820 7.00 % $ 194,832 6.50 % Tri Counties Bank $ 414,854 13.85 % $ 134,804 4.50 % $ 209,695 7.00 % $ 194,717 6.50 % Tier 1 Capital (to Average Assets): Consolidated $ 416,876 10.91 % $ 152,821 4.00 % $ 152,821 4.00 % $ 190,026 5.00 % Tri Counties Bank $ 414,854 10.86 % $ 152,747 4.00 % $ 152,747 4.00 % $ 190,934 5.00 % The following table presents actual and required capital ratios as of December 31, 2104 for the Company and the Bank under the regulatory capital rules then in effect. Actual Minimum Minimum Amount Ratio Amount Ratio Amount Ratio (dollars in thousands) As of December 31, 2014: Total Capital (to Risk Weighted Assets): Consolidated $ 436,955 15.63 % $ 223,603 8.0 % N/A N/A Tri Counties Bank $ 433,286 15.51 % $ 223,449 8.0 % $ 279,311 10.0 % Tier 1 Capital (to Risk Weighted Assets): Consolidated $ 401,971 14.38 % $ 111,801 4.0 % N/A N/A Tri Counties Bank $ 398,325 14.26 % $ 111,724 4.0 % $ 167,587 6.0 % Tier 1 Capital (to Average Assets): Consolidated $ 401,971 10.80 % $ 148,819 4.0 % N/A N/A Tri Counties Bank $ 398,325 10.71 % $ 148,734 4.0 % $ 185,918 5.0 % As of June 30, 2015, capital levels at the Company and the Bank exceed all capital adequacy requirements under the Basel III Capital Rules on a fully phased-in basis. Based on the ratios presented above, capital levels as June 30, 2015 at the Company and the Bank exceed the minimum levels necessary to be considered “well capitalized”.

Summary of Quarterly Results of

Summary of Quarterly Results of Operations (unaudited)	6 Months Ended
	Jun. 30, 2015
Quarterly Financial Information Disclosure [Abstract]
Summary of Quarterly Results of Operations (unaudited)	Note 30 - Summary of Quarterly Results of Operations (unaudited) The following table sets forth the results of operations for the periods indicated, and is unaudited; however, in the opinion of Management, it reflects all adjustments (which include only normal recurring adjustments) necessary to present fairly the summarized results for such periods. 2015 Quarters Ended December 31, September 30, June 30, March 31, (dollars in thousands, except per share data) Interest and dividend income: Loans: Discount accretion PCI – cash basis $ 404 $ 172 Discount accretion PCI – other 907 1,274 Discount accretion PNCI 822 1,348 All other loan interest income 29,886 28,371 Total loan interest income 32,019 31,165 Debt securities, dividends and interest bearing cash at Banks (not FTE) 7,848 6,560 Total interest income 39,867 37,725 Interest expense 1,346 1,382 Net interest income 38,521 36,343 (Benefit from) provision for loan losses (633 ) 197 Net interest income after provision for loan losses 39,154 36,146 Noninterest income 12,080 10,180 Noninterest expense 32,436 32,282 Income before income taxes 18,798 14,044 Income tax expense 7,432 5,708 Net income $ 11,366 $ 8,336 Per common share: Net income (diluted) $ 0.49 $ 0.36 Dividends $ 0.13 $ 0.11 2014 Quarters Ended December 31, September 30, June 30, March 31, (dollars in thousands, except per share data) Interest and dividend income: Loans: Discount accretion PCI – cash basis $ 107 $ 290 $ 69 $ 203 Discount accretion PCI – other 919 822 811 984 Discount accretion PNCI 796 402 624 379 All other loan interest income 28,914 23,466 22,929 22,172 Total loan interest income 30,736 24,980 24,433 23,738 Debt securities, dividends and interest bearing cash at Banks (not FTE) 5,671 4,151 3,985 3,421 Total interest income 36,407 29,131 28,418 27,159 Interest expense 1,437 1,082 1,075 1,087 Net interest income 34,970 28,049 27,343 26,072 (Benefit from) provision for loan losses (1,421 ) (2,977 ) 1,708 (1,355 ) Net interest income after provision for loan losses 36,391 31,026 25,635 27,427 Noninterest income 9,755 8,589 7,877 8,295 Noninterest expense 36,566 25,380 25,116 23,317 Income before income taxes 9,580 14,235 8,396 12,405 Income tax expense 3,930 6,001 3,537 5,040 Net income $ 5,650 $ 8,234 $ 4,859 $ 7,365 Per common share: Net income (diluted) $ 0.25 $ 0.50 $ 0.30 $ 0.45 Dividends $ 0.11 $ 0.11 $ 0.11 $ 0.11

Summary of Significant Accoun39

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Description of Business and Basis of Presentation	Description of Business and Basis of Presentation TriCo Bancshares (the “Company”) is a California corporation organized to act as a bank holding company for Tri Counties Bank (the “Bank”). The Company and the Bank are headquartered in Chico, California. The Bank is a California-chartered bank that is engaged in the general commercial banking business in 26 California counties. Tri Counties Bank currently operates from 57 traditional branches and 16 in-store branches. The Company has five capital subsidiary business trusts (collectively, the Capital Trusts) that issued trust preferred securities, including two organized by TriCo and three acquired with the acquisition of North Valley Bancorp. See Note 17 – Junior Subordinated Debt. The unaudited condensed financial statements of the Company have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission. Certain information and note disclosures normally included in annual financial statements prepared in accordance with generally accepted accounting principles have been condensed or omitted pursuant to those rules and regulations, although the Company believes that the disclosures made are adequate to make the information not misleading. In the opinion of Management, all adjustments, consisting solely of normal recurring adjustments, considered necessary for a fair presentation of results for the interim periods presented have been included. These interim condensed consolidated financial statements should be read in conjunction with the financial statements and related notes contained in the Company’s 2014 Annual Report on Form 10-K filed with the Securities and Exchange Commission on March 13, 2015. Operating results for the three and six months ended June 30, 2014 do not include the operating results of North Valley Bancorp, which the Company acquired on October 3, 2014. The condensed consolidated financial statements include the accounts of the Company and its wholly-owned financial subsidiary, Tri Counties Bank. All significant intercompany balances and transactions have been eliminated. The Capital Trusts are unconsolidated subsidiaries as the Company is not the primary beneficiary of the trusts and they are not considered variable interest entities. Operating results for the three and six months ended June 30, 2015 are not necessarily indicative of the results that may be expected for the year ending December 31, 2015. Certain amounts in the consolidated financial statements for the year ended December 31, 2014 and for the three and six months ended June 30, 2014 may have been reclassified to conform to the presentation of the condensed consolidated financial statements in 2015.
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 evaluates its estimates on an on-going basis. 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. As described in Note 2, the Company acquired North Valley Bancorp on October 3, 2014. The acquired assets and assumed liabilities were measured at estimated fair value values under the acquisition method of accounting. The Company made significant estimates and exercised significant judgment in accounting for the acquisition. The Company determined loan fair values based on loan file reviews, loan risk ratings, appraised collateral values, expected cash flows and historical loss factors. Foreclosed assets were primarily valued based on appraised values of the repossessed loan collateral. Land and building were valued based on appraised values. An identifiable intangible was also recorded representing the fair value of the core deposit customer base based on an evaluation of the cost of such deposits relative to alternative funding sources. The fair value of time deposits and borrowings were determined based on the present value of estimated future cash flows using current rates as of the acquisition date.
Significant Group Concentration of Credit Risk	Significant Group Concentration of Credit Risk The Company grants agribusiness, commercial, consumer, and residential loans to customers located throughout the northern San Joaquin Valley, the Sacramento Valley and northern mountain regions of 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.
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.
Investment Securities	Investment Securities The Company classifies its debt and marketable equity 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. 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. Available for sale 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. Premiums and discounts are amortized or accreted over the life of the related investment security as an adjustment to yield using the effective interest method. Dividend and interest income are recognized when earned. Realized gains and losses are derived from the amortized cost of the security sold. During the six months ended June 30, 2015, and the year ended December 31, 2014, the Company did not have any securities classified as trading. The Company assesses other-than-temporary impairment (“OTTI”) based on whether it intends to sell a security or if it is likely that the Company would be required to sell the security before recovery of the amortized cost basis of the investment, which may be maturity. For debt securities, if we intend to sell the security or it is likely that we will be required to sell the security before recovering its cost basis, the entire impairment loss would be recognized in earnings as an OTTI. If we do not intend to sell the security and it is not likely that we will be required to sell the security but we do not expect to recover the entire amortized cost basis of the security, only the portion of the impairment loss representing credit losses would be recognized in earnings. The credit loss on a security is measured as the difference between the amortized cost basis and the present value of the cash flows expected to be collected. Projected cash flows are discounted by the original or current effective interest rate depending on the nature of the security being measured for potential OTTI. The remaining impairment related to all other factors, the difference between the present value of the cash flows expected to be collected and fair value, is recognized as a charge to other comprehensive income (“OCI”). Impairment losses related to all other factors are presented as separate categories within OCI. The accretion of the amount recorded in OCI increases the carrying value of the investment and does not affect earnings. If there is an indication of additional credit losses the security is re-evaluated according to the procedures described above. No OTTI losses were recognized during the six months ended June 30, 2015 or the year ended December 31, 2014.
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 Company 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 Company 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.
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 noninterest 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 Loan Losses	Loans and Allowance for Loan Losses Loans originated by the Company, i.e., not purchased or acquired in a business combination, are referred to as originated loans. Originated 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 of the related loan’s yield over the actual life of the loan. Originated loans on which the accrual of interest has been discontinued are designated as nonaccrual loans. Originated 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 an originated 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 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. An allowance for loan losses for originated loans is established through a provision for loan losses charged to expense. The allowance is maintained at a level which, in Management’s judgment, is adequate to absorb probable incurred credit losses inherent in the loan portfolio as of the balance sheet date. Originated loans and deposit related overdrafts are charged against the allowance for loan losses when Management believes that the collectability of the principal is unlikely or, with respect to consumer installment loans, according to an established delinquency schedule. The allowance is an amount that Management believes will be adequate to absorb probable incurred losses inherent in existing loans and leases, based on evaluations of the collectability, impairment and prior loss experience of loans and leases. The evaluations take into consideration such factors as changes in the nature and size of the portfolio, overall portfolio quality, loan concentrations, specific problem loans, and current economic conditions that may affect the borrower’s ability to pay. The Company defines an originated loan as impaired when it is probable the Company will be unable to collect all amounts due according to the contractual terms of the loan agreement. Impaired originated loans are measured based on the present value of expected future cash flows discounted at the loan’s original effective interest rate. As a practical expedient, impairment may be measured based on the loan’s observable market price or the fair value of the collateral if the loan is collateral dependent. When the measure of the impaired loan is less than the recorded investment in the loan, the impairment is recorded through a valuation allowance. In situations related to originated loans where, for economic or legal reasons related to a borrower’s financial difficulties, the Company grants a concession for other than an insignificant period of time to the borrower that the Company would not otherwise consider, the related loan is classified as a troubled debt restructuring (TDR). The Company strives to identify borrowers in financial difficulty early and work with them to modify to more affordable terms before their loan reaches nonaccrual status. These modified terms may include rate reductions, principal forgiveness, payment forbearance and other actions intended to minimize the economic loss and to avoid foreclosure or repossession of the collateral. In cases where the Company grants the borrower new terms that result in the loan being classified as a TDR, the Company measures any impairment on the restructuring as noted above for impaired loans. TDR loans are classified as impaired until they are fully paid off or charged off. Loans that are in nonaccrual status at the time they become TDR loans, remain in nonaccrual status until the borrower demonstrates a sustained period of performance which the Company generally believes to be six consecutive months of payments, or equivalent. Otherwise, TDR loans are subject to the same nonaccrual and charge-off policies as noted above with respect to their restructured principal balance. Credit risk is inherent in the business of lending. As a result, the Company maintains an allowance for loan losses to absorb probable incurred losses inherent in the Company’s originated loan portfolio. This is maintained through periodic charges to earnings. These charges are included in the Consolidated Statements of Income as provision for loan losses. All specifically identifiable and quantifiable losses are immediately charged off against the allowance. However, for a variety of reasons, not all losses are immediately known to the Company and, of those that are known, the full extent of the loss may not be quantifiable at that point in time. The balance of the Company’s allowance for originated loan losses is meant to be an estimate of these unknown but probable losses inherent in the portfolio. The Company formally assesses the adequacy of the allowance for originated loan losses on a quarterly basis. Determination of the adequacy is based on ongoing assessments of the probable risk in the outstanding originated loan portfolio, and to a lesser extent the Company’s originated loan commitments. These assessments include the periodic re-grading of credits based on changes in their individual credit characteristics including delinquency, seasoning, recent financial performance of the borrower, economic factors, changes in the interest rate environment, growth of the portfolio as a whole or by segment, and other factors as warranted. Loans are initially graded when originated. They are re-graded as they are renewed, when there is a new loan to the same borrower, when identified facts demonstrate heightened risk of nonpayment, or if they become delinquent. Re-grading of larger problem loans occurs at least quarterly. Confirmation of the quality of the grading process is obtained by independent credit reviews conducted by consultants specifically hired for this purpose and by various bank regulatory agencies. The Company’s method for assessing the appropriateness of the allowance for originated loan losses includes specific allowances for impaired originated loans, formula allowance factors for pools of credits, and allowances for changing environmental factors (e.g., interest rates, growth, economic conditions, etc.). Allowance factors for loan pools were based on historical loss experience by product type and prior risk rating. During the three months ended March 31, 2014, the Company modified its methodology used to determine the allowance for changing environmental factors by adding a new environmental factor based on the California Home Affordability Index (“CHAI”). The CHAI measures the percentage of households in California that can afford to purchase the median priced home in California based on current home prices and mortgage interest rates. The use of the CHAI environmental factor consists of comparing the current CHAI to its historical baseline, and allows management to consider the adverse impact that a lower than historical CHAI may have on general economic activity and the performance of our borrowers. Based on an analysis of historical data, management believes this environmental factor gives a better estimate of current economic activity compared to other environmental factors that may lag current economic activity to some extent. This change in methodology resulted in no change to the allowance for loan losses as of March 31, 2014 compared to what it would have been without this change in methodology. During the three months ended June 30, 2014, the Company refined the method it uses to evaluate historical losses for the purpose of estimating the pool allowance for unimpaired loans. In the third quarter of 2010, the Company moved from a six point grading system (Grades A-F) to a nine point risk rating system (Risk Ratings 1-9), primarily to allow for more distinction within the “Pass” risk rating. Initially, there was not sufficient loss experience within the nine point scale to complete a migration analysis for all nine risk ratings, all loans risk rated Pass or 2-5 were grouped together, a loss rate was calculated for that group, and that loss rate was established as the loss rate for risk rating 4. The reserve ratios for risk ratings 2, 3 and 5 were then interpolated from that figure. As of June 30, 2014, the Company was able to compile twelve quarters of historical loss information for all risk ratings and use that information to calculate the loss rates for each of the nine risk ratings without interpolation. This refinement led to an increase of $1,438,000 in the reserve requirement for unimpaired loans, driven primarily by home equity lines of credit with a risk rating of 5 or “Pass-Watch.” Loans purchased or acquired in a business combination are referred to as acquired loans. Acquired loans are valued as of the acquisition date in accordance with Financial Accounting Standards Board Accounting Standards Codification (“FASB ASC”) Topic 805, Business Combinations Loans and Debt Securities Acquired with Deteriorated Credit Quality Acquired loans that are not PCI loans are referred to as purchased not credit impaired (PNCI) loans. PNCI loans are accounted for under FASB ASC Topic 310-20, Receivables – Nonrefundable Fees and Other Costs, Throughout these financial statements, and in particular in Note 4 and Note 5, when we refer to “Loans” or “Allowance for loan losses” we mean all categories of loans, including Originated, PNCI, PCI – cash basis, and PCI - other. When we are not referring to all categories of loans, we will indicate which we are referring to – Originated, PNCI, PCI – cash basis, or PCI - other. When referring to PNCI and PCI loans we use the terms “nonaccretable difference”, “accretable yield”, or “purchase discount”. Nonaccretable difference is the difference between undiscounted contractual cash flows due and undiscounted cash flows we expect to collect, or put another way, it is the undiscounted contractual cash flows we do not expect to collect. Accretable yield is the difference between undiscounted cash flows we expect to collect and the value at which we have recorded the loan on our financial statements. On the date of acquisition, all purchased loans are recorded on our consolidated financial statements at estimated fair value. Purchase discount is the difference between the estimated fair value of loans on the date of acquisition and the principal amount owed by the borrower, net of charge offs, on the date of acquisition. We may also refer to “discounts to principal balance of loans owed, net of charge-offs”. Discounts to principal balance of loans owed, net of charge-offs is the difference between principal balance of loans owed, net of charge-offs, and loans as recorded on our financial statements. Discounts to principal balance of loans owed, net of charge-offs arise from purchase discounts, and equal the purchase discount on the acquisition date. Loans are also categorized as “covered” or “noncovered”. Covered loans refer to loans covered by a Federal Deposit Insurance Corporation (“FDIC”) loss sharing agreement. Noncovered loans refer to loans not covered by a FDIC loss sharing agreement.
Foreclosed Assets	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 less estimated costs to sell at the date of foreclosure, establishing a new cost basis. 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. 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. Revenue and expenses from operations and changes in the valuation allowance are included in other noninterest expense. Gain or loss on sale of foreclosed assets is included in noninterest income. Foreclosed assets that are not subject to a FDIC loss-share agreement are referred to as noncovered foreclosed assets. Foreclosed assets acquired through FDIC-assisted acquisitions that are subject to a FDIC loss-share agreement, and all assets acquired via foreclosure of covered loans are referred to as covered foreclosed assets. Covered foreclosed assets are reported exclusive of expected reimbursement cash flows from the FDIC. Foreclosed covered loan collateral is transferred into covered foreclosed assets at the loan’s carrying value, inclusive of the acquisition date fair value discount. Covered foreclosed assets are initially recorded at estimated fair value less estimated costs to sell on the acquisition date based on similar market comparable valuations less estimated selling costs. Any subsequent valuation adjustments due to declines in fair value will be charged to noninterest expense, and will be mostly offset by noninterest income representing the corresponding increase to the FDIC indemnification asset for the offsetting loss reimbursement amount. Any recoveries of previous valuation adjustments will be credited to noninterest expense with a corresponding charge to noninterest income for the portion of the recovery that is due to the FDIC.
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 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.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill represents the excess of costs over fair value of net assets of businesses acquired. Goodwill and other intangible assets acquired in a purchase business combination and determined to have an indefinite useful life are not amortized, but instead tested for impairment at least annually. Intangible assets with estimable useful lives are amortized over their respective estimated useful lives to their estimated residual values, and reviewed for impairment. The Company has an identifiable intangible asset consisting of core deposit intangibles (CDI). CDI are amortized over their respective estimated useful lives, and reviewed for impairment.
Impairment of Long-Lived Assets and Goodwill	Impairment of Long-Lived Assets and Goodwill 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. As of December 31 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. This determination is made at the reporting unit level. The Company may choose to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, the Company determines it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then goodwill is deemed not to be impaired. However, if the Company concludes otherwise, or if the Company elected not to first assess qualitative factors, then the Company performs the first step of a two-step impairment test by calculating the fair value of the reporting unit and comparing the fair value with the carrying amount of the reporting unit. Second, if the carrying amount of the reporting unit exceeds its fair value, an impairment loss is recognized for any excess of the carrying amount of the reporting unit’s goodwill over the implied fair value of that goodwill. The implied fair value of goodwill is determined by allocating the fair value of the reporting unit in a manner similar to a purchase price allocation. The residual fair value after this allocation is the implied fair value of the reporting unit goodwill. Currently, and historically, the Company is comprised of only one reporting unit that operates within the business segment it has identified as “community banking”. Goodwill was not impaired as of December 31, 2014 because the fair value of the reporting unit exceeded its carrying value.
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 noninterest 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 are recorded in noninterest income when earned. 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. The Company uses an independent third party to determine fair value of MSR.
Indemnification Asset/Liability	Indemnification Asset/Liability The Company accounts for amounts receivable or payable under its loss-share agreements entered into with the FDIC in connection with its purchase and assumption of certain assets and liabilities of Granite as indemnification assets in accordance with FASB ASC Topic 805, Business Combinations
Reserve for Unfunded Commitments	Reserve for Unfunded Commitments The reserve for unfunded commitments is established through a provision for losses – unfunded commitments charged to noninterest expense. The reserve for unfunded commitments is an amount that Management believes will be adequate to absorb probable losses inherent in existing commitments, including unused portions of revolving lines of credits and other loans, standby letters of credits, and unused deposit account overdraft privilege. The reserve for unfunded commitments is based on evaluations of the collectability, and prior loss experience of unfunded commitments. The evaluations take into consideration such factors as changes in the nature and size of the loan portfolio, overall loan portfolio quality, loan concentrations, specific problem loans and related unfunded commitments, and current economic conditions that may affect the borrower’s or depositor’s ability to pay.
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. Interest and/or penalties related to income taxes are reported as a component of noninterest income.
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.
Geographical Descriptions	Geographical Descriptions For the purpose of describing the geographical location of the Company’s loans, the Company has defined northern California as that area of California north of, and including, Stockton; central California as that area of the state south of Stockton, to and including, Bakersfield; and southern California as that area of the state south of Bakersfield.
Reclassifications	Reclassifications Certain amounts reported in previous consolidated financial statements have been reclassified to conform to the presentation in this report. These reclassifications did not affect previously reported net income or total shareholders’ equity.
Recent Accounting Pronouncements	Recent Accounting Pronouncements FASB issued ASU No. 2014-04, Receivables (Topic 310): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure. FASB issued ASU No. 2014-08, Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity. FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). FASB issued ASU No. 2014-11, Transfers and Servicing (Topic 860): Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures. FASB issued ASU No. 2014-12, Compensation—Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved After the Requisite Service Period. FASB issued ASU No. 2014-14, Receivables—Troubled Debt Restructurings by Creditors (Topic 310): Classification of Certain Government Mortgage Loans upon Foreclosure.

