Business and Summary of Significant Accounting Policies (Policies)	12 Months Ended
Dec. 31, 2014
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation. The accompanying consolidated financial statements include the accounts of the Company, the Bank, and Acadia Trust. All intercompany accounts and transactions have been eliminated in consolidation. Assets held by Acadia Trust in a fiduciary capacity are not assets of the Company and, therefore, are not included in the consolidated statements of condition. The Company also owns 100% of the common stock of CCTA and UBCT. These entities are unconsolidated subsidiaries of the Company.
Reclassification and presentation	Reclassifications. Certain reclassifications have been made to prior year amounts to conform to the current year's presentation.
Use of Estimates in the Preparation of Financial Statements	Use of Estimates. The preparation of the financial statements in conformity with GAAP 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 periods. Actual results could vary from these estimates. Several estimates are particularly critical and are susceptible to significant near-term change, including the ALL, OREO, income taxes, postretirement benefits and asset impairment judgments, including OTTI of investment securities, goodwill, other intangible assets, stock-based compensation, and effectiveness of hedging derivatives.
Subsequent Events	Subsequent Events. The Company has evaluated events and transactions subsequent to December 31, 2014 for potential recognition or disclosure as required by GAAP.
Significant Concentration of Credit Risk	Significant Concentration of Credit Risk. The Bank grants loans primarily to customers in Maine. Although the Bank has a diversified loan portfolio, a large portion of the Bank's loans are secured by commercial or residential real estate located in Maine and is subject to volatility within Maine's real estate market. Furthermore, the debtors' ability to honor their contracts is highly dependent upon other economic factors throughout Maine. The Bank does not generally engage in non-recourse lending and typically will require the principals of any commercial borrower to obligate themselves personally on the loan.
Cash and Cash Equivalents	Cash and Cash Equivalents. For the purposes of reporting cash flows, cash and cash equivalents consist of cash on hand and amounts due from banks. The Bank is required by the FRB to maintain non-interest bearing cash reserves equal to a percentage of deposits. The Company maintains the reserve balances in cash on hand or at the FRB.
Securities	Securities. Investment securities are classified at the time of purchase as AFS, HTM, or trading. The classification of investment securities is constantly re-evaluated for consistency with corporate goal and objectives. Trading securities are carried at fair value on the consolidated statements of condition with subsequent changes to fair value recorded in earnings. Debt securities that management has the positive intent and ability to hold to maturity are classified as HTM and recorded at amortized cost on the consolidated statements of condition. Investment securities that are not classified as HTM or trading securities are classified as AFS and are carried at fair value on the consolidated statements of condition with subsequent changes to fair value recorded within AOCI, net of tax. Purchase premiums and discounts are recognized in interest income on the consolidated statements of income using the interest method over the period to maturity and are recorded on the trade date. Gains and losses on the sale of investment securities are recognized within non-interest income on the consolidated statements of income and are recorded on the trade date using the specific identification method. FHLB and FRB stocks are non-marketable equity securities and are reported at cost and evaluated for impairment. Management conducts a quarterly review and evaluation of its debt securities portfolio to determine if the decline in fair value of any security appears to be other-than-temporary. The factors considered by management in its review include, but are not limited to: the length of time and the extent to which the fair value has been less than cost, the financial condition and near-term prospects of the issuer, the ratings of the security, whether the decline in fair value appears to be issuer specific or, alternatively, a reflection of general market or industry conditions, and the Company’s intent and ability to hold the security for a period of time sufficient to allow for a recovery in fair value. Declines in the fair value of individual equity securities that are deemed to be other-than-temporary are reflected in non-interest income on the consolidated statements of income when identified. For individual debt securities where the Company does not intend to sell the security and it is not more-likely-than-not that the Company will be required to sell the security before recovery of its amortized cost basis, the other-than-temporary decline in the fair value of the debt security related to (i) credit loss is recognized in not-interest income on the consolidated statements of income and (ii) other factors is recognized in AOCI, net of tax. For individual debt securities where the Company intends to sell the security or more-likely-than-not will be required to sell the security before recovery of its amortized cost, OTTI is recognized in earnings equal to the entire difference between the security’s cost basis and its fair value. The Company is a member of the FHLBB. As a requirement of membership, the Company must own a minimum amount of FHLB stock based on the level of its FHLB advances. No market exists for shares of the FHLB and, therefore, they are carried at par value. FHLB stock may be redeemed at par value five years following termination of FHLB membership, subject to limitations which may be imposed by the FHLB or its regulator, the Federal Housing Finance Agency, to maintain capital adequacy of the FHLB. While the Company currently has no intentions to terminate its FHLB membership, the ability to redeem its investment in FHLB stock would be subject to the conditions imposed by the FHLB.