Business Combinations (Tables)

Business Combinations (Tables)	6 Months Ended
	Jun. 30, 2015
Summary of Principal Balance Loans Acquired	The following table presents a reconciliation of the undiscounted contractual cash flows, nonaccretable difference, accretable yield, fair value, purchase discount, and principal balance of loans for the PNCI and PCI - other categories of North Valley Bancorp loans as of the acquisition date. For North Valley Bancorp PCI – other loans, the purchase discount does not necessarily represent cash flows to be collected: North Valley Bancorp Loans – October 3, 2014 (in thousands) PNCI PCI - other Total Undiscounted contractual cash flows $ 718,731 $ 15,706 $ 734,437 Undiscounted cash flows not expected to be collected (nonaccretable difference) — (6,295 ) (6,295 ) Undiscounted cash flows expected to be collected 718,731 9,411 728,142 Accretable yield at acquisition (228,815 ) — (228,815 ) Estimated fair value of loans acquired at acquisition 489,916 9,411 499,327 Purchase discount 12,721 2,077 14,798 Principal balance loans acquired $ 502,637 $ 11,488 $ 514,125
North Valley Bancorp [Member]
Schedule of Fair Value of Consideration Transferred, Identifiable Net Assets Acquired and Resulting Goodwill	The following table discloses the calculation of the fair value of consideration transferred, the total identifiable net assets acquired and the resulting goodwill relating to the North Valley Bancorp acquisition: (in thousands) North Valley Bancorp Fair value of consideration transferred: Fair value of shares issued $ 151,303 Cash consideration 7 Total fair value of consideration transferred 151,310 Asset acquired: Cash and cash equivalents 141,412 Securities available for sale 17,288 Securities held to maturity 189,950 Restricted equity securities 5,378 Loans 499,327 Foreclosed assets 695 Premises and equipment 11,936 Cash value of life insurance 38,075 Core deposit intangible 6,614 Other assets 20,064 Total assets acquired 930,739 Liabilities assumed: Deposits 801,956 Other liabilities 10,429 Junior subordinated debt 14,987 Total liabilities assumed 827,372 Total net assets acquired 103,367 Goodwill recognized $ 47,943
Summary of Estimated Fair Value Adjustments Resulting In Goodwill	A summary of the estimated fair value adjustments resulting in the goodwill recorded in the North Valley Bancorp acquisition are presented below: (in thousands) North Valley Bancorp Value of stock consideration paid to North Valley Bancorp Shareholders $ 151,303 Cash payments to North Valley Bancorp Shareholders 7 Cost basis net assets acquired (98,040 ) Fair value adjustments: Loans 5,832 Premises and Equipment (4,785 ) Core deposit intangible (6,283 ) Deferred income taxes 6,293 Junior subordinated debt (6,664 ) Other 280 Goodwill $ 47,943
Schedule of Cost Basis, Fair Value Discount and loan Acquired	The following table presents the cost basis, fair value discount, and fair value of loans acquired from North Valley Bancorp on October 3, 2014: North Valley Bancorp Acquired Loans (in thousands) Cost Basis Discount Fair Value PNCI $ 502,637 $ (12,721 ) $ 489,916 PCI – other 11,488 (2,077 ) 9,411 Total $ 514,125 $ (14,798 ) $ 499,327

Investment Securities (Tables)

Investment Securities (Tables)	6 Months Ended
	Jun. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Amortized Cost and Estimated Fair Values of Investments in Debt and Equity Securities	The amortized cost and estimated fair values of investments in debt and equity securities are summarized in the following tables: June 30, 2015 Amortized Gross Gross Estimated (in thousands) Securities Available for Sale Obligations of U.S. government corporations and agencies $ 239,762 $ 3,325 $ (2,535 ) $ 240,552 Obligations of states and political subdivisions 40,467 23 (1,503 ) 38,987 Corporate debt securities 1,898 2 — 1,900 Marketable equity securities 3,000 — (9 ) 2,991 Total securities available for sale $ 285,127 $ 3,350 $ (4,047 ) $ 284,430 Securities Held to Maturity Obligations of U.S. government corporations and agencies $ 760,686 $ 6,966 $ (4,113 ) $ 763,539 Obligations of states and political subdivisions 15,597 5 (444 ) 15,158 Total securities held to maturity $ 776,283 $ 6,971 $ (4,557 ) $ 778,697 December 31, 2014 Amortized Gross Gross Estimated (in thousands) Securities Available for Sale Obligations of U.S. government corporations and agencies $ 71,144 $ 4,001 $ (25 ) $ 75,120 Obligations of states and political subdivisions 3,130 45 — 3,175 Corporate debt securities 1,891 17 — 1,908 Marketable equity securities 3,000 2 — 3,002 Total securities available for sale $ 79,165 $ 4,065 $ (25 ) $ 83,205 Securities Held to Maturity Obligations of U.S. government corporations and agencies $ 660,836 $ 13,055 $ (677 ) $ 673,214 Obligations of states and political subdivisions 15,590 130 (155 ) 15,565 Total securities held to maturity $ 676,426 $ 13,185 $ (832 ) $ 688,779
Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity	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. Investment Securities Available for Sale Held to Maturity (In thousands) Amortized Estimated Amortized Estimated Due in one year $ 1,898 $ 1,900 — — Due after one year through five years 3,621 3,767 — — Due after five years through ten years 28,202 29,476 $ 1,132 $ 1,134 Due after ten years 251,406 249,287 775,151 777,563 Totals $ 285,127 $ 284,430 $ 776,283 $ 778,697
Gross Unrealized Losses on Investment	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 (in thousands) June 30, 2015 Securities Available for Sale: Obligations of U.S. government corporations and agencies $ 181,914 $ (2,535 ) — — $ 181,914 $ (2,535 ) Obligations of states and political subdivisions 36,854 (1,503 ) — — 36,854 (1,503 ) Corporate debt securities — — — — — — Marketable equity securities 2,991 (9 ) — — 2,991 (9 ) Total securities available-for-sale $ 221,759 $ (4,047 ) — — $ 221,759 $ (4,047 ) Securities Held to Maturity: Obligations of U.S. government corporations and agencies $ 333,283 $ (4,113 ) — — $ 333,283 $ (4,113 ) Obligations of states and political subdivisions 11,903 (274 ) $ 1,049 $ (170 ) 12,952 (444 ) Corporate debt securities — — — — — — Total securities held-to-maturity $ 345,186 $ (4,387 ) $ 1,049 $ (170 ) $ 346,235 $ (4,557 ) Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized (in thousands) December 31, 2014 Securities Available for Sale: Obligations of U.S. government corporations and agencies $ 6,774 $ (25 ) — — $ 6,774 $ (25 ) Obligations of states and political subdivisions — — — — — — Corporate debt securities — — — — — — Marketable equity securities — — — — — — Total securities available-for-sale $ 6,774 $ (25 ) — — $ 6,774 $ (25 ) Securities Held to Maturity: Obligations of U.S. government corporations and agencies $ 335 $ (1 ) $ 56,288 $ (676 ) $ 56,623 $ (677 ) Obligations of states and political subdivisions 1,600 (26 ) 1,858 (129 ) 3,458 (155 ) Corporate debt securities — — — — — — Total securities held-to-maturity $ 1,935 $ (27 ) $ 58,146 $ (805 ) $ 60,081 $ (832 )

Loans (Tables)

Loans (Tables)	6 Months Ended
	Jun. 30, 2015
Receivables [Abstract]
Summary of Loan Balances	A summary of loan balances follows (in thousands): June 30, 2015 Originated PNCI PCI - PCI - Total Mortgage loans on real estate: Residential 1-4 family $ 173,623 $ 113,991 — $ 3,874 $ 291,488 Commercial 1,019,050 348,508 — 27,521 1,395,079 Total mortgage loan on real estate 1,192,673 462,499 — 31,395 1,686,567 Consumer: Home equity lines of credit 301,696 34,227 5,269 2,923 344,115 Home equity loans 29,223 4,587 125 637 34,572 Auto Indirect — — — — — Other 29,057 3,977 — 67 33,101 Total consumer loans 359,976 42,791 5,394 3,627 411,788 Commercial 157,283 33,407 4 5,097 195,791 Construction: Residential 26,283 14,952 — 723 41,958 Commercial 43,526 14,132 — — 57,658 Total construction 69,809 29,084 — 723 99,616 Total loans, net of deferred loan fees and discounts $ 1,779,741 $ 567,781 $ 5,398 $ 40,842 $ 2,393,762 Total principal balance of loans owed, net of charge-offs $ 1,784,505 $ 583,746 $ 13,865 $ 47,806 $ 2,429,922 Unamortized net deferred loan fees (4,764 ) — — — (4,764 ) Discounts to principal balance of loans owed, net of charge-offs — (15,965 ) (8,467 ) (6,964 ) (31,396 ) Total loans, net of unamortized deferred loan fees and discounts $ 1,779,741 $ 567,781 $ 5,398 $ 40,842 $ 2,393,762 Noncovered loans $ 1,779,741 $ 567,781 $ 5,398 $ 35,324 $ 2,388,244 Covered loans — — — 5,518 5,518 Total loans, net of unamortized deferred loan fees and discounts $ 1,779,741 $ 567,781 $ 5,398 $ 40,842 $ 2,393,762 Allowance for loan losses $ 29,470 $ 2,763 $ 312 $ 2,910 $ 35,455 A summary of loan balances follows (in thousands): December 31, 2014 Originated PNCI PCI - PCI - Total Mortgage loans on real estate: Residential 1-4 family $ 154,594 $ 120,821 — $ 4,005 $ 279,420 Commercial 928,797 376,225 — 30,917 1,335,939 Total mortgage loan on real estate 1,083,391 497,046 — 34,922 1,615,359 Consumer: Home equity lines of credit 305,166 38,397 $ 5,478 3,543 352,584 Home equity loans 23,559 6,985 125 645 31,314 Auto Indirect 112 — — — 112 Other 28,230 4,770 — 74 33,074 Total consumer loans 357,067 50,152 5,603 4,262 417,084 Commercial 126,611 40,899 8 7,427 174,945 Construction: Residential 21,135 16,808 — 675 38,618 Commercial 24,545 11,973 — — 36,518 Total construction 45,680 28,781 — 675 75,136 Total loans, net of deferred loan fees and discounts $ 1,612,749 $ 616,878 $ 5,611 $ 47,286 $ 2,282,524 Total principal balance of loans owed, net of charge-offs $ 1,617,542 $ 634,490 $ 14,805 $ 56,016 $ 2,322,853 Unamortized net deferred loan fees (4,793 ) — — — (4,793 ) Discounts to principal balance of loans owed, net of charge-offs — (17,612 ) (9,194 ) (8,730 ) (35,536 ) Total loans, net of unamortized deferred loan fees and discounts $ 1,612,749 $ 616,878 $ 5,611 $ 47,286 $ 2,282,524 Noncovered loans $ 1,612,749 $ 616,878 $ 5,611 $ 25,018 $ 2,260,256 Covered loans — — — 22,268 22,268 Total loans, net of unamortized deferred loan fees and discounts $ 1,612,749 $ 616,878 $ 5,611 $ 47,286 $ 2,282,524 Allowance for loan losses $ (29,860 ) $ (3,296 ) $ (348 ) $ (3,081 ) $ (36,585 )
Change in Accretable Yield for PCI	The following is a summary of the change in accretable yield for PCI – other loans during the periods indicated (in thousands): Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 Change in accretable yield: Balance at beginning of period $ 13,402 $ 17,438 $ 14,159 $ 18,232 Accretion to interest income (1,375 ) (1,382 ) (2,930 ) (3,013 ) Reclassification from nonaccretable difference 920 242 1,718 1,079 Balance at end of period $ 12,947 $ 16,298 $ 12,947 $ 16,298

Allowance for Loan Losses (Tabl

Allowance for Loan Losses (Tables)	6 Months Ended
	Jun. 30, 2015
Receivables [Abstract]
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 loan losses, and ending balance of loans, net of unearned fees for the periods indicated. Allowance for Loan Losses – Three Months Ended June 30, 2015 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Beginning balance $ 2,765 $ 10,451 $ 15,233 $ 1,980 $ 6 $ 644 $ 3,976 $ 750 $ 250 $ 36,055 Charge-offs (128 ) — (84 ) (117 ) (4 ) (176 ) (5 ) — — (514 ) Recoveries — 53 230 6 16 107 121 — 14 547 (Benefit) provision 198 (363 ) (1,386 ) 259 (18 ) 130 310 92 145 (633 ) Ending balance $ 2,835 $ 10,141 $ 13,993 $ 2,128 — $ 705 $ 4,402 $ 842 $ 409 $ 35,455 Allowance for Loan Losses – Six Months Ended June 30, 2015 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Beginning balance $ 3,086 $ 9,227 $ 15,676 $ 1,797 $ 9 $ 719 $ 4,226 $ 1,434 $ 411 $ 36,585 Charge-offs (209 ) — (425 ) (128 ) (4 ) (444 ) (539 ) — — (1,749 ) Recoveries 1 149 349 9 36 259 208 11 33 1,055 (Benefit) provision (43 ) 765 (1,607 ) 450 (41 ) 171 507 (603 ) (35 ) (436 ) Ending balance $ 2,835 $ 10,141 $ 13,993 $ 2,128 — $ 705 $ 4,402 $ 842 $ 409 $ 35,455 Ending balance: Individ. evaluated for impairment $ 857 $ 418 $ 1,779 $ 387 — $ 128 $ 676 — — $ 4,245 Loans pooled for evaluation $ 1,884 $ 8,390 $ 11,798 $ 1,741 — $ 577 $ 2,536 $ 653 $ 409 $ 27,988 Loans acquired with deteriorated credit quality $ 94 $ 1,333 $ 416 — — — $ 1,190 $ 189 — $ 3,222 Loans, net of unearned fees – As of June 30, 2015 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Ending balance: Total loans $ 291,488 $ 1,395,079 $ 344,115 $ 34,572 — $ 33,101 $ 195,791 $ 41,958 $ 57,658 $ 2,393,762 Individ. evaluated for impairment $ 7,467 $ 47,118 $ 6,135 $ 1,438 — $ 403 $ 2,048 $ 328 $ 88 $ 65,025 Loans pooled for evaluation $ 280,147 $ 1,320,440 $ 329,788 $ 32,372 — $ 32,631 $ 188,642 $ 40,907 $ 57,570 $ 2,282,497 Loans acquired with deteriorated credit quality $ 3,874 $ 27,521 $ 8,192 $ 762 — $ 67 $ 5,101 $ 723 — $ 46,240 Allowance for Loan Losses – Year Ended December 31, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Beginning balance $ 3,154 $ 9,700 $ 16,375 $ 1,208 $ 66 $ 589 $ 4,331 $ 1,559 $ 1,263 $ 38,245 Charge-offs (171 ) (110 ) (1,094 ) (29 ) (3 ) (599 ) (479 ) (4 ) (69 ) (2,558 ) Recoveries 2 540 960 34 86 495 1,268 1,377 181 4,943 (Benefit) provision 101 (903 ) (565 ) 584 (140 ) 234 (894 ) (1,498 ) (964 ) (4,045 ) Ending balance $ 3,086 $ 9,227 $ 15,676 $ 1,797 $ 9 $ 719 $ 4,226 $ 1,434 $ 411 $ 36,585 Ending balance: Individ. evaluated for impairment $ 974 $ 410 $ 1,974 $ 284 — $ 142 $ 423 $ 60 — $ 4,267 Loans pooled for evaluation $ 1,915 $ 8,408 $ 13,251 $ 1,513 $ 9 $ 572 $ 2,569 $ 332 $ 322 $ 28,891 Loans acquired with deteriorated credit quality $ 197 $ 409 $ 451 — — $ 5 $ 1,234 $ 1,042 $ 89 $ 3,427 Loans, net of unearned fees – As of December 31, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Ending balance: Total loans $ 279,420 $ 1,335,939 $ 352,584 $ 31,314 $ 112 $ 33,074 $ 174,945 $ 38,618 $ 35,518 $ 2,282,524 Individ. evaluated for impairment $ 7,188 $ 41,932 $ 6,968 $ 1,278 $ 18 $ 323 $ 1,757 $ 2,683 $ 99 $ 62,246 Loans pooled for evaluation $ 268,227 $ 1,263,090 $ 336,595 $ 29,266 $ 94 $ 32,677 $ 165,753 $ 35,260 $ 36,419 $ 2,167,381 Loans acquired with deteriorated credit quality $ 4,005 $ 30,917 $ 9,021 $ 770 — $ 74 $ 7,435 $ 675 — $ 52,897 Allowance for Loan Losses – Three Months Ended June 30, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Beginning balance $ 2,980 $ 9,875 $ 16,366 $ 1,291 $ 45 $ 590 $ 4,136 $ 1,501 $ 1,538 $ 38,322 Charge-offs (1 ) (45 ) (677 ) (11 ) — (144 ) (151 ) — — (1,029 ) Recoveries — 299 180 25 39 119 188 97 20 967 (Benefit) provision (147 ) (298 ) 2,186 106 (56 ) (9 ) 234 (87 ) (221 ) 1,708 Ending balance $ 2,832 $ 9,831 $ 18,055 $ 1,411 $ 28 $ 556 $ 4,407 $ 1,511 $ 1,337 $ 39,968 Allowance for Loan Losses – Six Months Ended June 30, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Beginning balance $ 3,154 $ 9,700 $ 16,375 $ 1,208 $ 66 $ 589 $ 4,331 $ 1,559 $ 1,263 $ 38,245 Charge-offs (136 ) (58 ) (855 ) (11 ) — (271 ) (390 ) (4 ) (69 ) (1,794 ) Recoveries — 471 509 27 51 302 1,061 608 135 3,164 (Benefit) provision (186 ) (282 ) 2,026 187 (89 ) (64 ) (595 ) (652 ) 8 353 Ending balance $ 2,832 $ 9,831 $ 18,055 $ 1,411 $ 28 $ 556 $ 4,407 $ 1,511 $ 1,337 $ 39,968 Ending balance: Individ. evaluated for impairment $ 780 $ 392 $ 2,088 $ 211 — $ 3 $ 405 $ 61 — $ 3,940 Loans pooled for evaluation $ 1,869 $ 8,605 $ 15,466 $ 1,199 $ 27 $ 553 $ 2,534 $ 720 $ 779 $ 31,752 Loans acquired with deteriorated credit quality $ 185 $ 835 $ 499 — — — $ 1,469 $ 730 $ 558 $ 4,276 Loans, net of unearned fees – As of June 30, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Ending balance: Total loans $ 212,920 $ 954,936 $ 330,187 $ 17,895 $ 385 $ 28,676 $ 137,341 $ 42,097 $ 14,149 $ 1,738,586 Individ. evaluated for impairment $ 7,397 $ 52,570 $ 6,987 $ 871 $ 40 $ 77 $ 2,159 $ 2,751 $ 16 $ 72,868 Loans pooled for evaluation $ 201,680 $ 872,399 $ 313,843 $ 16,412 $ 345 $ 28,529 $ 129,207 $ 37,844 $ 14,068 $ 1,614,327 Loans acquired with deteriorated credit quality $ 3,843 $ 29,967 $ 9,357 $ 612 — $ 70 $ 5,975 $ 1,502 $ 65 $ 51,391
Presentation of Credit Quality Indicators	The following tables present ending loan balances by loan category and risk grade for the periods indicated: Credit Quality Indicators – As of June 30, 2015 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Originated loans: Pass $ 165,857 $ 977,037 $ 290,529 $ 26,015 — $ 28,341 $ 155,985 $ 25,575 $ 42,852 $ 1,712,191 Special mention 1,311 10,479 3,046 1,160 — 461 854 661 585 18,557 Substandard 6,455 31,534 8,121 2,048 — 255 444 47 89 48,993 Total originated $ 173,623 $ 1,019,050 $ 301,696 $ 29,223 — $ 29,057 $ 157,283 $ 26,283 $ 43,526 $ 1,779,741 PNCI loans: Pass $ 112,680 $ 327,833 $ 32,392 $ 4,344 — $ 3,670 $ 32,100 $ 14,952 $ 14,132 $ 542,103 Special mention 346 13,337 452 101 — 88 — — — 14,324 Substandard 965 7,338 1,383 142 — 219 1,307 — — 11,354 Total PNCI $ 113,991 $ 348,508 $ 34,227 $ 4,587 — $ 3,977 33,407 $ 14,952 $ 14,132 $ 567,781 PCI loans $ 3,874 $ 27,521 $ 8,192 $ 762 — $ 67 $ 5,101 $ 723 — $ 46,240 Total loans $ 291,488 $ 1,395,079 $ 344,115 $ 34,572 — $ 33,101 $ 195,791 $ 41,958 $ 57,658 $ 2,393,762 Credit Quality Indicators – As of December 31, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Originated loans: Pass $ 146,949 $ 883,102 $ 292,244 $ 20,976 $ 66 $ 27,396 $ 124,707 $ 18,112 $ 24,436 $ 1,537,988 Special mention 1,122 11,521 3,590 743 11 591 636 622 — 18,836 Substandard 6,523 34,174 9,332 1,840 35 243 1,268 2,401 109 55,925 Total originated $ 154,594 $ 928,797 $ 305,166 $ 23,559 $ 112 $ 28,230 $ 126,611 $ 21,135 $ 24,545 $ 1,612,749 PNCI loans: Pass $ 119,643 $ 359,537 $ 36,531 $ 6,813 — $ 4,399 $ 40,628 $ 16,808 $ 11,973 $ 596,332 Special mention 547 12,979 936 147 — 230 268 — — 15,107 Substandard 631 3,709 930 25 — 141 3 — — 5,439 Total PNCI $ 120,821 $ 376,225 $ 38,397 $ 6,985 — $ 4,770 $ 40,899 $ 16,808 $ 11,973 $ 616,878 PCI loans $ 4,005 $ 30,917 $ 9,021 $ 770 — $ 74 $ 7,435 $ 675 — $ 52,897 Total loans $ 279,420 $ 1,335,939 $ 352,584 $ 31,314 $ 112 $ 33,074 $ 174,945 $ 38,618 $ 36,518 $ 2,282,524
Analysis of Past Due and Nonaccrual Loans	The following table shows the ending balance of current, past due, and nonaccrual originated loans by loan category as of the date indicated: Analysis of Past Due and Nonaccrual Originated Loans – As of June 30, 2015 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Originated loan balance: Past due: 30-59 Days $ 256 $ 589 $ 867 $ 514 — $ 44 $ 589 $ 407 — $ 3,266 60-89 Days 375 2,874 488 166 — 2 — — — 3,905 > 90 Days 653 711 466 348 — 57 76 14 — 2,325 Total past due $ 1,284 $ 4,174 $ 1,821 $ 1,028 — $ 103 $ 665 $ 421 — $ 9,496 Current 172,339 1,014,876 299,875 28,195 — 28,954 156,618 25,862 $ 43,526 1,770,245 Total orig. loans $ 173,623 $ 1,019,050 $ 301,696 $ 29,223 — $ 29,057 $ 157,283 $ 26,283 $ 43,526 $ 1,779,741 > 90 Days and still accruing — — — — — — — — — — Nonaccrual loans $ 3,914 $ 14,957 $ 3,246 $ 1,262 — $ 60 $ 238 $ 47 $ 88 $ 23,812 The following table shows the ending balance of current, past due, and nonaccrual PNCI loans by loan category as of the date indicated: Analysis of Past Due and Nonaccrual PNCI Loans – As of June 30, 2015 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total PNCI loan balance: Past due: 30-59 Days — $ 883 — $ 42 — $ 9 — — — $ 934 60-89 Days — — $ 271 — — 92 — — — 363 > 90 Days $ 33 466 260 — — 98 — — — 857 Total past due $ 33 $ 1,349 $ 531 $ 42 — $ 199 — — — $ 2,154 Current 113,958 347,159 33,696 4,545 — 3,778 $ 33,407 $ 14,952 $ 14,132 565,627 Total PNCI loans $ 113,991 $ 348,508 $ 34,227 $ 4,587 — $ 3,977 $ 33,407 $ 14,952 $ 14,132 $ 567,781 > 90 Days and still accruing — — — — — — — — — — Nonaccrual loans $ 622 $ 4,316 $ 733 $ 61 — $ 131 — — — $ 5,863 The following table shows the ending balance of current, past due, and nonaccrual originated loans by loan category as of the date indicated: Analysis of Past Due and Nonaccrual Originated Loans – As of December 31, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Originated loan balance: Past due: 30-59 Days $ 1,296 $ 735 $ 2,066 $ 615 $ 4 $ 64 $ 739 — — $ 5,519 60-89 Days 919 — 296 192 — 24 99 — — 1,530 > 90 Days 100 900 754 202 17 46 61 — — 2,080 Total past due $ 2,315 $ 1,635 $ 3,116 $ 1,009 $ 21 $ 134 $ 899 — — $ 9,129 Current 152,279 927,162 302,050 22,550 91 28,096 125,712 $ 21,135 $ 24,545 1,603,620 Total orig. loans $ 154,594 $ 928,797 $ 305,166 $ 23,559 $ 112 $ 28,230 $ 126,611 $ 21,135 $ 24,545 $ 1,612,749 > 90 Days and still accruing — — — — — — — — — — Nonaccrual loans $ 3,430 $ 20,736 $ 4,336 $ 1,197 $ 18 $ 66 $ 246 $ 2,401 $ 99 $ 32,529 The following table shows the ending balance of current, past due, and nonaccrual PNCI loans by loan category as of the date indicated: Analysis of Past Due and Nonaccrual PNCI Loans – As of December 31, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total PNCI loan balance: Past due: 30-59 Days $ 2,041 $ 260 $ 275 — — $ 25 $ 67 — — $ 2,668 60-89 Days 24 — 118 — — 3 — — — 145 > 90 Days 239 — 73 $ 25 — 76 — — — 413 Total past due $ 2,304 $ 260 $ 466 $ 25 — $ 104 $ 67 — — $ 3,226 Current 118,517 375,965 37,931 6,960 — 4,666 40,832 $ 16,808 $ 11,973 613,652 Total PNCI loans $ 120,821 $ 376,225 $ 38,397 $ 6,985 — $ 4,770 $ 40,899 $ 16,808 $ 11,973 $ 616,878 > 90 Days and still accruing — — — — — — — — — — Nonaccrual loans $ 799 $ 366 $ 346 $ 25 — $ 110 — — — $ 1,646
Impaired Loans	Impaired originated loans are those where management has concluded that it is probable that the borrower will be unable to pay all amounts due under the contractual terms. The following tables show the recorded investment (financial statement balance), unpaid principal balance, average recorded investment, and interest income recognized for impaired Originated and PNCI loans, segregated by those with no related allowance recorded and those with an allowance recorded for the periods indicated. Impaired Originated Loans – As of, or for the Six Months Ended, June 30, 2015 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total With no related allowance recorded: Recorded investment $ 3,770 $ 40,294 $ 2,475 $ 779 — $ 23 $ 338 $ 328 $ 88 $ 48,095 Unpaid principal $ 5,901 $ 44,441 $ 5,340 $ 1,256 — $ 46 $ 366 $ 376 $ 183 $ 57,909 Average recorded Investment $ 3,528 $ 39,385 2,738 $ 764 — $ 31 $ 375 $ 1,364 $ 94 $ 48,279 Interest income Recognized $ 19 $ 795 $ 2 — — — $ 11 $ 9 — $ 836 With an allowance recorded: Recorded investment $ 2,780 $ 2,365 $ 2,513 $ 598 — $ 37 $ 1,706 — — $ 9,999 Unpaid principal $ 2,958 $ 2,448 $ 2,973 $ 704 — $ 47 $ 1,808 — — $ 10,938 Related allowance $ 784 $ 216 $ 1,481 $ 346 — $ 15 $ 676 — — $ 3,518 Average recorded Investment $ 2,752 $ 2,654 $ 2,849 $ 551 — $ 41 $ 1,522 $ 141 — $ 10,510 Interest income Recognized $ 40 $ 56 $ 25 $ 3 — — $ 42 — — $ 166 Impaired PNCI Loans – As of, or for the Six Months Ended, June 30, 2015 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total With no related allowance recorded: Recorded investment $ 290 $ 3,633 $ 637 $ 20 — $ 42 $ 4 — — $ 4,626 Unpaid principal $ 316 $ 3,713 $ 696 $ 22 — $ 62 $ 4 — — $ 4,813 Average recorded Investment $ 317 $ 1,999 $ 492 $ 22 — $ 40 $ 5 — — $ 2,875 Interest income Recognized $ 3 $ 74 $ 1 — — — — — — $ 78 With an allowance recorded: Recorded investment $ 627 $ 826 $ 511 $ 41 — $ 301 — — — $ 2,306 Unpaid principal $ 643 $ 836 $ 512 $ 42 — $ 301 — — — $ 2,334 Related allowance $ 72 $ 203 $ 298 $ 41 — $ 113 — — — $ 727 Average recorded Investment $ 731 $ 486 $ 474 $ 20 — $ 261 — — — $ 1,972 Interest income Recognized $ 4 $ 12 $ 9 — — $ 6 — — — $ 31 Impaired Originated Loans – As of December 31, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total With no related allowance recorded: Recorded investment $ 3,287 $ 38,477 $ 3,001 $ 750 $ 14 $ 25 $ 412 $ 2,401 $ 99 $ 48,466 Unpaid principal $ 5,138 $ 41,949 $ 6,094 $ 1,187 $ 49 $ 32 $ 433 $ 6,588 $ 190 $ 61,660 Average recorded Investment $ 3,826 $ 45,915 $ 3,355 $ 651 $ 35 $ 21 $ 1,030 $ 2,437 $ 84 $ 57,354 Interest income Recognized $ 38 $ 995 $ 26 $ 6 — $ 1 $ 26 — $ 3 $ 1,095 With an allowance recorded: Recorded investment $ 2,724 $ 2,943 $ 3,185 $ 504 $ 4 $ 41 $ 1,338 $ 282 — $ 11,021 Unpaid principal $ 2,865 $ 3,101 $ 3,533 $ 597 $ 6 $ 41 $ 1,438 $ 282 — $ 11,863 Related allowance $ 797 $ 302 $ 1,769 $ 284 — $ 11 $ 423 $ 60 — $ 3,646 Average recorded Investment $ 2,677 $ 4,119 $ 2,982 $ 365 $ 4 $ 25 $ 1,428 $ 283 $ 55 $ 11,938 Interest income Recognized $ 91 $ 144 $ 71 $ 13 — — $ 71 $ 19 — $ 409 Impaired PNCI Loans – As of December 31, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total With no related allowance recorded: Recorded investment $ 343 $ 366 $ 346 $ 25 — $ 37 $ 7 — — $ 1,124 Unpaid principal $ 353 $ 2,620 $ 374 $ 25 — $ 54 $ 7 — — $ 3,433 Average recorded Investment $ 246 $ 753 $ 287 $ 12 — $ 36 $ 10 — — $ 1,344 Interest income Recognized $ 14 — $ (1 ) — — — $ 1 — — $ 14 With an allowance recorded: Recorded investment $ 834 $ 146 $ 436 — — $ 220 — — — $ 1,636 Unpaid principal $ 852 $ 146 $ 436 — — $ 220 — — — $ 1,654 Related allowance $ 177 $ 108 $ 205 — — $ 131 — — — $ 621 Average recorded Investment $ 516 $ 148 $ 319 — — $ 124 — — — $ 1,107 Interest income Recognized $ 8 $ 8 $ 20 — — $ 12 — — — $ 48 Impaired Originated Loans – As of, or for the Six Months Ended, June 30, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total With no related allowance recorded: Recorded investment $ 4,002 $ 48,781 $ 2,641 $ 626 $ 33 $ 16 $ 1,151 $ 2,468 $ 16 $ 59,734 Unpaid principal $ 6,227 $ 51,862 $ 5,592 $ 1,032 $ 70 $ 22 $ 1,174 $ 6,689 $ 99 $ 72,767 Average recorded Investment $ 4,228 $ 54,387 $ 3,419 $ 540 $ 49 $ 21 $ 1,266 $ 1,904 $ 43 $ 65,857 Interest income Recognized $ 23 $ 651 $ 5 $ 1 — — $ 31 — — $ 711 With an allowance recorded: Recorded investment $ 2,821 $ 3,163 $ 3,559 $ 245 $ 7 — $ 998 $ 283 — $ 11,076 Unpaid principal $ 2,893 $ 3,324 $ 4,231 $ 325 $ 10 — $ 1,041 $ 283 — $ 12,107 Related allowance $ 625 $ 282 $ 1,810 $ 211 — — $ 405 $ 61 — $ 3,394 Average recorded Investment $ 2,594 $ 5,012 $ 3,196 $ 204 $ 5 $ 6 $ 1,524 $ 890 $ 73 $ 13,504 Interest income Recognized $ 34 $ 76 $ 35 $ 2 — — $ 25 $ 9 — $ 181 Impaired PNCI Loans – As of, or for the Six Months Ended, June 30, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total With no related allowance recorded: Recorded investment $ 144 $ 478 $ 320 — — $ 33 $ 10 — — $ 985 Unpaid principal $ 144 $ 2,648 $ 337 — — $ 44 $ 10 — — $ 3,183 Average recorded Investment $ 94 $ 822 $ 291 — — $ 35 $ 12 — — $ 1,254 Interest income Recognized $ 6 — $ (1 ) — — — — — — $ 5 With an allowance recorded: Recorded investment $ 430 $ 148 $ 467 — — $ 28 — — — $ 1,073 Unpaid principal $ 442 $ 148 $ 476 — — $ 28 — — — $ 1,094 Related allowance $ 155 $ 110 $ 278 — — $ 3 — — — $ 546 Average recorded Investment $ 352 $ 153 $ 260 — — $ 28 — — — $ 793 Interest income Recognized $ 4 $ 4 $ 8 — — $ 1 — — — $ 17
Troubled Debt Restructurings	The following table shows certain information regarding Troubled Debt Restructurings (TDRs) that occurred during the period indicated: TDR Information for the Three Months Ended June 30, 2015 RE Mortgage Home Equity Auto Other Construction ($ in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Number — — — 1 — — 2 — — 3 Pre-mod outstanding principal balance — — — $ 69 — — $ 182 — — $ 251 Post-mod outstanding principal balance — — — $ 73 — — $ 182 — — $ 255 Financial impact due to TDR taken as additional provision — — — — — — $ 86 — — $ 86 Number that defaulted during the period 1 1 — — — — — — — 2 Recorded investment of TDRs that defaulted during the period $ 98 $ 37 — — — — — — — $ 135 Financial impact due to the default of previous TDR taken as charge-offs or additional provisions — — — — — — — — — — The following tables show certain information regarding TDRs that occurred during the periods indicated: TDR Information for the Six Months Ended June 30, 2015 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Number 1 1 — 1 — 2 3 — — 8 Pre-mod outstanding principal balance $ 108 $ 124 — $ 69 — $ 89 $ 468 — — $ 858 Post-mod outstanding principal balance $ 110 $ 124 — $ 74 — $ 89 $ 470 — — $ 867 Financial impact due to TDR taken as additional provision $ 8 $ (5 ) — — — $ 5 $ 249 — — $ 257 Number that defaulted during the period 1 1 1 — — — — — — 3 Recorded investment of TDRs that defaulted during the period $ 98 $ 37 $ 46 — — — — — — $ 181 Financial impact due to the default of previous TDR taken as charge-offs or additional provisions — — — — — — — — — — TDR Information for the Three Months Ended June 30, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Number 1 2 1 1 — — 2 — — 7 Pre-mod outstanding principal balance $ 112 $ 568 $ 200 $ 32 — — $ 34 — — $ 946 Post-mod outstanding principal balance $ 112 $ 571 $ 212 $ 33 — — $ 34 — — $ 962 Financial impact due to TDR taken as additional provision — $ 8 — — — — $ 4 — — $ 12 Number that defaulted during the period 1 1 — — — — — — — 2 Recorded investment of TDRs that defaulted during the period $ 152 $ 163 — — — — — — — $ 315 Financial impact due to the default of previous TDR taken as charge-offs or additional provisions — — — — — — — — — — TDR Information for the Six Months Ended June 30, 2014 RE Mortgage Home Equity Auto Other Construction (in thousands) Resid. Comm. Lines Loans Indirect Consum. C&I Resid. Comm. Total Number 3 4 3 1 — — 3 1 1 16 Pre-mod outstanding principal balance $ 806 $ 824 $ 479 $ 32 — — $ 72 $ 102 $ 118 $ 2,433 Post-mod outstanding principal balance $ 806 $ 830 $ 491 $ 33 — — $ 72 $ 85 $ 100 $ 2,417 Financial impact due to TDR taken as additional provision $ 37 $ 18 — — — — $ 21 — — $ 76 Number that defaulted during the period 1 2 — — — — 1 — — 4 Recorded investment of TDRs that defaulted during the period $ 152 $ 423 — — — — $ 116 — — $ 691 Financial impact due to the default of previous TDR taken as charge-offs or additional provisions

Foreclosed Assets (Tables)

Foreclosed Assets (Tables)	6 Months Ended
	Jun. 30, 2015
Text Block [Abstract]
Summary of Activity in Balance of Foreclosed Assets	A summary of the activity in the balance of foreclosed assets follows ($ in thousands): Six months ended June 30, 2015 Six months ended June 30, 2014 Noncovered Covered Total Noncovered Covered Total Beginning balance, net $ 4,449 $ 445 $ 4,894 $ 5,588 $ 674 $ 6,262 Additions/transfers from loans and covered 2,605 (445 ) 2,160 4,578 — 4,578 Dispositions/sales (1,420 ) — (1,420 ) (4,873 ) (142 ) (5,015 ) Valuation adjustments (241 ) — (241 ) (29 ) (11 ) (40 ) Ending balance, net $ 5,393 $ 0 $ 5,393 $ 5,264 $ 521 $ 5,785 Ending valuation allowance $ (438 ) $ 0 $ (438 ) $ (76 ) $ (11 ) $ (87 ) Ending number of foreclosed assets 33 — 33 23 2 25 Proceeds from sale of foreclosed assets $ 1,033 $ 0 $ 1,033 $ 6,315 $ 168 $ 6,483 Gain on sale of foreclosed assets $ 426 $ 0 $ 426 $ 1,442 $ 26 $ 1,468

Premises and Equipment (Tables)

Premises and Equipment (Tables)	6 Months Ended
	Jun. 30, 2015
Property, Plant and Equipment [Abstract]
Summary of Premises and Equipment	Premises and equipment were comprised of: June 30, December 31, ($ in thousands) Land & land improvements $ 8,883 $ 8,933 Buildings 39,090 39,638 Furniture and equipment 28,620 28,446 76,593 77,017 Less: Accumulated depreciation (34,559 ) (33,570 ) 42,034 43,447 Construction in progress 22 46 Total premises and equipment $ 42,056 $ 43,493

Cash Value of Life Insurance (T

Cash Value of Life Insurance (Tables)	6 Months Ended
	Jun. 30, 2015
Investments, All Other Investments [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 (in thousands): Six months ended June 30, 2015 2014 Beginning balance $ 92,337 $ 52,309 Increase in cash value of life insurance 1,350 797 Ending balance $ 93,687 $ 53,106 End of period death benefit $ 165,728 $ 94,999 Number of policies owned 189 133 Insurance companies used 14 6 Current and former employees and directors covered 60 36

Goodwill and Other Intangible47

Goodwill and Other Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2015
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) June 30, Additions Reductions December 31, Goodwill $ 63,462 — — $ 63,462
Summary of Core Deposit Intangibles	The following table summarizes the Company’s core deposit intangibles as of the dates indicated: (in thousands) June 30, Additions Reductions/ Fully December 31, Core deposit intangibles $ 8,074 — — — $ 8,074 Accumulated amortization (1,601 ) — $ (578 ) — (1,023 ) Core deposit intangibles, net $ 6,473 — $ (578 ) — $ 7,051
Estimated Core Deposit Intangible Amortization	The following table summarizes the Company’s estimated core deposit intangible amortization (dollars in thousands): Years Ended Estimated Core Deposit 2015 $ 1,157 2016 1,157 2017 1,109 2018 1,044 2019 948 Thereafter $ 1,636

Mortgage Servicing Rights (Tabl

Mortgage Servicing Rights (Tables)	6 Months Ended
	Jun. 30, 2015
Text Block [Abstract]
Fair Value of Mortgage Servicing Rights	The following tables summarize the activity in, and the main assumptions we used to determine the fair value of mortgage servicing rights (“MSRs”) for the periods indicated (dollars in thousands): Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 Mortgage servicing rights: Balance at beginning of period $ 7,057 $ 6,107 $ 7,378 $ 6,165 Additions 236 153 421 276 Change in fair value 521 (351 ) 15 (532 ) Balance at end of period $ 7,814 $ 5,909 $ 7,814 $ 5,909 Servicing, late and ancillary fees received $ 528 $ 421 $ 1,062 $ 841 Balance of loans serviced at: Beginning of period $ 832,143 $ 672,341 $ 840,288 $ 680,197 End of period $ 827,333 $ 667,969 $ 827,333 $ 667,969 Weighted-average prepayment speed (CPR) 9.5 % 11.0 % Discount rate 10.0 % 10.0 %

Indemnification Asset_Liabili49

Indemnification Asset/Liability (Tables)	6 Months Ended
	Jun. 30, 2015
Text Block [Abstract]
Summary of Activity in Balance of Indemnification Asset (Liability)	A summary of the activity in the balance of indemnification asset (liability) follows (in thousands): Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 Beginning (payable) receivable balance $ (433 ) $ (220 ) $ (349 ) $ 206 Effect of actual covered losses and change in estimated future covered losses (24 ) (97 ) (86 ) (565 ) Reimbursable expenses (revenue), net (18 ) 14 (21 ) 73 Payments made (received) 9 266 (10 ) 249 Ending payable balance $ (466 ) $ (37 ) $ (466 ) $ (37 ) Amount of indemnification asset (liability) recorded in other assets $ 105 $ (37 ) Amount of indemnification liability recorded in other liabilities (571 ) — Ending balance $ (466 ) $ (37 )

Other Assets (Tables)

Other Assets (Tables)	6 Months Ended
	Jun. 30, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Summary of Other Assets	Other assets were comprised of (in thousands): June 30, December 31, Deferred tax asset, net $ 38,901 $ 37,706 Prepaid expense 2,462 2,034 Software 1,220 1,327 Advanced compensation 743 908 Capital Trusts 1,693 1,690 Investment in low income housing tax credit funds 4,431 — Miscellaneous other assets 5,347 8,070 Total other assets $ 54,797 $ 51,735

Deposits (Tables)

Deposits (Tables)	6 Months Ended
	Jun. 30, 2015
Banking and Thrift [Abstract]
Summary of Balances of Deposits	A summary of the balances of deposits follows (in thousands): June 30 December 31, Noninterest-bearing demand $ 1,060,650 $ 1,083,900 Interest-bearing demand 780,647 782,385 Savings 1,179,836 1,156,126 Time certificates, $250,000 and over 32,716 38,217 Other time certificates 287,833 319,795 Total deposits $ 3,341,682 $ 3,380,423

Reserve for Unfunded Commitme52

Reserve for Unfunded Commitments (Tables)	6 Months Ended
	Jun. 30, 2015
Text Block [Abstract]
Summary of Activity in Reserve for Unfunded Commitments	The following tables summarize the activity in reserve for unfunded commitments for the periods indicated (dollars in thousands): Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 Balance at beginning of period $ 2,015 $ 2,230 $ 2,145 $ 2,415 Provision (benefit) for losses – unfunded commitments 110 (185 ) (20 ) (370 ) Balance at end of period $ 2,125 $ 2,045 $ 2,125 $ 2,045

Other Liabilities (Tables)

Other Liabilities (Tables)	6 Months Ended
	Jun. 30, 2015
Other Liabilities Disclosure [Abstract]
Components of Other Liabilities	Other liabilities were comprised of (in thousands): June 30, December 31, Deferred compensation $ 7,259 $ 7,408 Pension liability 27,114 26,798 Joint beneficiary agreements 2,843 2,728 Low income housing tax credit fund commitments 4,015 — Miscellaneous other liabilities 13,772 12,258 Total other liabilities $ 55,003 $ 49,192

Other Borrowings (Tables)

Other Borrowings (Tables)	6 Months Ended
	Jun. 30, 2015
Text Block [Abstract]
Summary of Balances of Other Borrowings	A summary of the balances of other borrowings follows: June 30, December 31, (in thousands) Other collateralized borrowings, fixed rate, as of June 30, 2015 of 0.05%, payable on July 1, 2015 $ 6,735 $ 9,276 Total other borrowings $ 6,735 $ 9,276

Junior Subordinated Debt (Table

Junior Subordinated Debt (Tables)	6 Months Ended
	Jun. 30, 2015
Text Block [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): Subordinated Debt Series Maturity Face Coupon Rate As of June 30, 2015 Current Recorded TriCo Cap Trust I 10/7/2033 $ 20,619 3.05 % 3.33 % $ 20,619 TriCo Cap Trust II 7/23/2034 20,619 2.55 % 2.83 % 20,619 North Valley Trust II 4/24/2033 6,186 3.25 % 3.53 % 5,035 North Valley Trust III 4/24/2034 5,155 2.80 % 3.08 % 3,946 North Valley Trust IV 3/15/2036 10,310 1.33 % 1.60 % 6,150 $ 62,889 $ 56,369

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Future Minimum Commitments under Non-Cancelable Operating Leases with Initial or Remaining Terms of One Year or More	At December 31, 2014, future minimum commitments under non-cancelable operating leases with initial or remaining terms of one year or more are as follows: Operating (in thousands) 2015 $ 3,419 2016 2,510 2017 1,856 2018 1,323 2019 859 Thereafter 1,180 Future minimum lease payments $ 11,147
Summary of Bank's Commitments and Contingent Liabilities	The following table presents a summary of the Bank’s commitments and contingent liabilities: (in thousands) June 30, December 31, Financial instruments whose amounts represent risk: Commitments to extend credit: Commercial loans $ 185,842 $ 177,557 Consumer loans 393,218 392,705 Real estate mortgage loans 38,778 36,139 Real estate construction loans 38,295 49,774 Standby letters of credit 11,487 17,531 Deposit account overdraft privilege $ 97,875 $ 101,060

Stock Options and Other Equit57

Stock Options and Other Equity-Based Incentive Instruments (Tables)	6 Months Ended
	Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Option Activity	Stock option activity during the six months ended June 30, 2015 is summarized in the following table: Number of Shares Option Price per Share Weighted Weighted Outstanding at December 31, 2014 1,102,850 $ 12.63 to $ 25.91 $ 18.25 Options granted — — to — — — Options exercised (64,000 ) $ 15.34 to $ 20.58 $ 19.32 Options forfeited — — to — — Outstanding at June 30, 2015 1,038,850 $ 12.63 to $ 25.91 $ 18.19
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 June 30, 2015: Currently Currently Not Total Number of options 755,850 283,000 1,038,850 Weighted average exercise price $ 18.56 $ 17.20 $ 18.19 Intrinsic value (in thousands) $ 4,219 $ 1,939 $ 6,158 Weighted average remaining contractual term (yrs.) 4.3 7.1 5.0
Restricted Stock Unit (RSU) Activity	Restricted stock unit (RSU) activity is summarized in the following table for the dates indicated: Service Condition Vesting RSUs Market Plus Service Condition Vesting RSUs Number of RSUs Weighted Date of Grant Number of RSUs Weighted Average Fair Value on Date of Grant Outstanding at December 31, 2014 30,920 15,366 RSUs granted 30,348 $ 23.45 18,348 $ 21.01 RSUs added through dividend credits 459 — RSUs released — — RSUs forfeited/expired (2,639 ) — Outstanding at June 30, 2015 59,088 33,714

Noninterest Income and Expense

Noninterest Income and Expense (Tables)	6 Months Ended
	Jun. 30, 2015
Other Income and Expenses [Abstract]
Components of Other Noninterest Income	The components of other noninterest income were as follows (in thousands): Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 Service charges on deposit accounts $ 3,637 $ 2,724 $ 7,237 $ 5,414 ATM and interchange fees 3,383 2,192 6,385 4,205 Other service fees 779 533 1,493 1,053 Mortgage banking service fees 528 421 1,062 841 Change in value of mortgage servicing rights 521 (351 ) 15 (532 ) Total service charges and fees 8,848 5,519 16,192 10,981 Gain on sale of loans 837 514 1,459 978 Commissions on sale of non-deposit investment products 784 843 1,749 1,614 Increase in cash value of life insurance 675 400 1,350 797 Change in indemnification asset (57 ) (93 ) (122 ) (505 ) Gain (loss) on sale of foreclosed assets 115 241 426 1,468 Sale of customer checks 121 98 249 199 Lease brokerage income 245 111 382 218 Gain (loss) on disposal of fixed assets 1 71 (83 ) 70 Other 511 173 658 352 Total other noninterest income 3,232 2,358 6,068 5,191 Total noninterest income $ 12,080 $ 7,877 $ 22,260 $ 16,172 Mortgage loan servicing fees, net of change in fair value of mortgage loan servicing rights $ 1,049 $ 70 $ 1,077 $ 309
Components of Noninterest Expense	The components of noninterest expense were as follows (in thousands): Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 Base salaries, net of deferred loan origination costs $ 11,502 $ 9,008 $ 23,246 $ 17,874 Incentive compensation 1,390 1,205 2,986 2,328 Benefits and other compensation costs 4,350 3,104 9,110 6,418 Total salaries and benefits expense 17,242 13,317 35,342 26,620 Occupancy 2,541 1,802 4,958 3,764 Equipment 1,527 1,060 2,941 2,096 Data processing and software 1,834 1,350 3,786 2,528 ATM network charges 985 710 1,755 1,353 Telecommunications 785 713 1,671 1,293 Postage 330 221 642 448 Courier service 253 224 501 458 Advertising 1,002 341 1,810 683 Assessments 694 481 1,345 1,002 Operational losses 149 150 273 327 Professional fees 1,035 1,275 2,154 1,889 Foreclosed assets expense 102 151 200 309 Provision for foreclosed asset losses 174 4 241 40 Change in reserve for unfunded commitments 110 (185 ) (20 ) (370 ) Intangible amortization 289 52 578 104 Merger expense — 418 586 643 Other 3,384 3,032 5,955 5,246 Total other noninterest expense 15,194 11,799 29,376 21,813 Total noninterest expense $ 32,436 $ 25,116 $ 64,718 $ 48,433 Merger expense: Data processing and software — — $ 108 — Professional fees — $ 243 120 $ 468 Other — 175 358 175 Total merger expense — $ 418 $ 586 $ 643

Income Taxes (Tables)

Income Taxes (Tables)	6 Months Ended
	Jun. 30, 2015
Income Tax Disclosure [Abstract]
Reconciliation of Effective Tax Rate and Statutory Federal Income Tax Rate	The effective tax rate and the statutory federal income tax rate are reconciled for the periods indicated as follows: Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 Federal statutory income tax rate 35.0 % 35.0 % 35.0 % 35.0 % State income taxes, net of federal tax benefit 6.7 7.1 6.8 7.0 Tax-exempt interest on municipal obligations (0.6 ) (0.5 ) (0.5 ) (0.4 ) Increase in cash value of insurance policies (1.3 ) (1.7 ) (1.4 ) (1.3 ) Nondeductible merger expenses — 1.2 — 0.6 Other (0.3 ) 1.0 0.1 0.3 Effective Tax Rate 39.5 % 42.1 % 40.0 % 41.2 %

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Computation of Earnings Per Share	Earnings per share have been computed based on the following: Three months ended Six months ended (in thousands) 2015 2014 2015 2014 Net income $ 11,366 $ 4,859 $ 19,702 $ 12,224 Average number of common shares outstanding 22,745 16,129 22,736 16,113 Effect of dilutive stock options 235 181 229 203 Average number of common shares outstanding used to calculate diluted earnings per share 22,980 16,310 22,965 16,316 Options excluded from diluted earnings per share because the effect of these options was antidilutive 23 101 23 101 Restricted stock excluded from diluted earnings per share because the effect of these restricted stock was antidilutive — n/a — n/a

Comprehensive Income (Tables)

Comprehensive Income (Tables)	6 Months Ended
	Jun. 30, 2015
Equity [Abstract]
Components of Accumulated Other Comprehensive Income	The components of accumulated other comprehensive income, included in shareholders’ equity, are as follows: June 30, December 31, (in thousands) Net unrealized (losses) gains on available for sale securities $ (697 ) $ 4,040 Tax effect 293 (1,699 ) Unrealized holding gains on available for sale securities, net of tax (404 ) 2,341 Unfunded status of the supplemental retirement plans (7,501 ) (7,885 ) Tax effect 3,153 3,315 Unfunded status of the supplemental retirement plans, net of tax (4,348 ) (4,570 ) Joint beneficiary agreement liability 26 26 Tax effect — — Joint beneficiary agreement liability, net of tax 26 26 Accumulated other comprehensive loss $ (4,726 ) $ (2,203 )
Components of Other Comprehensive Income and Related Tax Effects	The components of other comprehensive income and related tax effects are as follows: Three Months Ended Six Months Ended (in thousands) 2015 2014 2015 2014 Unrealized holding (losses) gains on available for sale securities before reclassifications $ (4,752 ) $ 658 $ (4,737 ) $ 553 Amounts reclassified out of accumulated other comprehensive income — — — — Unrealized holding (losses) gains on available for sale securities after reclassifications (4,752 ) 658 (4,737 ) 553 Tax effect 1,998 (277 ) 1,992 (232 ) Unrealized holding (losses) gains on available for sale securities, net of tax (2,754 ) 381 (2,745 ) 321 Change in unfunded status of the supplemental retirement plans before reclassifications — — — — Amounts reclassified out of accumulated other comprehensive income: Amortization of prior service cost (14 ) 5 (28 ) 10 Amortization of actuarial losses 206 4 412 8 Total amounts reclassified out of accumulated other comprehensive income 192 9 384 18 Change in unfunded status of the supplemental retirement plans after reclassifications 192 9 384 18 Tax effect (81 ) (4 ) (162 ) (8 ) Change in unfunded status of the supplemental retirement plans, net of tax 111 5 222 10 Change in joint beneficiary agreement liability before reclassifications — — — — Amounts reclassified out of accumulated other comprehensive income — — — — Change in joint beneficiary agreement liability after reclassifications — — — — Tax effect — — — — Change in joint beneficiary agreement liability, net of tax — — — — Total other comprehensive income (loss) $ (2,643 ) $ 386 $ (2,523 ) $ 331