Loans and Allowance for Loan Losses	Loans and Allowance for Loan Losses. Loans are reported at amortized cost adjusted for any partial charge-offs and net of any deferred loan fees or costs. The ALL is established through provisions for credit losses charged to income. Losses on loans, including impaired loans, are charged to the ALL when all or a portion of a loan is deemed to be uncollectible. Recoveries of loans previously charged off are credited to the ALL when realized. In determining the appropriate level of ALL, the Company uses a methodology to systematically measure the amount of estimated loan loss exposure inherent in the loan portfolio. The methodology includes four elements: (1) identification of loss allocations for certain specific loans, (2) loss allocation factors for certain loan types based on credit risk and loss experience, (3) general loss allocations for other environmental factors, and (4) the unallocated portion of the allowance. The specific component relates to loans that have a principal balance of $250,000 or more that are classified as substandard or doubtful and are on non-accrual status. For such loans that are also classified as impaired, an allowance is established when the discounted expected future cash flows (or collateral value or observable market price) of the impaired loan is lower than the recorded investment of that loan. Loans that do not meet the above criteria are separated into risk pools by portfolio segment and risk ratings. The Company then evaluates each risk pool collectively for impairment through loss allocation factors. The Company uses a risk rating system to determine the credit quality of these loan pools and applies the related loss allocation factors. In assessing the risk rating of a particular loan, the Company considers, among other factors, the obligor’s debt capacity, financial condition, the level of the obligor’s earnings, the amount and sources of repayment, the performance with respect to loan terms, the adequacy of collateral, the level and nature of contingent liabilities, management strength, and the industry in which the obligor operates. These factors are based on an evaluation of historical information, as well as subjective assessment and interpretation of current conditions. Emphasizing one factor over another, or considering additional factors that may be relevant in determining the risk rating of a particular loan but which are not currently an explicit part of the Company's methodology, could impact the risk rating assigned to that loan. The Company at least annually reassesses and revises the loss allocation factors used in the assignment of loss exposure to appropriately reflect the analysis of loss experience. Portfolios of more homogenous populations of loans including home equity and consumer loans are analyzed as groups taking into account delinquency rates and other economic conditions which may affect the ability of borrowers to meet debt service requirements, including interest rates and energy costs. The Company also considers regulatory guidance, historical loss ranges, portfolio composition, and other changes in the portfolio. An additional allocation is determined based on a judgmental process whereby management considers qualitative and quantitative assessments of other environmental factors. An unallocated portion of the total allowance is maintained to allow for shifts in portfolio composition and to account for uncertainty in the economic environment. Since the methodology is based upon historical experience and trends, as well as management’s judgment, factors may arise that result in different estimations. Significant factors that could give rise to changes in these estimates may include, but are not limited to, changes in economic conditions in the Company’s market area, concentration of risk, declines in local property values, and regulatory guidance. Loans past due 30 days or more are considered delinquent. In general, secured loans that are delinquent for 90 consecutive days are placed on non-accrual status, and are subject to impairment and/or loss assessment in accordance with established internal policy. In general, unsecured loans that are delinquent for 90 consecutive days are charged off. In cases where a borrower experiences financial difficulties and the Company makes certain concessionary modifications to contractual terms, the loan is classified as a TDR. Modifications may include adjustments to interest rates, extensions of maturity, and other actions intended to minimize economic loss and avoid foreclosure or repossession of collateral. An allowance is established on a loan classified as a TDR if the present value of expected future cash flows (or, alternatively, the observable market price of the loan or the fair value of the collateral) is less than the recorded investment of the loan. Non-accrual loans that are restructured as TDRs remain on non-accrual status for a period of at least six months to demonstrate that the borrower can meet the restructured terms. If the restructured loan is on accrual status prior to being modified, it is reviewed to determine if the modified loan should remain on accrual status. If the borrower’s ability to meet the revised payment schedule is not reasonably assured, the loan is classified as a non-accrual loan. Loans classified as TDRs remain classified as such for the life of the loan, except in limited circumstances, when it is determined that the borrower is performing under the modified terms and the restructuring agreement specified an interest rate greater than or equal to an acceptable market rate for a comparable new loan at the time of the restructuring.