Retirement Plans (Tables)

Retirement Plans (Tables)	6 Months Ended
	Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract]
Net Periodic Benefit Cost Recognized for Supplemental Retirement Plans	The following table sets forth the net periodic benefit cost recognized for the plans: (in thousands) Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 Net pension cost included the following components: Service cost-benefits earned during the period $ 256 $ 163 $ 512 $ 326 Interest cost on projected benefit obligation 239 174 478 348 Amortization of net obligation at transition — 1 — 1 Amortization of prior service cost (14 ) 34 (28 ) 69 Recognized net actuarial loss 206 4 412 8 Net periodic pension cost $ 687 $ 376 $ 1,374 $ 752 Company contributions to pension plans $ 455 $ 376 $ 661 $ 752 Pension plan payouts to participants $ 455 $ 376 $ 661 $ 752

Related Party Transactions (Tab

Related Party Transactions (Tables)	6 Months Ended
	Jun. 30, 2015
Related Party Transactions [Abstract]
Summary of Loan Activity	The following table summarizes the activity in these loans for 2015 and 2014 (in thousands): Balance December 31, 2013 $ 2,636 Advances/new loans 2,106 Removed/payments (1,610 ) Balance December 31, 2014 $ 3,132 Advances/new loans 745 Removed/payments (582 ) Balance June 30, 2015 $ 3,295

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Recorded Amount of Assets and Liabilities Measured at Fair Value on Recurring Basis	The table below presents the recorded amount of assets and liabilities measured at fair value on a recurring basis (in thousands): Fair value at June 30, 2015 Total Level 1 Level 2 Level 3 Securities available for sale: Obligations of U.S. government corporations and agencies $ 240,552 — $ 240,552 — Obligations of states and political subdivisions 38,987 — 38,987 — Corporate debt securities 1,900 — 1,900 — Marketable equity services 2,991 $ 2,991 — — Mortgage servicing rights 7,814 — — $ 7,814 Total assets measured at fair value $ 292,244 $ 2,991 $ 281,439 $ 7,814 Fair value at December 31, 2014 Total Level 1 Level 2 Level 3 Securities available for sale: Obligations of U.S. government corporations and agencies $ 75,120 — $ 75,120 — Obligations of states and political subdivisions 3,175 — 3,175 — Corporate debt securities 1,908 — 1,908 — Marketable equity securities 3,002 $ 3,002 — — Mortgage servicing rights 7,378 — — $ 7,378 Total assets measured at fair value $ 90,583 $ 3,002 $ 80,203 $ 7,378
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 time periods indicated. Had there been any transfer into or out of Level 3 during the time periods indicated, 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): Three months ended June 30, Six months ended June 30, 2015 2014 2015 2014 Mortgage servicing rights: Balance at beginning of period $ 7,057 $ 6,107 $ 7,378 $ 6,165 Issuances 235 153 421 276 Change included in earnings 522 (351 ) 15 (532 ) Balance at end of period $ 7,814 $ 5,909 $ 7,814 $ 5,909
Quantitative Information about Recurring Level 3 Fair Value Measurements	The following table presents quantitative information about recurring Level 3 fair value measurements at June 30, 2015: Fair Value Valuation Technique Unobservable Inputs Range, Mortgage Servicing Rights $ 7,814 Discounted cash flow Constant prepayment rate 6.3%-22.7%, 9.5% Discount rate 10.0%-12.0%, 10.0% The following table presents quantitative information about recurring Level 3 fair value measurements at December 31, 2014: Fair Value Valuation Technique Unobservable Range, Mortgage Servicing Rights $ 7,378 Discounted cash flow Constant prepayment rate 5.7%-23.4%, 12.0% Discount rate 10.0%-12.0%, 10.0%
Assets Measured at Fair Value on Nonrecurring Basis	The table below presents the recorded amount of certain assets measured at fair value on a nonrecurring basis, as of the dates indicated. For these purposes, an asset is deemed to be measured at fair value if it had a write-down or an additional allowance provided during the periods indicated, and the recorded value of the asset at the end of the period is equal to the net value of the underlying collateral (in thousands): Total Six months ended June 30, 2015 Total Level 1 Level 2 Level 3 Gains/(Losses) Fair value: Impaired Originated & PNCI loans $ 3,377 — — $ 3,377 $ 151 Foreclosed assets 3,190 — — 3,190 (239 ) Total assets measured at fair value $ 6,567 — — $ 6,567 $ (88 ) Total Year ended December 31, 2014 Total Level 1 Level 2 Level 3 (Losses) Fair value: Impaired Originated & PNCI loans $ 2,480 — — $ 2,480 $ (636 ) Foreclosed assets 2,611 — — 2,611 (137 ) Total assets measured at fair value $ 5,091 — — $ 5,091 $ (773 ) Total Six months ended June 30, 2014 Total Level 1 Level 2 Level 3 (Losses) Fair value: Impaired Originated & PNCI loans $ 3,842 — — $ 3,842 $ (509 ) Foreclosed assets 566 — — 566 (16 ) Total assets measured at fair value $ 4,408 — — $ 4,408 $ (525 )
Schedule of Gains and Losses from Nonrecurring Fair Value Adjustments	The table below presents the gains and losses from nonrecurring fair value adjustments that occurred in the periods indicated (in thousands): Three months ended June 30, (Gains)/losses from nonrecurring fair value adjustments: 2015 2014 Impaired Originated & PNCI loans $ (22 ) $ 298 Foreclosed assets 206 4 Total losses from nonrecurring fair value adjustments $ 184 $ 302
Quantitative Information about Level 3 Fair Value Measurements for Financial Instruments Measured at Fair Value on Nonrecurring Basis	The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at June 30, 2015: Fair Value Valuation Technique Unobservable Range, Impaired Originated & PNCI loans $ 3,377 Sales comparison approach Adjustment for differences (5.0)%-(42.0)%, (9.0)% Income approach Capitalization rate 8.0%-9.1%, 8.1% Foreclosed assets $ 3,190 Sales comparison Adjustment for differences approach between comparable sales (0.0)%-(30.1)%, (3.7)% The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at December 31, 2014: Fair Value Valuation Technique Unobservable Range, Impaired Originated & PNCI loans $ 2,480 Sales comparison approach Adjustment for differences (5.0)%-(42.5)%, (10.1)% Income approach Capitalization rate 9.09%-9.09 %, 9.09% Foreclosed assets $ 2,611 Sales comparison Adjustment for differences approach between comparable sales (5.0)%-(29.4)%, (8.2)%
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): June 30, 2015 December 31, 2014 Carrying Fair Carrying Fair Financial assets: Level 1 inputs: Cash and due from banks $ 92,234 $ 92,234 $ 93,150 $ 93,150 Cash at Federal Reserve and other banks 77,269 77,269 517,578 517,578 Level 2 inputs: Securities held to maturity 776,283 778,697 676,426 688,779 Restricted equity securities 16,956 N/A 16,956 N/A Loans held for sale 4,630 4,630 3,579 3,579 Level 3 inputs: Loans, net 2,358,308 2,439,466 2,245,938 2,342,570 Indemnification (liability) asset (466 ) (466 ) (349 ) (349 ) Financial liabilities: Level 2 inputs: Deposits 3,341,682 3,341,380 3,380,423 3,380,486 Other borrowings 6,735 6,735 9,276 9,276 Level 3 inputs: Junior subordinated debt 56,369 42,063 56,272 45,053 Contract Fair Contract Fair Off-balance sheet: Level 3 inputs: Commitments $ 656,133 $ 6,561 $ 656,175 $ 6,562 Standby letters of credit 11,487 115 17,531 175 Overdraft privilege commitments 97,875 979 101,060 1,011

TriCo Bancshares Condensed Fi65

TriCo Bancshares Condensed Financial Statements (Parent Only) (Tables)	6 Months Ended
	Jun. 30, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Balance Sheets	Condensed Balance Sheets June 30, December 31, (In thousands) Assets Cash and Cash equivalents $ 2,437 $ 2,229 Investment in Tri Counties Bank 483,796 470,797 Other assets 1,760 1,902 Total assets $ 487,993 $ 474,928 Liabilities and shareholders’ equity Other liabilities $ 480 $ 484 Junior subordinated debt 56,369 56,272 Total liabilities 56,849 56,756 Shareholders’ equity: Common stock, no par value: authorized 50,000,000 shares; issued and outstanding 22,749,523 and 22,714,964 shares, respectively 245,965 244,318 Retained earnings 189,905 176,057 Accumulated other comprehensive loss, net (4,726 ) (2,203 ) Total shareholders’ equity 431,144 418,172 Total liabilities and shareholders’ equity $ 487,993 $ 474,928
Condensed Statements of Income	Condensed Statements of Income Three months ended June 30, Six months ended June 30, (In thousands) 2015 2014 2015 2014 Interest expense $ (491 ) $ (306 ) $ (973 ) $ (610 ) Administration expense (263 ) (466 ) (416 ) (790 ) Loss before equity in net income of Tri Counties Bank (754 ) (772 ) (1,389 ) (1,400 ) Equity in net income of Tri Counties Bank: Distributed 3,593 2,050 5,713 4,100 (Over) under distributed 8,210 3,400 14,794 9,079 Income tax benefit 317 181 584 445 Net income $ 11,366 $ 4,859 $ 19,702 $ 12,224
Condensed Statements of Comprehensive Income	Condensed Statements of Comprehensive Income Three months ended June 30, Six months ended June 30, (In thousands) 2015 2014 2015 2014 Net income $ 11,366 $ 4,859 $ 19,702 $ 12,224 Other comprehensive income (loss), net of tax: Unrealized holding gains (losses) on available for sale securities arising during the period (2,754 ) 381 (2,745 ) 321 Change in minimum pension liability 111 5 222 10 Other comprehensive income (loss) (2,643 ) 386 (2,523 ) 331 Comprehensive income $ 8,723 $ 5,245 $ 17,179 $ 12,555
Condensed Statements of Cash Flows	Condensed Statements of Cash Flows Six months ended June 30, (In thousands) 2015 2014 Operating activities: Net income $ 19,702 $ 12,224 Adjustments to reconcile net income to net cash provided by operating activities: Over (under) distributed equity in earnings of Tri Counties Bank (14,794 ) (9,079 ) Stock option vesting expense 698 534 Stock option excess tax benefits (30 ) (220 ) Net change in other assets and liabilities (463 ) (474 ) Net cash provided by operating activities 5,113 2,985 Investing activities: None Financing activities: Issuance of common stock through option exercise 30 220 Stock option excess tax benefits 569 527 Repurchase of common stock (31 ) (292 ) Cash dividends paid — common (5,473 ) (3,547 ) Net cash used for financing activities (4,905 ) (3,092 ) (Decrease) increase in cash and cash equivalents 208 (107 ) Cash and cash equivalents at beginning of year 2,229 2,520 Cash and cash equivalents at end of year $ 2,437 $ 2,413

Regulatory Matters (Tables)

Regulatory Matters (Tables)	6 Months Ended
	Jun. 30, 2015
Banking and Thrift [Abstract]
Actual and Required Capital Ratios of Bank	The following table presents actual and required capital ratios as of June 30, 2015 for the Company and the Bank under Basel III Capital Rules. The minimum capital amounts presented include the minimum required capital levels as of June 30, 2015 based on the phased-in provisions of the Basel III Capital Rules and the minimum required capital levels as of January 1, 2019 when the Basel III Capital Rules have been fully phased-in. Capital levels required to be considered well capitalized are based upon prompt corrective action regulations, as amended to reflect the changes under the Basel III Capital Rules. Actual Minimum Capital Phase-in Schedule Minimum Capital Required to be Amount Ratio Amount Ratio Amount Ratio Amount Ratio (dollars in thousands) As of June 30, 2015: Total Capital (to Risk Weighted Assets): Consolidated $ 454,345 15.16 % $ 239,794 8.00 % $ 314,729 10.50 % $ 299,742 10.00 % Tri Counties Bank $ 452,301 15.10 % $ 239,651 8.00 % $ 314,542 10.50 % $ 299,564 10.00 % Tier 1 Capital (to Risk Weighted Assets): Consolidated $ 416,876 13.91 % $ 179,845 6.00 % $ 254,781 8.50 % $ 239,794 8.00 % Tri Counties Bank $ 414,854 13.85 % $ 179,739 6.00 % $ 254,630 8.50 % $ 239,651 8.00 % Common equity Tier 1 Capital (to Risk Weighted Assets): Consolidated $ 362,200 12.08 % $ 134,884 4.50 % $ 209,820 7.00 % $ 194,832 6.50 % Tri Counties Bank $ 414,854 13.85 % $ 134,804 4.50 % $ 209,695 7.00 % $ 194,717 6.50 % Tier 1 Capital (to Average Assets): Consolidated $ 416,876 10.91 % $ 152,821 4.00 % $ 152,821 4.00 % $ 190,026 5.00 % Tri Counties Bank $ 414,854 10.86 % $ 152,747 4.00 % $ 152,747 4.00 % $ 190,934 5.00 % The following table presents actual and required capital ratios as of December 31, 2104 for the Company and the Bank under the regulatory capital rules then in effect. Actual Minimum Minimum Amount Ratio Amount Ratio Amount Ratio (dollars in thousands) As of December 31, 2014: Total Capital (to Risk Weighted Assets): Consolidated $ 436,955 15.63 % $ 223,603 8.0 % N/A N/A Tri Counties Bank $ 433,286 15.51 % $ 223,449 8.0 % $ 279,311 10.0 % Tier 1 Capital (to Risk Weighted Assets): Consolidated $ 401,971 14.38 % $ 111,801 4.0 % N/A N/A Tri Counties Bank $ 398,325 14.26 % $ 111,724 4.0 % $ 167,587 6.0 % Tier 1 Capital (to Average Assets): Consolidated $ 401,971 10.80 % $ 148,819 4.0 % N/A N/A Tri Counties Bank $ 398,325 10.71 % $ 148,734 4.0 % $ 185,918 5.0 %

Summary of Quarterly Results 67

Summary of Quarterly Results of Operations (unaudited) (Tables)	6 Months Ended
	Jun. 30, 2015
Quarterly Financial Information Disclosure [Abstract]
Results of Operations	The following table sets forth the results of operations for the periods indicated, and is unaudited; however, in the opinion of Management, it reflects all adjustments (which include only normal recurring adjustments) necessary to present fairly the summarized results for such periods. 2015 Quarters Ended December 31, September 30, June 30, March 31, (dollars in thousands, except per share data) Interest and dividend income: Loans: Discount accretion PCI – cash basis $ 404 $ 172 Discount accretion PCI – other 907 1,274 Discount accretion PNCI 822 1,348 All other loan interest income 29,886 28,371 Total loan interest income 32,019 31,165 Debt securities, dividends and interest bearing cash at Banks (not FTE) 7,848 6,560 Total interest income 39,867 37,725 Interest expense 1,346 1,382 Net interest income 38,521 36,343 (Benefit from) provision for loan losses (633 ) 197 Net interest income after provision for loan losses 39,154 36,146 Noninterest income 12,080 10,180 Noninterest expense 32,436 32,282 Income before income taxes 18,798 14,044 Income tax expense 7,432 5,708 Net income $ 11,366 $ 8,336 Per common share: Net income (diluted) $ 0.49 $ 0.36 Dividends $ 0.13 $ 0.11 2014 Quarters Ended December 31, September 30, June 30, March 31, (dollars in thousands, except per share data) Interest and dividend income: Loans: Discount accretion PCI – cash basis $ 107 $ 290 $ 69 $ 203 Discount accretion PCI – other 919 822 811 984 Discount accretion PNCI 796 402 624 379 All other loan interest income 28,914 23,466 22,929 22,172 Total loan interest income 30,736 24,980 24,433 23,738 Debt securities, dividends and interest bearing cash at Banks (not FTE) 5,671 4,151 3,985 3,421 Total interest income 36,407 29,131 28,418 27,159 Interest expense 1,437 1,082 1,075 1,087 Net interest income 34,970 28,049 27,343 26,072 (Benefit from) provision for loan losses (1,421 ) (2,977 ) 1,708 (1,355 ) Net interest income after provision for loan losses 36,391 31,026 25,635 27,427 Noninterest income 9,755 8,589 7,877 8,295 Noninterest expense 36,566 25,380 25,116 23,317 Income before income taxes 9,580 14,235 8,396 12,405 Income tax expense 3,930 6,001 3,537 5,040 Net income $ 5,650 $ 8,234 $ 4,859 $ 7,365 Per common share: Net income (diluted) $ 0.25 $ 0.50 $ 0.30 $ 0.45 Dividends $ 0.11 $ 0.11 $ 0.11 $ 0.11

Summary of Significant Accoun68

Summary of Significant Accounting Policies - Additional Information (Detail)	6 Months Ended	12 Months Ended
	Jun. 30, 2015USD ($)SegmentTrustBranchesBusiness	Dec. 31, 2014USD ($)	Jun. 30, 2014USD ($)
Significant Of Accounting Policies [Line Items]
Number of subsidiary business trusts | Trust	5
Number of business segment | Segment	1
Trading securities	$ 0	$ 0
Recognized OTTI losses	$ 0	$ 0
Loans contractual past due	90 days
TDR loans payment period in nonaccrual status	6 months
Reserve for unimpaired loans			$ 1,438,000
Tri Counties Bank [Member]
Significant Of Accounting Policies [Line Items]
Number of traditional operating branches | Branches	57
Number of in-store operating branches | Branches	16
California [Member]
Significant Of Accounting Policies [Line Items]
Number of counties | Business	26
Furniture and equipment [Member] | Minimum [Member]
Significant Of Accounting Policies [Line Items]
Estimated useful lives of the related assets or lease terms	3 years
Furniture and equipment [Member] | Maximum [Member]
Significant Of Accounting Policies [Line Items]
Estimated useful lives of the related assets or lease terms	10 years
Land improvements and buildings [Member] | Minimum [Member]
Significant Of Accounting Policies [Line Items]
Estimated useful lives of the related assets or lease terms	15 years
Land improvements and buildings [Member] | Maximum [Member]
Significant Of Accounting Policies [Line Items]
Estimated useful lives of the related assets or lease terms	40 years

Business Combinations - Additio

Business Combinations - Additional Information (Detail)	Oct. 03, 2014USD ($)$ / sharesshares	Jun. 30, 2015USD ($)shares	Jun. 30, 2014USD ($)Bank	Dec. 31, 2014USD ($)shares	Aug. 21, 2007shares
Business Acquisition [Line Items]
Business acquisition, common stock issued to acquiree's shareholders | shares	6,575,550
Fixed share exchange ratio	0.9433
Aggregate ownership percentage	28.90%
Cash in-lieu of fractional shares	$ 6,823
Business combination share outstanding | shares		22,749,523		22,714,964	15,814,662
Assets		$ 3,893,855,000		$ 3,916,458,000
North Valley Bancorp [Member]
Business Acquisition [Line Items]
Acquisition, completion date		Oct. 3, 2014
Closing stock price | $ / shares	$ 23.01
Consideration paid per share | $ / shares	$ 21.71
Cash in-lieu of fractional shares	$ 7,000
Business combination share outstanding | shares	22,714,964
Business combination consideration value	$ 151,310,000
Number of commercial banks | Bank			22
Assets			$ 935,000,000
Increase in net book value of land and buildings acquired	4,785,000
Recognized intangible related to acquisition	6,614,000
North Valley Bancorp [Member] | Junior subordinated debt [Member]
Business Acquisition [Line Items]
Discount on debt instrument	$ 6,664,000
North Valley Bancorp [Member] | Minimum [Member] | Junior subordinated debt [Member]
Business Acquisition [Line Items]
Amortization period of debt discount	18 years
North Valley Bancorp [Member] | Maximum [Member] | Junior subordinated debt [Member]
Business Acquisition [Line Items]
Amortization period of debt discount	21 years
North Valley Bancorp [Member] | Core deposit intangibles [Member]
Business Acquisition [Line Items]
Recognized intangible related to acquisition	$ 6,614,000
Percentage of acquired intangibles	0.97%
Finite lived intangible asset useful life	7 years

Business Combinations - Schedul

Business Combinations - Schedule of Fair Value of Consideration Transferred, Identifiable Net Assets Acquired and Resulting Goodwill (Detail) - USD ($)	Oct. 03, 2014	Jun. 30, 2015	Dec. 31, 2014
Fair value of consideration transferred:
Cash consideration	$ 6,823
Liabilities assumed:
Goodwill recognized		$ 63,462,000	$ 63,462,000
North Valley Bancorp [Member]
Fair value of consideration transferred:
Fair value of shares issued	151,303,000
Cash consideration	7,000
Total fair value of consideration transferred	151,310,000
Asset acquired:
Cash and cash equivalents	141,412,000
Securities available for sale	17,288,000
Securities held to maturity	189,950,000
Restricted equity securities	5,378,000
Loans	499,327,000
Foreclosed assets	695,000
Premises and equipment	11,936,000
Cash value of life insurance	38,075,000
Core deposit intangible	6,614,000
Other assets	20,064,000
Total assets acquired	930,739,000
Liabilities assumed:
Deposits	801,956,000
Other liabilities	10,429,000
Junior subordinated debt	14,987,000
Total liabilities assumed	827,372,000
Total net assets acquired	103,367,000
Goodwill recognized	$ 47,943,000

Business Combinations - Summary

Business Combinations - Summary of Estimated Fair Value Adjustments Resulting In Goodwill (Detail) - USD ($)	Oct. 03, 2014	Jun. 30, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Cash payments to North Valley Bancorp Shareholders	$ 6,823
Goodwill		$ 63,462,000	$ 63,462,000
North Valley Bancorp [Member]
Business Acquisition [Line Items]
Value of stock consideration paid to North Valley Bancorp Shareholders	151,303,000
Cash payments to North Valley Bancorp Shareholders	7,000
Cost basis net assets acquired	(98,040,000)
Goodwill	47,943,000
North Valley Bancorp [Member] | Deferred income taxes [Member]
Business Acquisition [Line Items]
Fair Value Adjustments	6,293,000
North Valley Bancorp [Member] | Loans [Member]
Business Acquisition [Line Items]
Fair Value Adjustments	5,832,000
North Valley Bancorp [Member] | Premises and equipment [Member]
Business Acquisition [Line Items]
Fair Value Adjustments	(4,785,000)
North Valley Bancorp [Member] | Core deposit intangibles [Member]
Business Acquisition [Line Items]
Fair Value Adjustments	(6,283,000)
North Valley Bancorp [Member] | Junior subordinated debt [Member]
Business Acquisition [Line Items]
Fair Value Adjustments	(6,664,000)
North Valley Bancorp [Member] | Other assets [Member]
Business Acquisition [Line Items]
Fair Value Adjustments	$ 280,000

Business Combinations - Sched72

Business Combinations - Schedule of Cost Basis, Fair Value Discount and loan Acquired (Detail) - North Valley Bancorp [Member] $ in Thousands	Oct. 03, 2014USD ($)
Business Acquisition [Line Items]
Cost Basis	$ 514,125
Discount	(14,798)
Fair Value	499,327
PNCI [Member]
Business Acquisition [Line Items]
Cost Basis	502,637
Discount	(12,721)
Fair Value	489,916
PCI - Other [Member]
Business Acquisition [Line Items]
Cost Basis	11,488
Discount	(2,077)
Fair Value	$ 9,411

Business Combinations - Summa73

Business Combinations - Summary of Principal Balance Loans Acquired (Detail) - North Valley Bancorp [Member] $ in Thousands	Oct. 03, 2014USD ($)
Business Acquisition [Line Items]
Undiscounted contractual cash flows	$ 734,437
Undiscounted cash flows not expected to be collected (nonaccretable difference)	(6,295)
Undiscounted cash flows expected to be collected	728,142
Accretable yield at acquisition	(228,815)
Estimated fair value of loans acquired at acquisition	499,327
Purchase discount	14,798
Cost Basis	514,125
PNCI [Member]
Business Acquisition [Line Items]
Undiscounted contractual cash flows	718,731
Undiscounted cash flows expected to be collected	718,731
Accretable yield at acquisition	(228,815)
Estimated fair value of loans acquired at acquisition	489,916
Purchase discount	12,721
Cost Basis	502,637
PCI - Other [Member]
Business Acquisition [Line Items]
Undiscounted contractual cash flows	15,706
Undiscounted cash flows not expected to be collected (nonaccretable difference)	(6,295)
Undiscounted cash flows expected to be collected	9,411
Estimated fair value of loans acquired at acquisition	9,411
Purchase discount	2,077
Cost Basis	$ 11,488

Investment Securities - Amortiz

Investment Securities - Amortized Cost and Estimated Fair Values of Investments in Debt and Equity Securities (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 285,127	$ 79,165
Gross Unrealized Gains	3,350	4,065
Gross Unrealized Losses	(4,047)	(25)
Estimated Fair Value	284,430	83,205
Amortized Cost, Held to Maturity	776,283	676,426
Gross Unrealized Gains, Held to Maturity	6,971	13,185
Gross Unrealized Losses, Held to Maturity	(4,557)	(832)
Estimated Fair Value, Held to Maturity	778,697	688,779
Obligations of U.S. government corporations and agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	239,762	71,144
Gross Unrealized Gains	3,325	4,001
Gross Unrealized Losses	(2,535)	(25)
Estimated Fair Value	240,552	75,120
Amortized Cost, Held to Maturity	760,686	660,836
Gross Unrealized Gains, Held to Maturity	6,966	13,055
Gross Unrealized Losses, Held to Maturity	(4,113)	(677)
Estimated Fair Value, Held to Maturity	763,539	673,214
Obligations of states and political subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	40,467	3,130
Gross Unrealized Gains	23	45
Gross Unrealized Losses	(1,503)
Estimated Fair Value	38,987	3,175
Amortized Cost, Held to Maturity	15,597	15,590
Gross Unrealized Gains, Held to Maturity	5	130
Gross Unrealized Losses, Held to Maturity	(444)	(155)
Estimated Fair Value, Held to Maturity	15,158	15,565
Corporate debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,898	1,891
Gross Unrealized Gains	2	17
Estimated Fair Value	1,900	1,908
Marketable equity securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	3,000	3,000
Gross Unrealized Gains		2
Gross Unrealized Losses	(9)
Estimated Fair Value	$ 2,991	$ 3,002

Investment Securities - Additio

Investment Securities - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2015USD ($)Investmentsecurities	Jun. 30, 2014USD ($)	Dec. 31, 2014USD ($)
Investment Securities [Line Items]
Investment securities sold | $	$ 0	$ 0
Investment securities carrying value | $	245,800,000		$ 143,992,000
Mortgage-backed securities | $	$ 1,000,448,000
Life of mortgage-backed securities	6 years
Obligations of U.S. government corporations and agencies [Member]
Investment Securities [Line Items]
Debt securities	36
Percentage of aggregate depreciation in unrealized losses	(1.27%)
Obligations of states and political subdivisions [Member]
Investment Securities [Line Items]
Debt securities	48
Percentage of aggregate depreciation in unrealized losses	(3.76%)
Corporate debt securities [Member]
Investment Securities [Line Items]
Debt securities	0
Marketable equity securities [Member]
Investment Securities [Line Items]
Debt securities	1
Percentage of aggregate depreciation in unrealized losses	(0.30%)

Investment Securities - Amort76

Investment Securities - Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Due in one year, Amortized Cost	$ 1,898
Due after one year through five years, Amortized Cost	3,621
Due after five years through ten years, Amortized Cost	28,202
Due after ten years, Amortized Cost	251,406
Totals, Amortized Cost	285,127
Due in one year, Estimated Fair Value	1,900
Due after one year through five years, Estimated Fair Value	3,767
Due after five years through ten years, Estimated Fair Value	29,476
Due after ten years, Estimated Fair Value	249,287
Totals, Estimated Fair Value	284,430
Due in one year, Amortized Cost, Held to Maturity	0
Due after one year through five years, Amortized Cost, Held to Maturity	0
Due after five years through ten years, Amortized Cost, Held to Maturity	1,132
Due after ten years, Amortized Cost, Held to Maturity	775,151
Totals, Amortized Cost, Held to Maturity	776,283	$ 676,426
Due in one year, Estimated Fair Value, Held to Maturity	0
Due after one year through five years, Estimated Fair Value, Held to Maturity	0
Due after five years through ten years, Estimated Fair Value, Held to Maturity	1,134
Due after ten years, Estimated Fair Value, Held to Maturity	777,563
Estimated Fair Value, Held to Maturity	$ 778,697	$ 688,779

Investment Securities - Gross U

Investment Securities - Gross Unrealized Losses on Investment (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	$ 221,759	$ 6,774
Less than 12 months, Unrealized Loss	(4,047)	(25)
12 months or more, Fair Value	0	0
12 months or more, Unrealized Loss	0	0
Total Fair Value	221,759	6,774
Total Unrealized Loss	(4,047)	(25)
Less than 12 months, Fair Value, held to maturity	345,186	1,935
Less than 12 months, Unrealized Loss, held to maturity	(4,387)	(27)
12 months or more, Fair Value, held to maturity	1,049	58,146
12 months or more, Unrealized Loss, held to maturity	(170)	(805)
Total Fair Value, held to maturity	346,235	60,081
Total Unrealized Loss, held to maturity	(4,557)	(832)
Obligations of U.S. government corporations and agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	181,914	6,774
Less than 12 months, Unrealized Loss	(2,535)	(25)
12 months or more, Fair Value	0	0
12 months or more, Unrealized Loss	0	0
Total Fair Value	181,914	6,774
Total Unrealized Loss	(2,535)	(25)
Less than 12 months, Fair Value, held to maturity	333,283	335
Less than 12 months, Unrealized Loss, held to maturity	(4,113)	(1)
12 months or more, Fair Value, held to maturity		56,288
12 months or more, Unrealized Loss, held to maturity		(676)
Total Fair Value, held to maturity	333,283	56,623
Total Unrealized Loss, held to maturity	(4,113)	(677)
Obligations of states and political subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	36,854
Less than 12 months, Unrealized Loss	(1,503)
12 months or more, Fair Value	0	0
12 months or more, Unrealized Loss	0	0
Total Fair Value	36,854
Total Unrealized Loss	(1,503)
Less than 12 months, Fair Value, held to maturity	11,903	1,600
Less than 12 months, Unrealized Loss, held to maturity	(274)	(26)
12 months or more, Fair Value, held to maturity	1,049	1,858
12 months or more, Unrealized Loss, held to maturity	(170)	(129)
Total Fair Value, held to maturity	12,952	3,458
Total Unrealized Loss, held to maturity	(444)	(155)
Corporate debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
12 months or more, Fair Value	0	0
12 months or more, Unrealized Loss	0	0
Marketable equity securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	2,991
Less than 12 months, Unrealized Loss	(9)
12 months or more, Fair Value	0	0
12 months or more, Unrealized Loss	0	$ 0
Total Fair Value	2,991
Total Unrealized Loss	$ (9)

Loans - Summary of Loan Balance

Loans - Summary of Loan Balances (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013
Mortgage loans on real estate:
Total mortgage loan on real estate	$ 1,686,567		$ 1,615,359
Consumer:
Total consumer loans	411,788		417,084
Commercial	195,791		174,945
Construction:
Total construction	99,616		75,136
Total loans, net of deferred loan fees and discounts	2,393,762		2,282,524	$ 1,738,586
Total principal balance of loans owed, net of charge-offs	2,429,922		2,322,853
Unamortized net deferred loan fees	(4,764)		(4,793)
Discounts to principal balance of loans owed, net of charge-offs	(31,396)		(35,536)
Total loans, net of deferred loan fees and discounts	2,393,762		2,282,524	1,738,586
Noncovered loans	2,388,244		2,260,256
Covered loans	5,518		22,268
Total loans, net of unamortized deferred loan fees and discounts	2,393,762		2,282,524	1,738,586
Allowance for loan losses	(35,455)	$ (36,055)	(36,585)	(39,968)	$ (38,322)	$ (38,245)
Auto Indirect [Member]
Consumer:
Total consumer loans			112
Other [Member]
Consumer:
Total consumer loans	33,101		33,074
Residential 1-4 family [Member]
Mortgage loans on real estate:
Total mortgage loan on real estate	291,488		279,420
Commercial [Member]
Mortgage loans on real estate:
Total mortgage loan on real estate	1,395,079		1,335,939
Construction:
Total construction	57,658		36,518
Home equity lines of credit [Member]
Consumer:
Total consumer loans	344,115		352,584
Construction:
Total loans, net of deferred loan fees and discounts	344,115		352,584	330,187
Total loans, net of deferred loan fees and discounts	344,115		352,584	330,187
Total loans, net of unamortized deferred loan fees and discounts	344,115		352,584	330,187
Allowance for loan losses	(13,993)	$ (15,233)	(15,676)	$ (18,055)	$ (16,366)	$ (16,375)
Home equity loans [Member]
Consumer:
Total consumer loans	34,572		31,314
Residential [Member]
Construction:
Total construction	41,958		38,618
Originated [Member]
Mortgage loans on real estate:
Total mortgage loan on real estate	1,192,673		1,083,391
Consumer:
Total consumer loans	359,976		357,067
Commercial	157,283		126,611
Construction:
Total construction	69,809		45,680
Total loans, net of deferred loan fees and discounts	1,779,741		1,612,749
Total principal balance of loans owed, net of charge-offs	1,784,505		1,617,542
Unamortized net deferred loan fees	(4,764)		(4,793)
Total loans, net of deferred loan fees and discounts	1,779,741		1,612,749
Noncovered loans	1,779,741		1,612,749
Total loans, net of unamortized deferred loan fees and discounts	1,779,741		1,612,749
Allowance for loan losses	29,470		(29,860)
Originated [Member] | Auto Indirect [Member]
Consumer:
Total consumer loans			112
Originated [Member] | Other [Member]
Consumer:
Total consumer loans	29,057		28,230
Originated [Member] | Residential 1-4 family [Member]
Mortgage loans on real estate:
Total mortgage loan on real estate	173,623		154,594
Originated [Member] | Commercial [Member]
Mortgage loans on real estate:
Total mortgage loan on real estate	1,019,050		928,797
Construction:
Total construction	43,526		24,545
Originated [Member] | Home equity lines of credit [Member]
Consumer:
Total consumer loans	301,696		305,166
Originated [Member] | Home equity loans [Member]
Consumer:
Total consumer loans	29,223		23,559
Originated [Member] | Residential [Member]
Construction:
Total construction	26,283		21,135
PNCI [Member]
Mortgage loans on real estate:
Total mortgage loan on real estate	462,499		497,046
Consumer:
Total consumer loans	42,791		50,152
Commercial	33,407		40,899
Construction:
Total construction	29,084		28,781
Total loans, net of deferred loan fees and discounts	567,781		616,878
Total principal balance of loans owed, net of charge-offs	583,746		634,490
Discounts to principal balance of loans owed, net of charge-offs	(15,965)		(17,612)
Total loans, net of deferred loan fees and discounts	567,781		616,878
Noncovered loans	567,781		616,878
Total loans, net of unamortized deferred loan fees and discounts	567,781		616,878
Allowance for loan losses	2,763		(3,296)
PNCI [Member] | Other [Member]
Consumer:
Total consumer loans	3,977		4,770
PNCI [Member] | Residential 1-4 family [Member]
Mortgage loans on real estate:
Total mortgage loan on real estate	113,991		120,821
PNCI [Member] | Commercial [Member]
Mortgage loans on real estate:
Total mortgage loan on real estate	348,508		376,225
Construction:
Total construction	14,132		11,973
PNCI [Member] | Home equity lines of credit [Member]
Consumer:
Total consumer loans	34,227		38,397
PNCI [Member] | Home equity loans [Member]
Consumer:
Total consumer loans	4,587		6,985
PNCI [Member] | Residential [Member]
Construction:
Total construction	14,952		16,808
PCI - Cash basis [Member]
Consumer:
Total consumer loans	5,394		5,603
Commercial	4		8
Construction:
Total loans, net of deferred loan fees and discounts	5,398		5,611
Total principal balance of loans owed, net of charge-offs	13,865		14,805
Discounts to principal balance of loans owed, net of charge-offs	(8,467)		(9,194)
Total loans, net of deferred loan fees and discounts	5,398		5,611
Noncovered loans	5,398		5,611
Total loans, net of unamortized deferred loan fees and discounts	5,398		5,611
Allowance for loan losses	312		(348)
PCI - Cash basis [Member] | Home equity lines of credit [Member]
Consumer:
Total consumer loans	5,269		5,478
PCI - Cash basis [Member] | Home equity loans [Member]
Consumer:
Total consumer loans	125		125
PCI - Other [Member]
Mortgage loans on real estate:
Total mortgage loan on real estate	31,395		34,922
Consumer:
Total consumer loans	3,627		4,262
Commercial	5,097		7,427
Construction:
Total construction	723		675
Total loans, net of deferred loan fees and discounts	40,842		47,286
Total principal balance of loans owed, net of charge-offs	47,806		56,016
Discounts to principal balance of loans owed, net of charge-offs	(6,964)		(8,730)
Total loans, net of deferred loan fees and discounts	40,842		47,286
Noncovered loans	35,324		25,018
Covered loans	5,518		22,268
Total loans, net of unamortized deferred loan fees and discounts	40,842		47,286
Allowance for loan losses	2,910		(3,081)
PCI - Other [Member] | Other [Member]
Consumer:
Total consumer loans	67		74
PCI - Other [Member] | Residential 1-4 family [Member]
Mortgage loans on real estate:
Total mortgage loan on real estate	3,874		4,005
PCI - Other [Member] | Commercial [Member]
Mortgage loans on real estate:
Total mortgage loan on real estate	27,521		30,917
PCI - Other [Member] | Home equity lines of credit [Member]
Consumer:
Total consumer loans	2,923		3,543
PCI - Other [Member] | Home equity loans [Member]
Consumer:
Total consumer loans	637		645
PCI - Other [Member] | Residential [Member]
Construction:
Total construction	$ 723		$ 675

Loans - Change in Accretable Yi

Loans - Change in Accretable Yield for PCI (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Change in accretable yield:
Balance at beginning of period	$ 13,402	$ 17,438	$ 14,159	$ 18,232
Accretion to interest income	(1,375)	(1,382)	(2,930)	(3,013)
Reclassification from nonaccretable difference	920	242	1,718	1,079
Balance at end of period	$ 12,947	$ 16,298	$ 12,947	$ 16,298

Allowance for Loan Losses - Sum

Allowance for Loan Losses - Summary of Activity in Allowance for Loan Losses, and Ending Balance of Loans, Net of Unearned Fees for Periods Indicated (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	$ 2,393,762	$ 1,738,586	$ 2,393,762	$ 1,738,586	$ 2,282,524
Individ. evaluated for impairment	65,025	72,868	65,025	72,868	62,246
Loans pooled for evaluation	2,282,497	1,614,327	2,282,497	1,614,327	2,167,381
Loans acquired with deteriorated credit quality	46,240	51,391	46,240	51,391	52,897
Beginning balance	36,055	38,322	36,585	38,245	38,245
Charge-offs	(514)	(1,029)	(1,749)	(1,794)	(2,558)
Recoveries	547	967	1,055	3,164	4,943
(Benefit) provision	(633)	1,708	(436)	353	(4,045)
Ending balance	35,455	39,968	35,455	39,968	36,585
Ending balance:
Individ. evaluated for impairment	4,245	3,940	4,245	3,940	4,267
Loans pooled for evaluation	27,988	31,752	27,988	31,752	28,891
Home equity lines of credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	344,115	330,187	344,115	330,187	352,584
Individ. evaluated for impairment	6,135	6,987	6,135	6,987	6,968
Loans pooled for evaluation	329,788	313,843	329,788	313,843	336,595
Loans acquired with deteriorated credit quality	8,192	9,357	8,192	9,357	9,021
Beginning balance	15,233	16,366	15,676	16,375	16,375
Charge-offs	(84)	(677)	(425)	(855)	(1,094)
Recoveries	230	180	349	509	960
(Benefit) provision	(1,386)	2,186	(1,607)	2,026	(565)
Ending balance	13,993	18,055	13,993	18,055	15,676
Ending balance:
Individ. evaluated for impairment	1,779	2,088	1,779	2,088	1,974
Loans pooled for evaluation	11,798	15,466	11,798	15,466	13,251
Other Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	33,101	28,676	33,101	28,676	33,074
Individ. evaluated for impairment	403	77	403	77	323
Loans pooled for evaluation	32,631	28,529	32,631	28,529	32,677
Loans acquired with deteriorated credit quality	67	70	67	70	74
Beginning balance	644	590	719	589	589
Charge-offs	(176)	(144)	(444)	(271)	(599)
Recoveries	107	119	259	302	495
(Benefit) provision	130	(9)	171	(64)	234
Ending balance	705	556	705	556	719
Ending balance:
Individ. evaluated for impairment	128	3	128	3	142
Loans pooled for evaluation	577	553	577	553	572
Construction [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	41,958	42,097	41,958	42,097	38,618
Individ. evaluated for impairment	328	2,751	328	2,751	2,683
Loans pooled for evaluation	40,907	37,844	40,907	37,844	35,260
Loans acquired with deteriorated credit quality	723	1,502	723	1,502	675
Beginning balance	750	1,501	1,434	1,559	1,559
Charge-offs				(4)	(4)
Recoveries		97	11	608	1,377
(Benefit) provision	92	(87)	(603)	(652)	(1,498)
Ending balance	842	1,511	842	1,511	1,434
Ending balance:
Individ. evaluated for impairment		61		61	60
Loans pooled for evaluation	653	720	653	720	332
Construction [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	57,658	14,149	57,658	14,149	35,518
Individ. evaluated for impairment	88	16	88	16	99
Loans pooled for evaluation	57,570	14,068	57,570	14,068	36,419
Loans acquired with deteriorated credit quality		65		65
Beginning balance	250	1,538	411	1,263	1,263
Charge-offs				(69)	(69)
Recoveries	14	20	33	135	181
(Benefit) provision	145	(221)	(35)	8	(964)
Ending balance	409	1,337	409	1,337	411
Ending balance:
Loans pooled for evaluation	409	779	409	779	322
RE Mortgage [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	291,488	212,920	291,488	212,920	279,420
Individ. evaluated for impairment	7,467	7,397	7,467	7,397	7,188
Loans pooled for evaluation	280,147	201,680	280,147	201,680	268,227
Loans acquired with deteriorated credit quality	3,874	3,843	3,874	3,843	4,005
Beginning balance	2,765	2,980	3,086	3,154	3,154
Charge-offs	(128)	(1)	(209)	(136)	(171)
Recoveries			1		2
(Benefit) provision	198	(147)	(43)	(186)	101
Ending balance	2,835	2,832	2,835	2,832	3,086
Ending balance:
Individ. evaluated for impairment	857	780	857	780	974
Loans pooled for evaluation	1,884	1,869	1,884	1,869	1,915
RE Mortgage [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,395,079	954,936	1,395,079	954,936	1,335,939
Individ. evaluated for impairment	47,118	52,570	47,118	52,570	41,932
Loans pooled for evaluation	1,320,440	872,399	1,320,440	872,399	1,263,090
Loans acquired with deteriorated credit quality	27,521	29,967	27,521	29,967	30,917
Beginning balance	10,451	9,875	9,227	9,700	9,700
Charge-offs		(45)		(58)	(110)
Recoveries	53	299	149	471	540
(Benefit) provision	(363)	(298)	765	(282)	(903)
Ending balance	10,141	9,831	10,141	9,831	9,227
Ending balance:
Individ. evaluated for impairment	418	392	418	392	410
Loans pooled for evaluation	8,390	8,605	8,390	8,605	8,408
Home equity loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	34,572	17,895	34,572	17,895	31,314
Individ. evaluated for impairment	1,438	871	1,438	871	1,278
Loans pooled for evaluation	32,372	16,412	32,372	16,412	29,266
Loans acquired with deteriorated credit quality	762	612	762	612	770
Beginning balance	1,980	1,291	1,797	1,208	1,208
Charge-offs	(117)	(11)	(128)	(11)	(29)
Recoveries	6	25	9	27	34
(Benefit) provision	259	106	450	187	584
Ending balance	2,128	1,411	2,128	1,411	1,797
Ending balance:
Individ. evaluated for impairment	387	211	387	211	284
Loans pooled for evaluation	1,741	1,199	1,741	1,199	1,513
Auto Indirect [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans		385		385	112
Individ. evaluated for impairment		40		40	18
Loans pooled for evaluation		345		345	94
Beginning balance	6	45	9	66	66
Charge-offs	(4)		(4)		(3)
Recoveries	16	39	36	51	86
(Benefit) provision	(18)	(56)	(41)	(89)	(140)
Ending balance		28		28	9
Ending balance:
Loans pooled for evaluation		27		27	9
C&I [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	195,791	137,341	195,791	137,341	174,945
Individ. evaluated for impairment	2,048	2,159	2,048	2,159	1,757
Loans pooled for evaluation	188,642	129,207	188,642	129,207	165,753
Loans acquired with deteriorated credit quality	5,101	5,975	5,101	5,975	7,435
Beginning balance	3,976	4,136	4,226	4,331	4,331
Charge-offs	(5)	(151)	(539)	(390)	(479)
Recoveries	121	188	208	1,061	1,268
(Benefit) provision	310	234	507	(595)	(894)
Ending balance	4,402	4,407	4,402	4,407	4,226
Ending balance:
Individ. evaluated for impairment	676	405	676	405	423
Loans pooled for evaluation	2,536	2,534	2,536	2,534	2,569
Receivables Acquired with Deteriorated Credit Quality [Member]
Ending balance:
Loans acquired with deteriorated credit quality	3,222	4,276	3,222	4,276	3,427
Receivables Acquired with Deteriorated Credit Quality [Member] | Home equity lines of credit [Member]
Ending balance:
Loans acquired with deteriorated credit quality	416	499	416	499	451
Receivables Acquired with Deteriorated Credit Quality [Member] | Other Consumer [Member]
Ending balance:
Loans acquired with deteriorated credit quality					5
Receivables Acquired with Deteriorated Credit Quality [Member] | Construction [Member] | Residential [Member]
Ending balance:
Loans acquired with deteriorated credit quality	189	730	189	730	1,042
Receivables Acquired with Deteriorated Credit Quality [Member] | Construction [Member] | Commercial [Member]
Ending balance:
Loans acquired with deteriorated credit quality		558		558	89
Receivables Acquired with Deteriorated Credit Quality [Member] | RE Mortgage [Member] | Residential [Member]
Ending balance:
Loans acquired with deteriorated credit quality	94	185	94	185	197
Receivables Acquired with Deteriorated Credit Quality [Member] | RE Mortgage [Member] | Commercial [Member]
Ending balance:
Loans acquired with deteriorated credit quality	1,333	835	1,333	835	409
Receivables Acquired with Deteriorated Credit Quality [Member] | C&I [Member]
Ending balance:
Loans acquired with deteriorated credit quality	$ 1,190	$ 1,469	$ 1,190	$ 1,469	$ 1,234

Allowance for Loan Losses - Pre

Allowance for Loan Losses - Presentation of Credit Quality Indicators (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	$ 2,393,762	$ 2,282,524	$ 1,738,586
Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,779,741	1,612,749
PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	567,781	616,878
PCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	46,240	52,897
Pass [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,712,191	1,537,988
Pass [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	542,103	596,332
Special mention [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	18,557	18,836
Special mention [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	14,324	15,107
Substandard [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	48,993	55,925
Substandard [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	11,354	5,439
Residential [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	41,958	38,618	42,097
Residential [Member] | Originated loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	26,283	21,135
Residential [Member] | PNCI loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	14,952	16,808
Residential [Member] | PCI loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	723	675
Residential [Member] | Pass [Member] | Originated loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	25,575	18,112
Residential [Member] | Pass [Member] | PNCI loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	14,952	16,808
Residential [Member] | Special mention [Member] | Originated loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	661	622
Residential [Member] | Substandard [Member] | Originated loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	47	2,401
Commercial [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	57,658	35,518	14,149
Commercial [Member] | Originated loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	43,526	24,545
Commercial [Member] | PNCI loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	14,132	11,973
Commercial [Member] | Pass [Member] | Originated loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	42,852	24,436
Commercial [Member] | Pass [Member] | PNCI loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	14,132	11,973
Commercial [Member] | Special mention [Member] | Originated loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	585
Commercial [Member] | Substandard [Member] | Originated loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	89	109
Home equity lines of credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	344,115	352,584	330,187
Home equity lines of credit [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	301,696	305,166
Home equity lines of credit [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	34,227	38,397
Home equity lines of credit [Member] | PCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	8,192	9,021
Home equity lines of credit [Member] | Pass [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	290,529	292,244
Home equity lines of credit [Member] | Pass [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	32,392	36,531
Home equity lines of credit [Member] | Special mention [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	3,046	3,590
Home equity lines of credit [Member] | Special mention [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	452	936
Home equity lines of credit [Member] | Substandard [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	8,121	9,332
Home equity lines of credit [Member] | Substandard [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,383	930
Other Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	33,101	33,074	28,676
Other Consumer [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	29,057	28,230
Other Consumer [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	3,977	4,770
Other Consumer [Member] | PCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	67	74
Other Consumer [Member] | Pass [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	28,341	27,396
Other Consumer [Member] | Pass [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	3,670	4,399
Other Consumer [Member] | Special mention [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	461	591
Other Consumer [Member] | Special mention [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	88	230
Other Consumer [Member] | Substandard [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	255	243
Other Consumer [Member] | Substandard [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	219	141
RE Mortgage [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	291,488	279,420	212,920
RE Mortgage [Member] | Residential [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	173,623	154,594
RE Mortgage [Member] | Residential [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	113,991	120,821
RE Mortgage [Member] | Residential [Member] | PCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	3,874	4,005
RE Mortgage [Member] | Residential [Member] | Pass [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	165,857	146,949
RE Mortgage [Member] | Residential [Member] | Pass [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	112,680	119,643
RE Mortgage [Member] | Residential [Member] | Special mention [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,311	1,122
RE Mortgage [Member] | Residential [Member] | Special mention [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	346	547
RE Mortgage [Member] | Residential [Member] | Substandard [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	6,455	6,523
RE Mortgage [Member] | Residential [Member] | Substandard [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	965	631
RE Mortgage [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,395,079	1,335,939	954,936
RE Mortgage [Member] | Commercial [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,019,050	928,797
RE Mortgage [Member] | Commercial [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	348,508	376,225
RE Mortgage [Member] | Commercial [Member] | PCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	27,521	30,917
RE Mortgage [Member] | Commercial [Member] | Pass [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	977,037	883,102
RE Mortgage [Member] | Commercial [Member] | Pass [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	327,833	359,537
RE Mortgage [Member] | Commercial [Member] | Special mention [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	10,479	11,521
RE Mortgage [Member] | Commercial [Member] | Special mention [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	13,337	12,979
RE Mortgage [Member] | Commercial [Member] | Substandard [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	31,534	34,174
RE Mortgage [Member] | Commercial [Member] | Substandard [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	7,338	3,709
Home equity loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	34,572	31,314	17,895
Home equity loans [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	29,223	23,559
Home equity loans [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	4,587	6,985
Home equity loans [Member] | PCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	762	770
Home equity loans [Member] | Pass [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	26,015	20,976
Home equity loans [Member] | Pass [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	4,344	6,813
Home equity loans [Member] | Special mention [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,160	743
Home equity loans [Member] | Special mention [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	101	147
Home equity loans [Member] | Substandard [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	2,048	1,840
Home equity loans [Member] | Substandard [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	142	25
Auto Indirect [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans		112	385
Auto Indirect [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans		112
Auto Indirect [Member] | Pass [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans		66
Auto Indirect [Member] | Special mention [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans		11
Auto Indirect [Member] | Substandard [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans		35
C&I [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	195,791	174,945	$ 137,341
C&I [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	157,283	126,611
C&I [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	33,407	40,899
C&I [Member] | PCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	5,101	7,435
C&I [Member] | Pass [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	155,985	124,707
C&I [Member] | Pass [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	32,100	40,628
C&I [Member] | Special mention [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	854	636
C&I [Member] | Special mention [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans		268
C&I [Member] | Substandard [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	444	1,268
C&I [Member] | Substandard [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	$ 1,307	$ 3