Interest and Fees on Loans	Interest and Fees on Loans. Interest on loans is accrued at the contractual rate and recorded as interest income on the consolidated statements of income based upon the principal amount outstanding. Loan origination fees received and certain direct loan origination costs are deferred and recognized in interest income as an adjustment of loan yield over the expected life of the loan using the level-yield method. A loan is classified as non-accrual generally when it becomes 90 days past due as to interest or principal payments. All previously accrued but unpaid interest on non-accrual loans is reversed from interest income in the period in which the loan is considered delinquent. Interest payments received on non-accrual loans, including impaired loans, are applied as a reduction of principal. A loan remains on non-accrual status until all principal and interest amounts contractually due are brought current and future payments are reasonably assured.
Goodwill and Core Deposit Intangible	Goodwill and Core Deposit Intangible. Goodwill represents the excess cost of an acquisition over the fair value of the net assets acquired. Goodwill is not subject to amortization but rather is evaluated at least annually for impairment, or as events and circumstances dictate, at the reporting unit level. The Company's two reporting unit levels are (i) banking and (ii) financial services. The banking reporting unit is representative of the Company's core banking business line, while the financial services reporting unit is representative of the Company's wealth management, trust and services business line. Any impairment is charged to non-interest expense on the consolidated statements of income. Goodwill is evaluated for impairment by the Company utilizing several standard valuation techniques, including discounted cash flow analyses, comparable transaction market multiples, and an estimation of the impact of business conditions and investor activities on the long-term value of the goodwill. The Company tests goodwill for impairment annually as of November 30^th utilizing the two-step process and fair value guidance outlined in GAAP. Step one compares the fair value of the reporting unit to its carrying value. If the fair value of the reporting unit is greater than its carrying value, then the reporting unit is not deemed to be impaired and no further assessment is required. However, if the fair value of the reporting unit is below its carrying value, GAAP requires that step two of the goodwill impairment test be performed. Step two involves a process similar to business combination accounting in which fair value is assigned to all assets, liabilities and other identified intangibles. The result of step two is calculating the implied fair value of goodwill for the reporting unit. If the implied fair value of goodwill for the reporting unit is greater than its carrying value, then the reporting unit’s goodwill is not impaired. However, if the reporting unit’s implied fair value of goodwill is below its carrying value, an impairment charge is recorded to mark the carrying value of goodwill to the calculated implied fair value. The Company completed its annual goodwill impairment testing as of November 30, 2014 for each reporting unit and passed step one. As such, step two of the goodwill impairment test was not performed and no goodwill impairment was recognized in 2014. Core deposit intangible represents the estimated value of acquired customer relationships and is amortized on a straight-line basis over the estimated life of those relationships (5 to 10 years from the acquisition dates). Core deposit intangibles are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. If necessary, management will test the core deposit intangibles for impairment by comparing its carrying value to the expected undiscounted cash flows of the assets. If the undiscounted cash flows of the intangible assets exceed its carrying value then the intangible assets are deemed to be fully recoverable and not impaired. However, if the undiscounted cash flows of the intangible assets are less than its carrying value then management must compare the fair value of the intangible assets to its carrying value. If the fair value of the intangible assets exceeds its carrying value then the intangible assets are not impaired. If the fair value of the intangible assets is less than its carrying value then an impairment charge is recorded to mark the carrying value of the intangible assets to fair value. For the year ended December 31, 2014, there were no events or changes in circumstances that indicated the carrying amount may not be recoverable.
Bank-Owned Life Insurance	BOLI. BOLI represents the CSV of life insurance policies on the lives of certain active and retired employees where the Company is the beneficiary. The CSV of the policies is recorded as an asset. Increases in the CSV of the policies, as well as death benefits received, net of any CSV, are recorded in non-interest income on the consolidated statements of income, and are not subject to income taxes. The Company reviews the financial strength of the insurance carriers prior to the purchase of life insurance policies and no less than annually thereafter. A life insurance policy with any individual carrier is limited to 15% of Tier I capital (as defined for regulatory purposes) and the total CSV of life insurance policies is limited to 25% of Tier I capital.
Premises and Equipment	Premises and Equipment. Premises and equipment are stated at cost less accumulated depreciation and amortization. Depreciation and amortization are computed on the straight-line method over the estimated useful lives of the related assets. Leasehold improvements are amortized over the lesser of the term of the respective lease or the estimated life of the improvement. Land is carried at cost.