Allowance for Loan Losses - Add

Allowance for Loan Losses - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2015USD ($)Category	Dec. 31, 2014USD ($)	Jun. 30, 2014USD ($)
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of categories occupied under commercial real estate loans | Category	2
Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Impaired TDRs Loans	$ 43,047,000	$ 45,676,000	$ 53,476,000
Additional funds in TDRs	62,000	54,000	0
PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Impaired TDRs Loans	1,091,000	1,307,000	1,227,000
Obligations to lend additional funds on TDRs	$ 0	$ 0	$ 0
Minimum [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Period of collateral payment of loan	3 months
Maximum [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Period of collateral payment of loan	12 months

Allowance for Loan Losses - Ana

Allowance for Loan Losses - Analysis of Past Due and Nonaccrual Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 9,496	$ 9,129
Current	1,770,245	1,603,620
Total orig. loans	1,779,741	1,612,749
> 90 Days and still accruing	0	0
Nonaccrual loans	23,812	32,529
PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2,154	3,226
Current	565,627	613,652
Total orig. loans	567,781	616,878
> 90 Days and still accruing	0	0
Nonaccrual loans	5,863	1,646
30-59 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	3,266	5,519
30-59 Days [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	934	2,668
60-89 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	3,905	1,530
60-89 Days [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	363	145
> 90 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2,325	2,080
> 90 Days [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	857	413
RE Mortgage [Member] | Residential [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,284	2,315
Current	172,339	152,279
Total orig. loans	173,623	154,594
> 90 Days and still accruing	0	0
Nonaccrual loans	3,914	3,430
RE Mortgage [Member] | Residential [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	33	2,304
Current	113,958	118,517
Total orig. loans	113,991	120,821
> 90 Days and still accruing	0	0
Nonaccrual loans	622	799
RE Mortgage [Member] | Residential [Member] | 30-59 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	256	1,296
RE Mortgage [Member] | Residential [Member] | 30-59 Days [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		2,041
RE Mortgage [Member] | Residential [Member] | 60-89 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	375	919
RE Mortgage [Member] | Residential [Member] | 60-89 Days [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		24
RE Mortgage [Member] | Residential [Member] | > 90 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	653	100
RE Mortgage [Member] | Residential [Member] | > 90 Days [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	33	239
RE Mortgage [Member] | Commercial [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	4,174	1,635
Current	1,014,876	927,162
Total orig. loans	1,019,050	928,797
> 90 Days and still accruing	0	0
Nonaccrual loans	14,957	20,736
RE Mortgage [Member] | Commercial [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,349	260
Current	347,159	375,965
Total orig. loans	348,508	376,225
> 90 Days and still accruing	0	0
Nonaccrual loans	4,316	366
RE Mortgage [Member] | Commercial [Member] | 30-59 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	589	735
RE Mortgage [Member] | Commercial [Member] | 30-59 Days [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	883	260
RE Mortgage [Member] | Commercial [Member] | 60-89 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2,874
RE Mortgage [Member] | Commercial [Member] | > 90 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	711	900
RE Mortgage [Member] | Commercial [Member] | > 90 Days [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	466
Home equity lines of credit [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,821	3,116
Current	299,875	302,050
Total orig. loans	301,696	305,166
> 90 Days and still accruing	0	0
Nonaccrual loans	3,246	4,336
Home equity lines of credit [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	531	466
Current	33,696	37,931
Total orig. loans	34,227	38,397
> 90 Days and still accruing	0	0
Nonaccrual loans	733	346
Home equity lines of credit [Member] | 30-59 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	867	2,066
Home equity lines of credit [Member] | 30-59 Days [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		275
Home equity lines of credit [Member] | 60-89 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	488	296
Home equity lines of credit [Member] | 60-89 Days [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	271	118
Home equity lines of credit [Member] | > 90 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	466	754
Home equity lines of credit [Member] | > 90 Days [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	260	73
Home equity loans [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,028	1,009
Current	28,195	22,550
Total orig. loans	29,223	23,559
> 90 Days and still accruing	0	0
Nonaccrual loans	1,262	1,197
Home equity loans [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	42	25
Current	4,545	6,960
Total orig. loans	4,587	6,985
> 90 Days and still accruing	0	0
Nonaccrual loans	61	25
Home equity loans [Member] | 30-59 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	514	615
Home equity loans [Member] | 30-59 Days [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	42
Home equity loans [Member] | 60-89 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	166	192
Home equity loans [Member] | > 90 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	348	202
Home equity loans [Member] | > 90 Days [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		25
Auto Indirect [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		21
Current		91
Total orig. loans		112
> 90 Days and still accruing	0	0
Nonaccrual loans		18
Auto Indirect [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
> 90 Days and still accruing	0	0
Auto Indirect [Member] | 30-59 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		4
Auto Indirect [Member] | > 90 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		17
Other Consumer [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	103	134
Current	28,954	28,096
Total orig. loans	29,057	28,230
> 90 Days and still accruing	0	0
Nonaccrual loans	60	66
Other Consumer [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	199	104
Current	3,778	4,666
Total orig. loans	3,977	4,770
> 90 Days and still accruing	0	0
Nonaccrual loans	131	110
Other Consumer [Member] | 30-59 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	44	64
Other Consumer [Member] | 30-59 Days [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	9	25
Other Consumer [Member] | 60-89 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2	24
Other Consumer [Member] | 60-89 Days [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	92	3
Other Consumer [Member] | > 90 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	57	46
Other Consumer [Member] | > 90 Days [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	98	76
C&I [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	665	899
Current	156,618	125,712
Total orig. loans	157,283	126,611
> 90 Days and still accruing	0	0
Nonaccrual loans	238	246
C&I [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		67
Current	33,407	40,832
Total orig. loans	33,407	40,899
> 90 Days and still accruing	0	0
C&I [Member] | 30-59 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	589	739
C&I [Member] | 30-59 Days [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		67
C&I [Member] | 60-89 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		99
C&I [Member] | > 90 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	76	61
Construction [Member] | Residential [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	421
Current	25,862	21,135
Total orig. loans	26,283	21,135
> 90 Days and still accruing	0	0
Nonaccrual loans	47	2,401
Construction [Member] | Residential [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	14,952	16,808
Total orig. loans	14,952	16,808
> 90 Days and still accruing	0	0
Construction [Member] | Residential [Member] | 30-59 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	407
Construction [Member] | Residential [Member] | > 90 Days [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	14
Construction [Member] | Commercial [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	43,526	24,545
Total orig. loans	43,526	24,545
> 90 Days and still accruing	0	0
Nonaccrual loans	88	99
Construction [Member] | Commercial [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	14,132	11,973
Total orig. loans	14,132	11,973
> 90 Days and still accruing	$ 0	$ 0

Allowance for Loan Losses - Imp

Allowance for Loan Losses - Impaired Loans (Detail) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	$ 48,095	$ 59,734	$ 48,466
Unpaid principal, With no related allowance recorded	57,909	72,767	61,660
Average recorded Investment, With no related allowance recorded	48,279	65,857	57,354
Interest income Recognized, With no related allowance recorded	836	711	1,095
Recorded investment, With an allowance recorded	9,999	11,076	11,021
Unpaid principal, With an allowance recorded	10,938	12,107	11,863
Related allowance, With an allowance recorded	3,518	3,394	3,646
Average recorded Investment, With an allowance recorded	10,510	13,504	11,938
Interest income Recognized, With an allowance recorded	166	181	409
PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	4,626	985	1,124
Unpaid principal, With no related allowance recorded	4,813	3,183	3,433
Average recorded Investment, With no related allowance recorded	2,875	1,254	1,344
Interest income Recognized, With no related allowance recorded	78	5	14
Recorded investment, With an allowance recorded	2,306	1,073	1,636
Unpaid principal, With an allowance recorded	2,334	1,094	1,654
Related allowance, With an allowance recorded	727	546	621
Average recorded Investment, With an allowance recorded	1,972	793	1,107
Interest income Recognized, With an allowance recorded	31	17	48
RE Mortgage [Member] | Residential [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	3,770	4,002	3,287
Unpaid principal, With no related allowance recorded	5,901	6,227	5,138
Average recorded Investment, With no related allowance recorded	3,528	4,228	3,826
Interest income Recognized, With no related allowance recorded	19	23	38
Recorded investment, With an allowance recorded	2,780	2,821	2,724
Unpaid principal, With an allowance recorded	2,958	2,893	2,865
Related allowance, With an allowance recorded	784	625	797
Average recorded Investment, With an allowance recorded	2,752	2,594	2,677
Interest income Recognized, With an allowance recorded	40	34	91
RE Mortgage [Member] | Residential [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	290	144	343
Unpaid principal, With no related allowance recorded	316	144	353
Average recorded Investment, With no related allowance recorded	317	94	246
Interest income Recognized, With no related allowance recorded	3	6	14
Recorded investment, With an allowance recorded	627	430	834
Unpaid principal, With an allowance recorded	643	442	852
Related allowance, With an allowance recorded	72	155	177
Average recorded Investment, With an allowance recorded	731	352	516
Interest income Recognized, With an allowance recorded	4	4	8
RE Mortgage [Member] | Commercial [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	40,294	48,781	38,477
Unpaid principal, With no related allowance recorded	44,441	51,862	41,949
Average recorded Investment, With no related allowance recorded	39,385	54,387	45,915
Interest income Recognized, With no related allowance recorded	795	651	995
Recorded investment, With an allowance recorded	2,365	3,163	2,943
Unpaid principal, With an allowance recorded	2,448	3,324	3,101
Related allowance, With an allowance recorded	216	282	302
Average recorded Investment, With an allowance recorded	2,654	5,012	4,119
Interest income Recognized, With an allowance recorded	56	76	144
RE Mortgage [Member] | Commercial [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	3,633	478	366
Unpaid principal, With no related allowance recorded	3,713	2,648	2,620
Average recorded Investment, With no related allowance recorded	1,999	822	753
Interest income Recognized, With no related allowance recorded	74
Recorded investment, With an allowance recorded	826	148	146
Unpaid principal, With an allowance recorded	836	148	146
Related allowance, With an allowance recorded	203	110	108
Average recorded Investment, With an allowance recorded	486	153	148
Interest income Recognized, With an allowance recorded	12	4	8
Home equity lines of credit [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	2,475	2,641	3,001
Unpaid principal, With no related allowance recorded	5,340	5,592	6,094
Average recorded Investment, With no related allowance recorded	2,738	3,419	3,355
Interest income Recognized, With no related allowance recorded	2	5	26
Recorded investment, With an allowance recorded	2,513	3,559	3,185
Unpaid principal, With an allowance recorded	2,973	4,231	3,533
Related allowance, With an allowance recorded	1,481	1,810	1,769
Average recorded Investment, With an allowance recorded	2,849	3,196	2,982
Interest income Recognized, With an allowance recorded	25	35	71
Home equity lines of credit [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	637	320	346
Unpaid principal, With no related allowance recorded	696	337	374
Average recorded Investment, With no related allowance recorded	492	291	287
Interest income Recognized, With no related allowance recorded	1	(1)	(1)
Recorded investment, With an allowance recorded	511	467	436
Unpaid principal, With an allowance recorded	512	476	436
Related allowance, With an allowance recorded	298	278	205
Average recorded Investment, With an allowance recorded	474	260	319
Interest income Recognized, With an allowance recorded	9	8	20
Home equity loans [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	779	626	750
Unpaid principal, With no related allowance recorded	1,256	1,032	1,187
Average recorded Investment, With no related allowance recorded	764	540	651
Interest income Recognized, With no related allowance recorded		1	6
Recorded investment, With an allowance recorded	598	245	504
Unpaid principal, With an allowance recorded	704	325	597
Related allowance, With an allowance recorded	346	211	284
Average recorded Investment, With an allowance recorded	551	204	365
Interest income Recognized, With an allowance recorded	3	2	13
Home equity loans [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	20		25
Unpaid principal, With no related allowance recorded	22		25
Average recorded Investment, With no related allowance recorded	22		12
Recorded investment, With an allowance recorded	41
Unpaid principal, With an allowance recorded	42
Related allowance, With an allowance recorded	41
Average recorded Investment, With an allowance recorded	20
Auto Indirect [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded		33	14
Unpaid principal, With no related allowance recorded		70	49
Average recorded Investment, With no related allowance recorded		49	35
Recorded investment, With an allowance recorded		7	4
Unpaid principal, With an allowance recorded		10	6
Average recorded Investment, With an allowance recorded		5	4
Other Consumer [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	23	16	25
Unpaid principal, With no related allowance recorded	46	22	32
Average recorded Investment, With no related allowance recorded	31	21	21
Interest income Recognized, With no related allowance recorded			1
Recorded investment, With an allowance recorded	37		41
Unpaid principal, With an allowance recorded	47		41
Related allowance, With an allowance recorded	15		11
Average recorded Investment, With an allowance recorded	41	6	25
Other Consumer [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	42	33	37
Unpaid principal, With no related allowance recorded	62	44	54
Average recorded Investment, With no related allowance recorded	40	35	36
Recorded investment, With an allowance recorded	301	28	220
Unpaid principal, With an allowance recorded	301	28	220
Related allowance, With an allowance recorded	113	3	131
Average recorded Investment, With an allowance recorded	261	28	124
Interest income Recognized, With an allowance recorded	6	1	12
C&I [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	338	1,151	412
Unpaid principal, With no related allowance recorded	366	1,174	433
Average recorded Investment, With no related allowance recorded	375	1,266	1,030
Interest income Recognized, With no related allowance recorded	11	31	26
Recorded investment, With an allowance recorded	1,706	998	1,338
Unpaid principal, With an allowance recorded	1,808	1,041	1,438
Related allowance, With an allowance recorded	676	405	423
Average recorded Investment, With an allowance recorded	1,522	1,524	1,428
Interest income Recognized, With an allowance recorded	42	25	71
C&I [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	4	10	7
Unpaid principal, With no related allowance recorded	4	10	7
Average recorded Investment, With no related allowance recorded	5	12	10
Interest income Recognized, With no related allowance recorded			1
Construction [Member] | Residential [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	328	2,468	2,401
Unpaid principal, With no related allowance recorded	376	6,689	6,588
Average recorded Investment, With no related allowance recorded	1,364	1,904	2,437
Interest income Recognized, With no related allowance recorded	9
Recorded investment, With an allowance recorded		283	282
Unpaid principal, With an allowance recorded		283	282
Related allowance, With an allowance recorded		61	60
Average recorded Investment, With an allowance recorded	141	890	283
Interest income Recognized, With an allowance recorded		9	19
Construction [Member] | Commercial [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	88	16	99
Unpaid principal, With no related allowance recorded	183	99	190
Average recorded Investment, With no related allowance recorded	$ 94	43	84
Interest income Recognized, With no related allowance recorded			3
Average recorded Investment, With an allowance recorded		$ 73	$ 55

Allowance for Loan Losses - Tro

Allowance for Loan Losses - Troubled Debt Restructurings (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)SecurityLoan	Jun. 30, 2014USD ($)SecurityLoan	Jun. 30, 2015USD ($)SecurityLoan	Jun. 30, 2014USD ($)SecurityLoan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number | SecurityLoan	3	7	8	16
Pre-mod outstanding principal balance	$ 251	$ 946	$ 858	$ 2,433
Post-mod outstanding principal balance	255	962	867	2,417
Financial impact due to TDR taken as additional provision	$ 86	$ 12	$ 257	$ 76
Number that defaulted during the period | SecurityLoan	2	2	3	4
Recorded investment of TDRs that defaulted during the period	$ 135	$ 315	$ 181	$ 691
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions	0	$ 0	$ 0	$ 0
Home equity lines of credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number | SecurityLoan		1		3
Pre-mod outstanding principal balance		$ 200		$ 479
Post-mod outstanding principal balance		212		491
Number that defaulted during the period | SecurityLoan			1
Recorded investment of TDRs that defaulted during the period			$ 46
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions	$ 0	$ 0	$ 0	$ 0
RE Mortgage [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number | SecurityLoan		1	1	3
Pre-mod outstanding principal balance		$ 112	$ 108	$ 806
Post-mod outstanding principal balance		$ 112	110	806
Financial impact due to TDR taken as additional provision			$ 8	$ 37
Number that defaulted during the period | SecurityLoan	1	1	1	1
Recorded investment of TDRs that defaulted during the period	$ 98	$ 152	$ 98	$ 152
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions	$ 0	$ 0	$ 0	$ 0
RE Mortgage [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number | SecurityLoan		2	1	4
Pre-mod outstanding principal balance		$ 568	$ 124	$ 824
Post-mod outstanding principal balance		571	124	830
Financial impact due to TDR taken as additional provision		$ 8	$ (5)	$ 18
Number that defaulted during the period | SecurityLoan	1	1	1	2
Recorded investment of TDRs that defaulted during the period	$ 37	$ 163	$ 37	$ 423
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions	$ 0	$ 0	$ 0	$ 0
Home equity loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number | SecurityLoan	1	1	1	1
Pre-mod outstanding principal balance	$ 69	$ 32	$ 69	$ 32
Post-mod outstanding principal balance	73	33	74	33
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions	0	0	0	0
Auto Indirect [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions	0	0	$ 0	0
Other Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number | SecurityLoan			2
Pre-mod outstanding principal balance			$ 89
Post-mod outstanding principal balance			89
Financial impact due to TDR taken as additional provision			5
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions	$ 0	$ 0	$ 0	$ 0
C&I [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number | SecurityLoan	2	2	3	3
Pre-mod outstanding principal balance	$ 182	$ 34	$ 468	$ 72
Post-mod outstanding principal balance	182	34	470	72
Financial impact due to TDR taken as additional provision	86	4	249	$ 21
Number that defaulted during the period | SecurityLoan				1
Recorded investment of TDRs that defaulted during the period				$ 116
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions	0	0	0	$ 0
Construction [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number | SecurityLoan				1
Pre-mod outstanding principal balance				$ 102
Post-mod outstanding principal balance				85
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions	0	0	0	$ 0
Construction [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number | SecurityLoan				1
Pre-mod outstanding principal balance				$ 118
Post-mod outstanding principal balance				100
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions	$ 0	$ 0	$ 0	$ 0

Foreclosed Assets - Summary of

Foreclosed Assets - Summary of Activity in Balance of Foreclosed Assets (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2015USD ($)Assets	Jun. 30, 2014USD ($)Assets
Schedule Of Foreclosed Assets Activity [Line Items]
Beginning balance, net	$ 4,894	$ 6,262
Additions/transfers from loans and covered	2,160	4,578
Dispositions/sales	(1,420)	(5,015)
Valuation adjustments	(241)	(40)
Ending balance, net	5,393	5,785
Ending valuation allowance	$ (438)	$ (87)
Ending number of foreclosed assets | Assets	33	25
Proceeds from sale of foreclosed assets	$ 1,033	$ 6,483
Gain on sale of foreclosed assets	426	1,468
Noncovered [Member]
Schedule Of Foreclosed Assets Activity [Line Items]
Beginning balance, net	4,449	5,588
Additions/transfers from loans and covered	2,605	4,578
Dispositions/sales	(1,420)	(4,873)
Valuation adjustments	(241)	(29)
Ending balance, net	5,393	5,264
Ending valuation allowance	$ (438)	$ (76)
Ending number of foreclosed assets | Assets	33	23
Proceeds from sale of foreclosed assets	$ 1,033	$ 6,315
Gain on sale of foreclosed assets	426	1,442
Covered [Member]
Schedule Of Foreclosed Assets Activity [Line Items]
Beginning balance, net	445	674
Additions/transfers from loans and covered	(445)
Dispositions/sales		(142)
Valuation adjustments		(11)
Ending balance, net	0	521
Ending valuation allowance	0	$ (11)
Ending number of foreclosed assets | Assets		2
Proceeds from sale of foreclosed assets	0	$ 168
Gain on sale of foreclosed assets	$ 0	$ 26

Foreclosed Assets - Additional

Foreclosed Assets - Additional Information (Detail)	3 Months Ended	6 Months Ended
	Jun. 30, 2015USD ($)Assets	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Schedule Of Foreclosed Assets Activity [Line Items]
Foreclosed assets	$ 5,393,000	$ 5,393,000	$ 5,785,000	$ 4,894,000	$ 6,262,000
Proceeds from sale of foreclosed assets		1,033,000	$ 6,483,000
Residential Real Estate Properties [Member]
Schedule Of Foreclosed Assets Activity [Line Items]
Foreclosed assets	2,059,000	$ 2,059,000
Covered foreclosed assets transferred to noncovered foreclosed assets	$ 445,000
Foreclosed asset expired	2015-05
Foreclosed assets sold | Assets	1
Proceeds from sale of foreclosed assets	$ 813,000
Deferred gain on foreclosed asset sale	$ 397,000

Premises and Equipment - Summar

Premises and Equipment - Summary of Premises and Equipment (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Property, Plant and Equipment, Net, by Type [Abstract]
Land & land improvements	$ 8,883	$ 8,933
Buildings	39,090	39,638
Furniture and equipment	28,620	28,446
Premises and equipment, gross	76,593	77,017
Less: Accumulated depreciation	(34,559)	(33,570)
Premises and equipment less depreciation, gross	42,034	43,447
Construction in progress	22	46
Total premises and equipment	$ 42,056	$ 43,493

Premises and Equipment - Additi

Premises and Equipment - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Property, Plant and Equipment [Abstract]
Depreciation expense for premises and equipment	$ 1,377,000	$ 984,000	$ 2,645,000	$ 2,165,000

Cash Value of Life Insurance -

Cash Value of Life Insurance - Summary of Activity in Balance of Cash Value of Life Insurance (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)PoliciesEmployeesCompany	Jun. 30, 2014USD ($)PoliciesEmployeesCompany
Increase (Decrease) in Insurance Liabilities [Abstract]
Beginning balance			$ 92,337	$ 52,309
Increase in cash value of life insurance	$ 675	$ 400	1,350	797
Ending balance	$ 93,687	$ 53,106	93,687	53,106
End of period death benefit			$ 165,728	$ 94,999
Number of policies owned | Policies			189	133
Insurance companies used | Company			14	6
Current and former employees and directors covered | Employees			60	36

Cash Value of Life Insurance 91

Cash Value of Life Insurance - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2015PoliciesCompany	Jun. 30, 2014Company
Insurance [Abstract]
Number of life insurance policies owned by the Company	189
Insurance companies used | Company	14	6
Policies covering current and former employees and directors	60

Goodwill and Other Intangible92

Goodwill and Other Intangible Assets - Summary of Goodwill Intangible (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2015USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Ending Balance	$ 63,462
Goodwill, Additions	0
Goodwill, Reductions	0
Goodwill, Beginning Balance	$ 63,462

Goodwill and Other Intangible93

Goodwill and Other Intangible Assets - Summary of Core Deposit Intangibles (Detail) - Core deposit intangibles [Member] $ in Thousands	6 Months Ended
	Jun. 30, 2015USD ($)
Finite-Lived Intangible Assets [Line Items]
Core deposit intangibles, Beginning balance	$ 8,074
Core deposit intangibles, Reductions/Amortization	(1,601)
Core deposit intangibles, Additions	6,473
Core deposit intangibles, Ending balance	12,946
Accumulated amortization, Beginning balance	(1,601)
Accumulated amortization, Reductions/Amortization	(578)
Accumulated amortization, Additions	0
Accumulated amortization, Ending balance	(1,023)
Core deposit intangibles, net, Beginning balance	6,473
Core deposit intangibles, net, Reductions/Amortization	(578)
Core deposit intangibles, net, Additions	0
Core deposit intangibles, net, Ending balance	$ 7,051

Goodwill and Other Intangible94

Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)	Oct. 03, 2014	Sep. 23, 2011	May. 28, 2010
North Valley Bancorp [Member]
Finite-Lived Intangible Assets [Line Items]
Additions to core deposit intangibles	$ 6,614,000
Citizens [Member]
Finite-Lived Intangible Assets [Line Items]
Additions to core deposit intangibles		$ 898,000
Granite [Member]
Finite-Lived Intangible Assets [Line Items]
Additions to core deposit intangibles			$ 562,000

Goodwill and Other Intangible95

Goodwill and Other Intangible Assets - Estimated Core Deposit Intangible Amortization (Detail) - Core deposit intangibles [Member] $ in Thousands	Jun. 30, 2015USD ($)
Finite-Lived Intangible Assets [Line Items]
2,015	$ 1,157
2,016	1,157
2,017	1,109
2,018	1,044
2,019	948
Thereafter	$ 1,636

Mortgage Servicing Rights - Fai

Mortgage Servicing Rights - Fair Value of Mortgage Servicing Rights (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Servicing Assets at Fair Value [Line Items]
Servicing, late and ancillary fees received	$ 528	$ 421	$ 1,062	$ 841
Weighted-average prepayment speed (CPR)			9.50%	11.00%
Discount rate			10.00%	10.00%
Loans [Member]
Servicing Assets at Fair Value [Line Items]
Balance at beginning of period	832,143	672,341	$ 840,288	$ 680,197	$ 680,197
Balance at end of period	827,333	667,969	827,333	667,969	840,288
Mortgage servicing rights [Member]
Servicing Assets at Fair Value [Line Items]
Balance at beginning of period	7,057	6,107	7,378	6,165	6,165
Additions	236	153	421	276
Change in fair value	521	(351)	15	(532)
Balance at end of period	$ 7,814	$ 5,909	$ 7,814	$ 5,909	$ 7,378

Indemnification Asset_Liabili97

Indemnification Asset/Liability - Summary of Activity in Balance of Indemnification Asset (Liability) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
FDIC Indemnification Asset [Roll Forward]
Beginning balance	$ (433)	$ (220)	$ (349)	$ 206
Effect of actual covered losses and change in estimated future covered losses	(24)	(97)	(86)	(565)
Reimbursable expenses (revenue), net	(18)	14	(21)	73
Payments made (received)	9	266	(10)	249
Ending balance	(466)	(37)	(466)	(37)
Amount of indemnification asset (liability) recorded in other assets			105	(37)
Amount of indemnification liability recorded in other liabilities			(571)
Ending balance	$ (433)	$ (220)	$ (466)	$ (37)

Indemnification Asset_Liabili98

Indemnification Asset/Liability - Additional Information (Detail) - 6 months ended Jun. 30, 2015 - USD ($) $ in Thousands	Total
Fdic Agreements And Fdic Indemnification Asset [Line Items]
Present value of indemnification liability	$ 571
FDIC indemnification agreement expiry month and year	2020-05
Term of FDIC indemnification agreement	10 years
True up amount payable to FDIC, description	The agreement specifies that at the end of the agreement in May 2020, to the extent that total claimed losses plus servicing expenses, net of recoveries, claimed under the agreement over the entire ten year period of the agreement do not meet a certain threshold, the Company will be required to pay to the FDIC a “true up” amount equal to fifty percent of the difference of the threshold and actual claimed losses plus servicing expenses, net of recoveries. The Company has continually been estimating, updating and recording this “true up” amount, at its estimated present value, since the inception of the agreement in May 2010.
Percentage of true up amount payable to FDIC	50.00%
Residential real estate loans [Member]
Fdic Agreements And Fdic Indemnification Asset [Line Items]
FDIC indemnification agreement expiry month and year	2018-05
Nonresidential real estate loans [Member]
Fdic Agreements And Fdic Indemnification Asset [Line Items]
FDIC indemnification agreement expiry month and year	2010-05

Other Assets - Summary of Other

Other Assets - Summary of Other Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred tax asset, net	$ 38,901	$ 37,706
Prepaid expense	2,462	2,034
Software	1,220	1,327
Advanced compensation	743	908
Capital Trusts	1,693	1,690
Investment in low income housing tax credit funds	4,431
Miscellaneous other assets	5,347	8,070
Total other assets	$ 54,797	$ 51,735

Deposits - Summary of Balances

Deposits - Summary of Balances of Deposits (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Deposits [Abstract]
Noninterest-bearing demand	$ 1,060,650	$ 1,083,900
Interest-bearing demand	780,647	782,385
Savings	1,179,836	1,156,126
Time certificates, $250,000 and over	32,716	38,217
Other time certificates	287,833	319,795
Total deposits	$ 3,341,682	$ 3,380,423

Deposits - Additional Informati

Deposits - Additional Information (Detail) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Schedule Of Deposits [Line Items]
Overdrawn deposit balances classified as consumer loans	$ 1,263,000	$ 1,216,000
California [Member]
Schedule Of Deposits [Line Items]
Certificate of deposits, included in time certificates $100,000 and over	$ 5,000,000	$ 5,000,000

Reserve for Unfunded Commitm102

Reserve for Unfunded Commitments - Summary of Activity in Reserve for Unfunded Commitments (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Commitments and Contingencies Disclosure [Abstract]
Balance at beginning of period	$ 2,015	$ 2,230	$ 2,145	$ 2,415
Provision (benefit) for losses - unfunded commitments	110	(185)	(20)	(370)
Balance at end of period	$ 2,125	$ 2,045	$ 2,125	$ 2,045

Other Liabilities - Components

Other Liabilities - Components of Other Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Other Liabilities Disclosure [Abstract]
Deferred compensation	$ 7,259	$ 7,408
Pension liability	27,114	26,798
Joint beneficiary agreements	2,843	2,728
Low income housing tax credit fund commitments	4,015
Miscellaneous other liabilities	13,772	12,258
Total other liabilities	$ 55,003	$ 49,192

Other Borrowings - Summary of B

Other Borrowings - Summary of Balances of Other Borrowings (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Total other borrowings	$ 6,735	$ 9,276
Other collateralized borrowings, fixed rate, as of June 30, 2015 of 0.05%, payable on July 1, 2015 [Member]
Debt Instrument [Line Items]
Other collateralized borrowings, fixed rate, as of June 30, 2015 of 0.05%, payable on July 1, 2015	$ 6,735	$ 9,276

Other Borrowings - Summary o105

Other Borrowings - Summary of Balances of Other Borrowings (Parenthetical) (Detail) - Jun. 30, 2015 - Other collateralized borrowings, fixed rate, as of June 30, 2015 of 0.05%, payable on July 1, 2015 [Member]	Total
Debt Instrument [Line Items]
Other collateralized borrowings, fixed rate	0.05%
Other collateralized borrowings, maturity date	Jul. 1, 2015

Other Borrowings - Additional I

Other Borrowings - Additional Information (Detail) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Debt Disclosure [Abstract]
Security repurchase agreement	$ 0	$ 0
Other collateralized borrowings	6,735,000	$ 9,276,000
Repurchase investment securities sold and pledged as collateral under securities repurchase agreement	6,735,000
FHLB collateral line of credit, maximum borrowings capacity	1,086,339,000
FHLB collateral line of credit, outstanding balance	0
FHLB collateral line of credit, remaining borrowing capacity	1,086,339,000
Loans designated as potential collateral under collateralized line of credit with FHLB	1,582,611,000
Investment securities designated as potential collateral under collateral line of credit	101,039,000
Collateralized line of credit with San Francisco Federal Reserve Bank, maximum borrowings capacity	119,625,000
Collateralized line of credit with San Francisco Federal Reserve Bank, outstanding balance	0
Collateralized line of credit with San Francisco Federal Reserve Bank, remaining borrowing capacity	119,625,000
Investment securities designated as potential collateral under collateral line of credit with San Francisco Federal Reserve Bank	425,000
Loans designated as potential collateral under collateral line of credit with San Francisco Federal Reserve Bank	185,333,000
Unused correspondent banking lines of credit from commercial banks for federal funds	$ 15,000,000

Junior Subordinated Debt - Addi

Junior Subordinated Debt - Additional Information (Detail) - USD ($)	Oct. 03, 2014	Jun. 30, 2015	Dec. 31, 2014	Jun. 22, 2004	Jul. 31, 2003
Class of Stock [Line Items]
Common stock shares issued		22,749,523	22,714,964
Subordinated debenture, Face Value		$ 62,889,000
Subordinated debenture, recorded fair value		$ 56,369,000	$ 56,272,000
North Valley Bancorp [Member]
Class of Stock [Line Items]
Acquisition, completion date		Oct. 3, 2014
TriCo Capital Trust I [Member]
Class of Stock [Line Items]
Common stock shares issued					619
Common stock par value					$ 1,000
Issuance of common stock, aggregate value					$ 619,000
Issued Junior Subordinated Debenture to the trust					$ 20,619,000
Offering of cumulative trust preferred securities					20,000
Cumulative trust preferred securities for cash in an aggregate amount					$ 20,000,000
Redeem the trust preferred securities		Oct. 7, 2033
LIBOR Rate, Description		Three-month LIBOR plus 3.05%
Preferred securities redeemable interest rate		3.05%
Company paid underwriting fees, per trust preferred security		$ 7.50
Company paid underwriting fees aggregate		$ 150,000
Net proceeds were used to finance the opening of new branches, services and technology		19,850,000
Subordinated debenture, Face Value		20,619,000
Subordinated debenture, recorded fair value		$ 20,619,000
TriCo Capital Trust II [Member]
Class of Stock [Line Items]
Common stock shares issued				619
Common stock par value				$ 1,000
Issuance of common stock, aggregate value				$ 619,000
Issued Junior Subordinated Debenture to the trust				$ 20,619,000
Offering of cumulative trust preferred securities				20,000
Cumulative trust preferred securities for cash in an aggregate amount				$ 20,000,000
Redeem the trust preferred securities		Jul. 23, 2034
LIBOR Rate, Description		Three-month LIBOR plus 2.55%
Preferred securities redeemable interest rate		2.55%
Company paid underwriting fees, per trust preferred security		$ 2.50
Company paid underwriting fees aggregate		$ 50,000
Net proceeds were used to finance the opening of new branches, services and technology		19,950,000
Subordinated debenture, Face Value		20,619,000
Subordinated debenture, recorded fair value		20,619,000
North Valley Trust II [Member]
Class of Stock [Line Items]
Subordinated debenture, Face Value	$ 6,186,000	6,186,000
Acquisition of common stock interests	186,000
Subordinated debenture, recorded fair value	5,006,000	5,035,000
North Valley Trust III [Member]
Class of Stock [Line Items]
Subordinated debenture, Face Value	5,155,000	5,155,000
Acquisition of common stock interests	155,000
Subordinated debenture, recorded fair value	3,918,000	3,946,000
North Valley Trust IV [Member]
Class of Stock [Line Items]
Subordinated debenture, Face Value	10,310,000	10,310,000
Acquisition of common stock interests	310,000
Subordinated debenture, recorded fair value	$ 6,063,000	$ 6,150,000

Junior Subordinated Debt - Summ

Junior Subordinated Debt - Summary of Terms and Recorded Balance of Subordinated Debenture (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	Oct. 03, 2014
Subordinated Borrowing [Line Items]
Subordinated debenture, Face Value	$ 62,889,000
Subordinated debenture, Recorded Book Value	$ 56,369,000	$ 56,272,000
TriCo Capital Trust I [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Maturity Date	Oct. 7, 2033
Subordinated debenture, Face Value	$ 20,619,000
Subordinated debenture, Coupon Rate	3.05%
Subordinated debenture, Current Coupon Rate	3.33%
Subordinated debenture, Recorded Book Value	$ 20,619,000
TriCo Capital Trust II [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Maturity Date	Jul. 23, 2034
Subordinated debenture, Face Value	$ 20,619,000
Subordinated debenture, Coupon Rate	2.55%
Subordinated debenture, Current Coupon Rate	2.83%
Subordinated debenture, Recorded Book Value	$ 20,619,000
North Valley Trust II [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Maturity Date	Apr. 24, 2033
Subordinated debenture, Face Value	$ 6,186,000		$ 6,186,000
Subordinated debenture, Current Coupon Rate	3.53%
Subordinated debenture, Recorded Book Value	$ 5,035,000		5,006,000
North Valley Trust III [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Maturity Date	Apr. 24, 2034
Subordinated debenture, Face Value	$ 5,155,000		5,155,000
Subordinated debenture, Current Coupon Rate	3.08%
Subordinated debenture, Recorded Book Value	$ 3,946,000		3,918,000
North Valley Trust IV [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Maturity Date	Mar. 15, 2036
Subordinated debenture, Face Value	$ 10,310,000		10,310,000
Subordinated debenture, Current Coupon Rate	1.60%
Subordinated debenture, Recorded Book Value	$ 6,150,000		$ 6,063,000
LIBOR PLUS [Member] | TriCo Capital Trust I [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Coupon Rate	3.05%
LIBOR PLUS [Member] | TriCo Capital Trust II [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Coupon Rate	2.55%
LIBOR PLUS [Member] | North Valley Trust II [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Coupon Rate	3.25%
LIBOR PLUS [Member] | North Valley Trust III [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Coupon Rate	2.80%
LIBOR PLUS [Member] | North Valley Trust IV [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Coupon Rate	1.33%

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)$ / sharesshares	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)site$ / sharesshares	Jun. 30, 2014USD ($)	Dec. 31, 2014USD ($)shares	Aug. 21, 2007shares
Conversion of Stock [Line Items]
Reserves to satisfy Federal regulatory requirements	$ 66,145,000		$ 66,145,000		$ 57,616,000
Number of sites leased under non-cancelable operating leases | site			47
Rent expense under operating leases	959,000	$ 734,000	$ 1,943,000	$ 1,490,000
Rent expense offset by rent income	$ 48,000	$ 54,000	$ 104,000	$ 109,000
Commitment expiration date			One year or less or other termination clauses and may require payment of a fee.
Letters of credit, issue period			One year or less
Overdraft privilege receivable criteria			All holders of such accounts who bring their accounts to a positive balance at least once every thirty days receive the overdraft privilege.
Class B common stock of Visa Inc. | shares	22,749,523		22,749,523		22,714,964	15,814,662
Conversion ratio	1.648265		1.648265
Maximum [Member]
Conversion of Stock [Line Items]
Settlement expenses			$ 375,000
Common Class B [Member]
Conversion of Stock [Line Items]
Class B common stock of Visa Inc. | shares	13,396		13,396
Common Class A [Member]
Conversion of Stock [Line Items]
The value of the Class A shares | $ / shares	$ 67.15		$ 67.15
Value of unredeemed Class A equivalent shares	$ 1,483,000		$ 1,483,000

Commitments and Contingencie110

Commitments and Contingencies - Future Minimum Commitments under Non-Cancelable Operating Leases with Initial or Remaining Terms of One Year or More (Detail) $ in Thousands	Dec. 31, 2014USD ($)
Leases [Abstract]
2,015	$ 3,419
2,016	2,510
2,017	1,856
2,018	1,323
2,019	859
Thereafter	1,180
Future minimum lease payments	$ 11,147

Commitments and Contingencie111

Commitments and Contingencies - Summary of Bank's Commitments and Contingent Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit
Real estate construction loans [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	$ 38,295	$ 49,774
RE Mortgage [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	38,778	36,139
Standby letters of credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	11,487	17,531
Commercial [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	185,842	177,557
Other Consumer [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	393,218	392,705
Deposit account overdraft privilege [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	$ 97,875	$ 101,060

Shareholders' Equity - Addition

Shareholders' Equity - Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Aug. 21, 2007
Class of Stock [Line Items]
Repurchase of common stock						500,000
Stock repurchase plan percentage of common stock						3.20%
Common stock, shares outstanding	22,749,523			22,714,964		15,814,662
Repurchased shares outstanding			166,600
Maximum [Member]
Class of Stock [Line Items]
Dividend payable by bank				$ 52,798,000
Common Stock [Member]
Class of Stock [Line Items]
Common stock, shares outstanding	22,749,523	16,133,414		22,714,964	16,076,662
Company's common stock in lieu of cash to exercise options to purchase shares	29,441	103,268
Market value of common stock	$ 699,000	$ 2,551,000
Tri Counties Bank [Member]
Class of Stock [Line Items]
Cash dividends received	$ 5,713,000	$ 4,100,000

Stock Options and Other Equi113

Stock Options and Other Equity-Based Incentive Instruments - Additional Information (Detail) - USD ($)	Aug. 11, 2018	Aug. 11, 2017	Aug. 11, 2016	Aug. 11, 2015	Dec. 31, 2014	Jun. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Jun. 30, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding options under the plan					1,102,850	1,038,850		1,102,850
Options currently not exercisable yet expected to vest						283,000
Weighted-average remaining contractual term						2 years 1 month 6 days
Pre-tax compensation costs expected to recognize						$ 1,380,000
Restricted Stock Units (RSUs) [Member] | Service Condition Vesting RSUs [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of units outstanding expected to vest					30,920	59,088		30,920
Weighted-average remaining contractual term						2 years 8 months 12 days
Pre-tax compensation costs						$ 1,017,000
Number of units granted					13,749	30,348	0
RSUs vesting grant date						Aug. 11, 2014
Number of units released						0
Restricted Stock Units (RSUs) [Member] | Service Condition Vesting RSUs [Member] | Forecast [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Percentage of vesting schedule	25.00%	25.00%	25.00%	25.00%
Restricted Stock Units (RSUs) [Member] | Market Plus Service Condition Vesting RSUs [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of units outstanding expected to vest					15,366	33,714		15,366
Weighted-average remaining contractual term						2 years 9 months 18 days
Pre-tax compensation costs						$ 595,000
Number of units granted						18,348		0
Number of units released						0
Minimum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Maximum aggregate number of shares of TriCo's common stock issued						650,000
Minimum [Member] | Restricted Stock Units (RSUs) [Member] | Market Plus Service Condition Vesting RSUs [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of units released						0
Maximum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Maximum aggregate number of shares of TriCo's common stock issued									1,650,000
Maximum [Member] | Restricted Stock Units (RSUs) [Member] | Market Plus Service Condition Vesting RSUs [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of units released						50,571
2009 Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of shares to be reduced pursuant to stock option for computation of available number of shares for issuance						1
Number of shares to be reduced pursuant to restricted stock award for computation of available number of shares for issuance						2
Outstanding options under the plan						694,000
Options available for grant under the plan						729,397
2009 Plan [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of units outstanding expected to vest						92,802
2001 Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding options under the plan						344,850
Options available for grant under the plan						0
Share based compensation grant expiry period						10 years

Stock Options and Other Equi114

Stock Options and Other Equity-Based Incentive Instruments - Stock Option Activity (Detail) - 6 months ended Jun. 30, 2015 - $ / shares	Total
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, Number of Shares, beginning balance	1,102,850
Options granted, Number of Shares	0
Options exercised, Number of Shares	(64,000)
Options forfeited, Number of Shares	0
Options outstanding, Number of Shares, ending balance	1,038,850
Options outstanding, Weighted Average Exercise Price, beginning balance	$ 18.25
Options granted, Weighted Average Exercise Price	0
Options exercised, Weighted Average Exercise Price	19.32
Options forfeited, Weighted Average Exercise Price	0
Options outstanding, Weighted Average Exercise Price, ending balance	18.19
Options granted, Weighted Average Fair Value on Date of Grant	0
Minimum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, Option Price per Share, beginning balance	12.63
Options granted, Option Price per Share	0
Options exercised, Option Price per Share	15.34
Options forfeited, Option Price per Share	0
Options outstanding, Option Price per Share, ending balance	12.63
Maximum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, Option Price per Share, beginning balance	25.91
Options granted, Option Price per Share	0
Options exercised, Option Price per Share	20.58
Options forfeited, Option Price per Share	0
Options outstanding, Option Price per Share, ending balance	$ 25.91

Stock Options and Other Equi115

Stock Options and Other Equity-Based Incentive Instruments - Summary of Options Outstanding (Detail) - Jun. 30, 2015 - USD ($) $ / shares in Units, $ in Thousands	Total
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options	1,038,850
Weighted average exercise price	$ 18.19
Intrinsic value (in thousands)	$ 6,158
Weighted average remaining contractual term (yrs.)	5 years
Currently Exercisable [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options	755,850
Weighted average exercise price	$ 18.56
Intrinsic value (in thousands)	$ 4,219
Weighted average remaining contractual term (yrs.)	4 years 3 months 18 days
Currently Not Exercisable [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options	283,000
Weighted average exercise price	$ 17.20
Intrinsic value (in thousands)	$ 1,939
Weighted average remaining contractual term (yrs.)	7 years 1 month 6 days

Stock Options and Other Equi116

Stock Options and Other Equity-Based Incentive Instruments - Restricted Stock Unit (RSU) Activity (Detail) - $ / shares	3 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2014	Jun. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs granted, Weighted Average Fair Value on Date of Grant		$ 0
Restricted Stock Units (RSUs) [Member] | Market Plus Service Condition Vesting RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs outstanding, Number of RSUs, beginning balance		15,366
RSUs granted, Number of RSUs		18,348		0
RSUs released, Number of RSUs		0
RSUs outstanding, Number of RSUs, ending balance	15,366	33,714		15,366
RSUs granted, Weighted Average Fair Value on Date of Grant		$ 21.01
Restricted Stock Units (RSUs) [Member] | Service Condition Vesting RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs outstanding, Number of RSUs, beginning balance		30,920
RSUs granted, Number of RSUs	13,749	30,348	0
RSUs added through dividend credits, Number of RSUs		459
RSUs released, Number of RSUs		0
RSUs forfeited/expired, Number of RSUs		(2,639)
RSUs outstanding, Number of RSUs, ending balance	30,920	59,088		30,920
RSUs granted, Weighted Average Fair Value on Date of Grant		$ 23.45

Noninterest Income and Expen117

Noninterest Income and Expense - Components of Other Noninterest Income (Detail) - USD ($) $ in Thousands	3 Months Ended						6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Service charges on deposit accounts	$ 3,637				$ 2,724		$ 7,237	$ 5,414
ATM and interchange fees	3,383				2,192		6,385	4,205
Other service fees	779				533		1,493	1,053
Mortgage banking service fees	528				421		1,062	841
Change in value of mortgage servicing rights	521				(351)		15	(532)
Total service charges and fees	8,848				5,519		16,192	10,981
Gain on sale of loans	837				514		1,459	978
Commissions on sale of non-deposit investment products	784				843		1,749	1,614
Increase in cash value of life insurance	675				400		1,350	797
Change in indemnification asset	(57)				(93)		(122)	(505)
Gain (loss) on sale of foreclosed assets	115				241		426	1,468
Sale of customer checks	121				98		249	199
Lease brokerage income	245				111		382	218
Gain (loss) on disposal of fixed assets	1				71		(83)	70
Other	511				173		658	352
Total other noninterest income	3,232				2,358		6,068	5,191
Total noninterest income	12,080	$ 10,180	$ 9,755	$ 8,589	7,877	$ 8,295	22,260	16,172
Mortgage loan servicing fees, net of change in fair value of mortgage loan servicing rights	$ 1,049				$ 70		$ 1,077	$ 309

Noninterest Income and Expen118

Noninterest Income and Expense - Components of Noninterest Expense (Detail) - USD ($) $ in Thousands	3 Months Ended						6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014
Schedule Of Other Noninterest Income And Expense [Line Items]
Base salaries, net of deferred loan origination costs	$ 11,502				$ 9,008		$ 23,246	$ 17,874
Incentive compensation	1,390				1,205		2,986	2,328
Benefits and other compensation costs	4,350				3,104		9,110	6,418
Total salaries and benefits expense	17,242				13,317		35,342	26,620
Occupancy	2,541				1,802		4,958	3,764
Equipment	1,527				1,060		2,941	2,096
Data processing and software	1,834				1,350		3,786	2,528
ATM network charges	985				710		1,755	1,353
Telecommunications	785				713		1,671	1,293
Postage	330				221		642	448
Courier service	253				224		501	458
Advertising	1,002				341		1,810	683
Assessments	694				481		1,345	1,002
Operational losses	149				150		273	327
Professional fees	1,035				1,275		2,154	1,889
Foreclosed assets expense	102				151		200	309
Provision for foreclosed asset losses	174				4		241	40
Reserve for unfunded commitments	110				(185)		(20)	(370)
Intangible amortization	289				52		578	104
Merger expense					418		586	643
Other	3,384				3,032		5,955	5,246
Total other noninterest expense	15,194				11,799		29,376	21,813
Total noninterest expense	$ 32,436	$ 32,282	$ 36,566	$ 25,380	25,116	$ 23,317	64,718	48,433
Merger expense:
Merger expense					418		586	643
Merger expense					418		586	643
North Valley Bancorp [Member] | Data processing and software [Member]
Schedule Of Other Noninterest Income And Expense [Line Items]
Merger expense							108
Merger expense:
Merger expense							108
Merger expense							108
North Valley Bancorp [Member] | Professional fees [Member]
Schedule Of Other Noninterest Income And Expense [Line Items]
Merger expense					243		120	468
Merger expense:
Merger expense					243		120	468
Merger expense					243		120	468
North Valley Bancorp [Member] | Other [Member]
Schedule Of Other Noninterest Income And Expense [Line Items]
Merger expense					175		358	175
Merger expense:
Merger expense					175		358	175
Merger expense					$ 175		$ 358	$ 175

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Effective Tax Rate and Statutory Federal Income Tax Rate (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Tax Disclosure [Abstract]
Federal statutory income tax rate	35.00%	35.00%	35.00%	35.00%
State income taxes, net of federal tax benefit	6.70%	7.10%	6.80%	7.00%
Tax-exempt interest on municipal obligations	(0.60%)	(0.50%)	(0.50%)	(0.40%)
Increase in cash value of insurance policies	(1.30%)	(1.70%)	(1.40%)	(1.30%)
Nondeductible merger expenses		1.20%		0.60%
Other	(0.30%)	1.00%	0.10%	0.30%
Effective Tax Rate	39.50%	42.10%	40.00%	41.20%

Earnings Per Share - Computatio

Earnings Per Share - Computation of Earnings Per Share (Detail) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended						6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share [Abstract]
Net income	$ 11,366	$ 8,336	$ 5,650	$ 8,234	$ 4,859	$ 7,365	$ 19,702	$ 12,224
Average number of common shares outstanding	22,745				16,129		22,736	16,113
Effect of dilutive stock options	235				181		229	203
Average number of common shares outstanding used to calculate diluted earnings per share	22,980				16,310		22,965	16,316
Options excluded from diluted earnings per share because the effect of these options was antidilutive	23				101		23	101

Comprehensive Income - Componen

Comprehensive Income - Components of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Equity [Abstract]
Net unrealized (losses) gains on available for sale securities	$ (697)	$ 4,040
Tax effect	293	(1,699)
Unrealized holding gains on available for sale securities, net of tax	(404)	2,341
Unfunded status of the supplemental retirement plans	(7,501)	(7,885)
Tax effect	3,153	3,315
Unfunded status of the supplemental retirement plans, net of tax	(4,348)	(4,570)
Joint beneficiary agreement liability	26	26
Tax effect	0	0
Joint beneficiary agreement liability, net of tax	26	26
Accumulated other comprehensive loss	$ (4,726)	$ (2,203)

Comprehensive Income - Compo122

Comprehensive Income - Components of Other Comprehensive Income and Related Tax Effects (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Equity [Abstract]
Unrealized holding (losses) gains on available for sale securities before reclassifications	$ (4,752)	$ 658	$ (4,737)	$ 553
Amounts reclassified out of accumulated other comprehensive income	0	0	0	0
Unrealized holding (losses) gains on available for sale securities after reclassifications	(4,752)	658	(4,737)	553
Tax effect	1,998	(277)	1,992	(232)
Unrealized holding (losses) gains on available for sale securities, net of tax	(2,754)	381	(2,745)	321
Change in unfunded status of the supplemental retirement plans before reclassifications	0	0	0	0
Amounts reclassified out of accumulated other comprehensive income:
Amortization of prior service cost	(14)	5	(28)	10
Amortization of actuarial losses	206	4	412	8
Total amounts reclassified out of accumulated other comprehensive income	192	9	384	18
Change in unfunded status of the supplemental retirement plans after reclassifications	192	9	384	18
Tax effect	(81)	(4)	(162)	(8)
Change in unfunded status of the supplemental retirement plans, net of tax	111	5	222	10
Change in joint beneficiary agreement liability before reclassifications	0	0	0	0
Amounts reclassified out of accumulated other comprehensive income	0	0	0	0
Change in joint beneficiary agreement liability after reclassifications	0	0	0	0
Tax effect	0	0	0	0
Change in joint beneficiary agreement liability, net of tax	0	0	0	0
Total other comprehensive income (loss)	$ (2,643)	$ 386	$ (2,523)	$ 331

Retirement Plans - Additional I

Retirement Plans - Additional Information (Detail) - USD ($)	Jul. 01, 2015	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Employee service period under ESOP				1 year
Contribution and paid out as benefits		$ 455,000	$ 376,000	$ 661,000	$ 752,000
Deferred compensation obligations		7,259,000		7,259,000		$ 7,408,000
Earnings credits on deferred balances included in noninterest expense		137,000	138,000	$ 286,000	290,000
401(k) Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Minimum age for employees				21 years
Minimum period for employees to participate				90 days
401(k) Plan [Member] | Subsequent Event [Member]
Defined Benefit Plan Disclosure [Line Items]
Discretionary matching contribution equal to percentage of participant's contribution	50.00%
Discretionary matching contribution maximum percentage of eligible compensation	4.00%
Employee Stock Ownership Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Contribution and paid out as benefits		$ 1,138,000	$ 366,000	$ 1,506,000	$ 561,000
Supplemental Retirement Plans [Member] | December 31, 2015 [Member]
Defined Benefit Plan Disclosure [Line Items]
Contribution and paid out as benefits				$ 1,214,000

Retirement Plans - Net Periodic

Retirement Plans - Net Periodic Benefit Cost Recognized for Supplemental Retirement Plans (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net pension cost included the following components:
Service cost-benefits earned during the period	$ 256	$ 163	$ 512	$ 326
Interest cost on projected benefit obligation	239	174	478	348
Amortization of net obligation at transition		1		1
Amortization of prior service cost	(14)	34	(28)	69
Recognized net actuarial loss	206	4	412	8
Net periodic pension cost	687	376	1,374	752
Company contributions to pension plans	455	376	661	752
Pension plan payouts to participants	$ 455	$ 376	$ 661	$ 752

Related Party Transactions - Su

Related Party Transactions - Summary of Loan Activity (Detail) - Directors and Officers [Member] - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Related Party Transaction [Line Items]
Beginning balance	$ 3,132	$ 2,636
Advances/new loans	745	2,106
Removed/payments	(582)	(1,610)
Ending balance	$ 3,295	$ 3,132

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Modern Building Inc. [Member]
Related Party Transaction [Line Items]
Aggregate payments for construction services	$ 216,000	$ 1,181,000

Fair Value Measurement - Record

Fair Value Measurement - Recorded Amount of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 6,567	$ 5,091	$ 4,408
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	6,567	5,091	$ 4,408
Fair value measurements on recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	292,244	90,583
Fair value measurements on recurring basis [Member] | Obligations of U.S. government corporations and agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	240,552	75,120
Fair value measurements on recurring basis [Member] | Obligations of states and political subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	38,987	3,175
Fair value measurements on recurring basis [Member] | Corporate debt securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	1,900	1,908
Fair value measurements on recurring basis [Member] | Marketable equity securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,991	3,002
Fair value measurements on recurring basis [Member] | Mortgage servicing rights [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	7,814	7,378
Fair value measurements on recurring basis [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,991	3,002
Fair value measurements on recurring basis [Member] | Level 1 [Member] | Marketable equity securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,991	3,002
Fair value measurements on recurring basis [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	281,439	80,203
Fair value measurements on recurring basis [Member] | Level 2 [Member] | Obligations of U.S. government corporations and agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	240,552	75,120
Fair value measurements on recurring basis [Member] | Level 2 [Member] | Obligations of states and political subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	38,987	3,175
Fair value measurements on recurring basis [Member] | Level 2 [Member] | Corporate debt securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	1,900	1,908
Fair value measurements on recurring basis [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	7,814	7,378
Fair value measurements on recurring basis [Member] | Level 3 [Member] | Mortgage servicing rights [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 7,814	$ 7,378

Fair Value Measurement - Additi

Fair Value Measurement - Additional Information (Detail) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Transfers between any levels	$ 0	$ 0
Carrying value of loans fully charged-off	0
Securities held to maturity	776,283,000	676,426,000
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities held to maturity	$ 0	$ 0

Fair Value Measurement - Reconc

Fair Value Measurement - Reconciliation of Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Level 3) on Recurring Basis (Detail) - Mortgage servicing rights [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance at beginning of period	$ 7,057	$ 6,107	$ 7,378	$ 6,165
Issuances	235	153	421	276
Change included in earnings	522	(351)	15	(532)
Balance at end of period	$ 7,814	$ 5,909	$ 7,814	$ 5,909

Fair Value Measurement - Quanti

Fair Value Measurement - Quantitative Information about Recurring Level 3 Fair Value Measurements (Detail) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Constant prepayment rate	9.50%	11.00%
Discount rate	10.00%	10.00%
Mortgage servicing rights [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Mortgages Servicing Rights, Fair Value	$ 7,814		$ 7,378
Minimum [Member] | Mortgage servicing rights [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	10.00%		10.00%
Minimum [Member] | Mortgage servicing rights [Member] | Discounted Cash Flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Constant prepayment rate	6.30%		5.70%
Maximum [Member] | Mortgage servicing rights [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	12.00%		12.00%
Maximum [Member] | Mortgage servicing rights [Member] | Discounted Cash Flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Constant prepayment rate	22.70%		23.40%
Weighted Average [Member] | Mortgage servicing rights [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	10.00%		10.00%
Weighted Average [Member] | Mortgage servicing rights [Member] | Discounted Cash Flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Constant prepayment rate	9.50%		12.00%

Fair Value Measurement - Assets

Fair Value Measurement - Assets Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 6,567	$ 4,408	$ 5,091
Total Gains/(Losses)	(88)	(525)	(773)
Impaired Originated & PNCI loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	3,377	3,842	2,480
Total Gains/(Losses)	151	(509)	(636)
Foreclosed assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	3,190	566	2,611
Total Gains/(Losses)	(239)	(16)	(137)
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	6,567	4,408	5,091
Level 3 [Member] | Impaired Originated & PNCI loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	3,377	3,842	2,480
Level 3 [Member] | Foreclosed assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 3,190	$ 566	$ 2,611

Fair Value Measurement - Schedu

Fair Value Measurement - Schedule of Gains and Losses from Nonrecurring Fair Value Adjustments (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Fair Value Disclosures [Abstract]
Impaired Originated & PNCI loans	$ (22)	$ 298
Foreclosed assets	206	4
Total losses from nonrecurring fair value adjustments	$ 184	$ 302

Fair Value Measurement - Qua133

Fair Value Measurement - Quantitative Information about Level 3 Fair Value Measurements for Financial Instruments Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 6,567	$ 5,091	$ 4,408
Impaired Originated & PNCI loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	3,377	2,480	3,842
Foreclosed assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	3,190	2,611	566
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	6,567	5,091	4,408
Level 3 [Member] | Impaired Originated & PNCI loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	3,377	2,480	3,842
Level 3 [Member] | Foreclosed assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 3,190	$ 2,611	$ 566
Level 3 [Member] | Sales comparison approach [Member] | Minimum [Member] | Impaired Originated & PNCI loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Adjustment for differences between comparable sales	(5.00%)	(5.00%)
Level 3 [Member] | Sales comparison approach [Member] | Minimum [Member] | Foreclosed assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Adjustment for differences between comparable sales	0.00%	(5.00%)
Level 3 [Member] | Sales comparison approach [Member] | Maximum [Member] | Impaired Originated & PNCI loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Adjustment for differences between comparable sales	(42.00%)	(42.50%)
Level 3 [Member] | Sales comparison approach [Member] | Maximum [Member] | Foreclosed assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Adjustment for differences between comparable sales	(30.10%)	(29.40%)
Level 3 [Member] | Sales comparison approach [Member] | Weighted Average [Member] | Impaired Originated & PNCI loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Adjustment for differences between comparable sales	(9.00%)	(10.10%)
Level 3 [Member] | Sales comparison approach [Member] | Weighted Average [Member] | Foreclosed assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Adjustment for differences between comparable sales	(3.70%)	(8.20%)
Level 3 [Member] | Income approach [Member] | Minimum [Member] | Impaired Originated & PNCI loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Capitalization rate	8.00%	9.09%
Level 3 [Member] | Income approach [Member] | Maximum [Member] | Impaired Originated & PNCI loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Capitalization rate	9.10%	9.09%
Level 3 [Member] | Income approach [Member] | Weighted Average [Member] | Impaired Originated & PNCI loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Capitalization rate	8.10%	9.09%

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 ($)	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013
Financial assets:
Cash and due from banks	$ 92,234,000		$ 93,150,000
Cash at Federal Reserve and other banks	77,269,000		517,578,000
Securities held to maturity	776,283,000		676,426,000
Indemnification (liability) asset	(466,000)	$ (433,000)	(349,000)	$ (37,000)	$ (220,000)	$ 206,000
Financial liabilities:
Other borrowings	6,735,000		9,276,000
Junior subordinated debt	56,369,000		56,272,000
Level 3 [Member]
Financial assets:
Securities held to maturity	0		0
Contract Amount [Member] | Level 3 [Member]
Off-balance sheet:
Commitments	656,133,000		656,175,000
Standby letters of credit	11,487,000		17,531,000
Overdraft privilege commitments	97,875,000		101,060,000
Fair Value [Member] | Level 3 [Member]
Financial assets:
Loans, net	2,439,466,000		2,342,570,000
Indemnification (liability) asset	(466,000)		(349,000)
Off-balance sheet:
Commitments	6,561,000		6,562,000
Standby letters of credit	115,000		175,000
Overdraft privilege commitments	979,000		1,011,000
Fair Value [Member] | Level 1 [Member]
Financial assets:
Cash and due from banks	92,234,000		93,150,000
Cash at Federal Reserve and other banks	77,269,000		517,578,000
Fair Value [Member] | Level 2 [Member]
Financial assets:
Securities held to maturity	778,697,000		688,779,000
Loans held for sale	4,630,000		3,579,000
Financial liabilities:
Deposits	3,341,380,000		3,380,486,000
Other borrowings	6,735,000		9,276,000
Junior subordinated debt	42,063,000		45,053,000
Carrying Amount [Member] | Level 3 [Member]
Financial assets:
Loans, net	2,358,308,000		2,245,938,000
Indemnification (liability) asset	(466,000)		(349,000)
Carrying Amount [Member] | Level 1 [Member]
Financial assets:
Cash and due from banks	92,234,000		93,150,000
Cash at Federal Reserve and other banks	77,269,000		517,578,000
Carrying Amount [Member] | Level 2 [Member]
Financial assets:
Securities held to maturity	776,283,000		676,426,000
Restricted equity securities	16,956,000		16,956,000
Loans held for sale	4,630,000		3,579,000
Financial liabilities:
Deposits	3,341,682,000		3,380,423,000
Other borrowings	6,735,000		9,276,000
Junior subordinated debt	$ 56,369,000		$ 56,272,000

TriCo Bancshares Condensed F135

TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Balance Sheets (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Assets
Cash and Cash equivalents	$ 169,503	$ 610,728	$ 344,383	$ 598,368
Other assets	54,797	51,735
Total assets	3,893,855	3,916,458
Liabilities and shareholders' equity
Other liabilities	55,003	49,192
Junior subordinated debt	56,369	56,272
Total liabilities	3,462,711	3,498,286
Shareholders' equity:
Common stock, no par value: authorized 50,000,000 shares; issued and outstanding 22,749,523 and 22,714,964 shares, respectively	245,965	244,318
Retained earnings	189,905	176,057
Accumulated other comprehensive loss, net	(4,726)	(2,203)
Total shareholders' equity	431,144	418,172	260,943	250,946
Total liabilities and shareholders' equity	3,893,855	3,916,458
Parent [Member]
Assets
Cash and Cash equivalents	2,437	2,229	$ 2,413	$ 2,520
Investment in Tri Counties Bank	483,796	470,797
Other assets	1,760	1,902
Total assets	487,993	474,928
Liabilities and shareholders' equity
Other liabilities	480	484
Junior subordinated debt	56,369	56,272
Total liabilities	56,849	56,756
Shareholders' equity:
Common stock, no par value: authorized 50,000,000 shares; issued and outstanding 22,749,523 and 22,714,964 shares, respectively	245,965	244,318
Retained earnings	189,905	176,057
Accumulated other comprehensive loss, net	(4,726)	(2,203)
Total shareholders' equity	431,144	418,172
Total liabilities and shareholders' equity	$ 487,993	$ 474,928

TriCo Bancshares Condensed F136

TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Balance Sheets (Parenthetical) (Detail) - $ / shares None in scaling factor is -9223372036854775296	Jun. 30, 2015	Dec. 31, 2014	Aug. 21, 2007
Condensed Financial Statements, Captions [Line Items]
Common stock, par value
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	22,749,523	22,714,964
Common stock, shares outstanding	22,749,523	22,714,964	15,814,662
Parent [Member]
Condensed Financial Statements, Captions [Line Items]
Common stock, par value
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	22,749,523	22,714,964
Common stock, shares outstanding	22,749,523	22,714,964

TriCo Bancshares Condensed F137

TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Statements of Income (Detail) - USD ($) $ in Thousands	3 Months Ended						6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014
Condensed Financial Statements, Captions [Line Items]
Interest expense	$ (1,346)	$ (1,382)	$ (1,437)	$ (1,082)	$ (1,075)	$ (1,087)	$ (2,728)	$ (2,162)
Income before income taxes	18,798	14,044	9,580	14,235	8,396	12,405	32,842	20,801
Equity in net income of Tri Counties Bank:
Income tax benefit	(7,432)	(5,708)	(3,930)	(6,001)	(3,537)	(5,040)	(13,140)	(8,577)
Net income	11,366	$ 8,336	$ 5,650	$ 8,234	4,859	$ 7,365	19,702	12,224
Parent [Member]
Condensed Financial Statements, Captions [Line Items]
Interest expense	(491)				(306)		(973)	(610)
Administration expense	(263)				(466)		(416)	(790)
Income before income taxes	(754)				(772)		(1,389)	(1,400)
Equity in net income of Tri Counties Bank:
Distributed	3,593				2,050		5,713	4,100
(Over) under distributed	8,210				3,400		14,794	9,079
Income tax benefit	317				181		584	445
Net income	$ 11,366				$ 4,859		$ 19,702	$ 12,224

TriCo Bancshares Condensed F138

TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Statements of Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended						6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014
Condensed Financial Statements, Captions [Line Items]
Net income	$ 11,366	$ 8,336	$ 5,650	$ 8,234	$ 4,859	$ 7,365	$ 19,702	$ 12,224
Other comprehensive income (loss), net of tax:
Unrealized holding gains (losses) on available for sale securities arising during the period	(2,754)				381		(2,745)	321
Change in minimum pension liability	111				5		222	10
Other comprehensive income (loss)	(2,643)				386		(2,523)	331
Comprehensive income	8,723				5,245		17,179	12,555
Parent [Member]
Condensed Financial Statements, Captions [Line Items]
Net income	11,366				4,859		19,702	12,224
Other comprehensive income (loss), net of tax:
Unrealized holding gains (losses) on available for sale securities arising during the period	(2,754)				381		(2,745)	321
Change in minimum pension liability	111				5		222	10
Other comprehensive income (loss)	(2,643)				386		(2,523)	331
Comprehensive income	$ 8,723				$ 5,245		$ 17,179	$ 12,555

TriCo Bancshares Condensed F139

TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Statements of Cash Flows (Detail) - USD ($) $ in Thousands	3 Months Ended						6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014
Operating activities:
Net income	$ 11,366	$ 8,336	$ 5,650	$ 8,234	$ 4,859	$ 7,365	$ 19,702	$ 12,224
Adjustments to reconcile net income to net cash provided by operating activities:
Stock option vesting expense							698	534
Stock option excess tax benefits							30	220
Net cash from operating activities							25,567	11,401
Financing activities:
Stock option excess tax benefits							30	220
Repurchase of common stock							(31)	(292)
Cash dividends paid - common							(5,473)	(3,547)
Net cash used by financing activities							(46,187)	(28,639)
Net change in cash and cash equivalents							(441,225)	(253,985)
Cash and cash equivalents and beginning of year		610,728		344,383		598,368	610,728	598,368
Cash and cash equivalents at end of period	169,503		610,728		344,383		169,503	344,383
Parent [Member]
Operating activities:
Net income	11,366				4,859		19,702	12,224
Adjustments to reconcile net income to net cash provided by operating activities:
Over (under) distributed equity in earnings of Tri Counties Bank							(14,794)	(9,079)
Stock option vesting expense							698	534
Stock option excess tax benefits							(30)	(220)
Net change in other assets and liabilities							(463)	(474)
Net cash from operating activities							5,113	2,985
Financing activities:
Issuance of common stock through option exercise							30	220
Stock option excess tax benefits							569	527
Repurchase of common stock							(31)	(292)
Cash dividends paid - common							(5,473)	(3,547)
Net cash used by financing activities							(4,905)	(3,092)
Net change in cash and cash equivalents							208	(107)
Cash and cash equivalents and beginning of year		$ 2,229		$ 2,413		$ 2,520	2,229	2,520
Cash and cash equivalents at end of period	$ 2,437		$ 2,229		$ 2,413		$ 2,437	$ 2,413

Regulatory Matters - Actual and

Regulatory Matters - Actual and Required Capital Ratios of Bank (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount		$ 279,311
Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount		167,587
Tier 1 Capital (to Average Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount		$ 185,918
Total Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio		10.00%
Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio		6.00%
Tier 1 Capital (to Average Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio		5.00%
Parent [Member]
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Actual, Amount	$ 454,345	$ 436,955
Tier 1 Capital (to Risk Weighted Assets), Actual, Amount	416,876	401,971
Tier 1 Capital (to Average Assets), Actual, Amount	$ 416,876	$ 401,971
Total Capital (to Risk Weighted Assets), Actual, Ratio	15.16%	15.63%
Tier 1 Capital (to Risk Weighted Assets), Actual, Ratio	13.91%	14.38%
Tier 1 Capital (to Average Assets), Actual, Ratio	10.91%	10.80%
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount		$ 223,603
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount		111,801
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Amount		$ 148,819
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio		8.00%
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio		4.00%
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Ratio		4.00%
Total Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 299,742
Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	239,794
Tier 1 Capital (to Average Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 190,026
Total Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	10.00%
Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	8.00%
Tier 1 Capital (to Average Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5.00%
Parent [Member] | Basel III Phase-in Schedule [Member]
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	$ 239,794
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	179,845
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Amount	$ 152,821
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	8.00%
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	6.00%
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Ratio	4.00%
Parent [Member] | Basel III Fully Phased In [Member]
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	$ 314,729
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	254,781
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Amount	$ 152,821
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	10.50%
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	8.50%
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Ratio	4.00%
Parent [Member] | Common Stock [Member]
Schedule of Capitalization [Line Items]
Tier 1 Capital (to Risk Weighted Assets), Actual, Amount	$ 362,200
Tier 1 Capital (to Risk Weighted Assets), Actual, Ratio	12.08%
Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 194,832
Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.50%
Parent [Member] | Common Stock [Member] | Basel III Phase-in Schedule [Member]
Schedule of Capitalization [Line Items]
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	$ 134,884
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	4.50%
Parent [Member] | Common Stock [Member] | Basel III Fully Phased In [Member]
Schedule of Capitalization [Line Items]
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	$ 209,820
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	7.00%
Tri Countries Bank [Member]
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Actual, Amount	$ 452,301	$ 433,286
Tier 1 Capital (to Risk Weighted Assets), Actual, Amount	414,854	398,325
Tier 1 Capital (to Average Assets), Actual, Amount	$ 414,854	$ 398,325
Total Capital (to Risk Weighted Assets), Actual, Ratio	15.10%	15.51%
Tier 1 Capital (to Risk Weighted Assets), Actual, Ratio	13.85%	14.26%
Tier 1 Capital (to Average Assets), Actual, Ratio	10.86%	10.71%
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount		$ 223,449
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount		111,724
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Amount		$ 148,734
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio		8.00%
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio		4.00%
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Ratio		4.00%
Total Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 299,564
Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	239,651
Tier 1 Capital (to Average Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 190,934
Total Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	10.00%
Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	8.00%
Tier 1 Capital (to Average Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5.00%
Tri Countries Bank [Member] | Basel III Phase-in Schedule [Member]
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	$ 239,651
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	179,739
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Amount	$ 152,747
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	8.00%
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	6.00%
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Ratio	4.00%
Tri Countries Bank [Member] | Basel III Fully Phased In [Member]
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	$ 314,542
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	254,630
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Amount	$ 152,747
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	10.50%
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	8.50%
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Ratio	4.00%
Tri Countries Bank [Member] | Common Stock [Member]
Schedule of Capitalization [Line Items]
Tier 1 Capital (to Risk Weighted Assets), Actual, Amount	$ 414,854
Tier 1 Capital (to Risk Weighted Assets), Actual, Ratio	13.85%
Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 194,717
Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.50%
Tri Countries Bank [Member] | Common Stock [Member] | Basel III Phase-in Schedule [Member]
Schedule of Capitalization [Line Items]
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	$ 134,804
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	4.50%
Tri Countries Bank [Member] | Common Stock [Member] | Basel III Fully Phased In [Member]
Schedule of Capitalization [Line Items]
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	$ 209,695
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	7.00%

Summary of Quarterly Results141

Summary of Quarterly Results of Operations (Unaudited) - Result of Operations (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014
Loans:
Discount accretion PCI - cash basis	$ 404	$ 172	$ 107	$ 290	$ 69	$ 203
Discount accretion PCI - other	907	1,274	919	822	811	984
Discount accretion PNCI	822	1,348	796	402	624	379
All other loan interest income	29,886	28,371	28,914	23,466	22,929	22,172
Total loan interest income	32,019	31,165	30,736	24,980	24,433	23,738
Debt securities, dividends and interest bearing cash at Banks (not FTE)	7,848	6,560	5,671	4,151	3,985	3,421
Total interest and dividend income	39,867	37,725	36,407	29,131	28,418	27,159	$ 77,592	$ 55,577
Interest expense	1,346	1,382	1,437	1,082	1,075	1,087	2,728	2,162
Net interest income	38,521	36,343	34,970	28,049	27,343	26,072	74,864	53,415
(Benefit from) provision for loan losses	(633)	197	(1,421)	(2,977)	1,708	(1,355)	(436)	353
Net interest income after provision for loan losses	39,154	36,146	36,391	31,026	25,635	27,427	75,300	53,062
Noninterest income	12,080	10,180	9,755	8,589	7,877	8,295	22,260	16,172
Noninterest expense	32,436	32,282	36,566	25,380	25,116	23,317	64,718	48,433
Income before income taxes	18,798	14,044	9,580	14,235	8,396	12,405	32,842	20,801
Income tax expense	7,432	5,708	3,930	6,001	3,537	5,040	13,140	8,577
Net income	$ 11,366	$ 8,336	$ 5,650	$ 8,234	$ 4,859	$ 7,365	$ 19,702	$ 12,224
Per common share:
Net income (diluted)	$ 0.49	$ 0.36	$ 0.25	$ 0.50	$ 0.30	$ 0.45	$ 0.86	$ 0.75
Dividends	$ 0.13	$ 0.11	$ 0.11	$ 0.11	$ 0.11	$ 0.11