OREO	OREO. OREO properties acquired through foreclosure or deed-in-lieu of foreclosure are recorded initially at estimated fair value less estimated costs to sell. Any write-down of the recorded investment in the related loan is charged to the ALL upon transfer to OREO. Upon acquisition of a property, an appraisal or a broker’s opinion is used to substantiate fair value of the property. Any subsequent declines in the fair value of a property are recorded as a valuation allowance on the asset. Any subsequent increases in the fair value of a property are recorded as reductions of the valuation allowance, but not below zero. Upon a sale of an OREO property, any excess of the carrying value over the sale proceeds is recognized as a loss on sale. Any excess of sale proceeds over the carrying value of the OREO property is first applied as a recovery to the valuation allowance, if any, with the remainder being recognized as a gain on sale. Operating expenses and changes in the valuation allowance relating to foreclosed assets are included in other non-interest expense on the consolidated statements of income.
Mortgage Servicing	Mortgage Servicing. Servicing assets are recognized as separate assets when servicing rights are acquired through the sale of residential mortgage loans with servicing retained. Capitalized servicing rights, which are reported in other assets on the consolidated statements of condition, are initially recorded at fair value and are amortized in proportion to, and over the period of, the estimated future servicing of the underlying mortgages (typically, the contractual life of the mortgage). Servicing assets are evaluated for impairment based upon the fair value of the rights as compared to amortized cost. Impairment is determined by stratifying rights by predominant characteristics, such as interest rates and terms. Fair value is determined using prices for similar assets with similar characteristics, when available, or based upon discounted cash flows using market-based assumptions. Impairment is recognized through a valuation allowance to the extent that fair value is less than the capitalized amount. If it's later determined that all or a portion of the impairment no longer exists, a reduction of the allowance may be recorded increasing income. Servicing fee income is recorded for fees earned for servicing loans for investors. The fees are based on a contractual percentage of the outstanding principal or a fixed amount per loan and are recorded as income within non-interest income on the consolidated statements of income when earned. The amortization of mortgage servicing rights is recorded as a reduction of loan servicing fee income.
Other Borrowed Funds	Other Borrowed Funds. Other borrowed funds consist of commercial and retail repurchase agreements, FHLB overnight and short-term borrowings, federal funds purchased, line of credit advances, and treasury, tax and loan deposits. Retail repurchase agreements generally mature within 30 days and are reflected at the amount of cash received in connection with the transaction. Commercial repurchase agreements are callable quarterly, generally 6 to 24 months after issuance, and mature within five years. The Company may be required to provide additional collateral based on the fair value of the underlying securities. Treasury, tax and loan deposits generally do not have fixed maturity dates.
Income Taxes	Income Taxes. Income taxes are accounted for using the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the future tax implications attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. If current available information raises doubt as to the realization of the deferred tax assets, a valuation allowance is established. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.
Earnings per Share	EPS. Basic EPS excludes dilution and is computed by dividing net income applicable to common stock by the weighted-average number of common shares outstanding for the period. Diluted EPS reflects the potential dilution that could occur if certain securities or other contracts to issue common stock (such as stock options) were exercised or converted into additional common shares that would then share in the earnings of the Company. Diluted EPS is computed by dividing net income applicable to common stock by the weighted-average number of common shares outstanding for the period, plus an incremental number of common-equivalent shares computed using the treasury stock method. Unvested share-based payment awards which include the right to receive non-forfeitable dividends are considered to participate with common stock in undistributed earnings for purposes of computing EPS. Restricted share grants and management stock purchase grants are considered participating securities for this purpose. Accordingly, the Company is required to calculate basic and diluted EPS using the two-class method. The calculation of EPS using the two-class method (i) excludes any dividends paid or owed on participating securities and any undistributed earnings considered to be attributable to participating securities from the numerator and (ii) excludes the dilutive impact of the participating securities from the denominator.
Postretirement and Supplemental Retirement Plans	Postretirement Plans. The Company sponsors various retirement plans for current and former employees, including a postretirement health care plan and life insurance to certain eligible retired employees and a SERP for certain officers of the Company. The cost of providing postretirement health care and life insurance benefits is accrued during the active service period of the employee. The SERP is accrued on a current basis and recognizes costs over the estimated employee service period.
Stock-Based Compensation	Stock-Based Compensation. The fair value of restricted stock and stock options is determined on grant date, adjusted for estimated forfeitures. For restricted stock awards and units, compensation is recognized ratably over the requisite service period equal to the fair value of the award. For stock option awards, the fair value is determined using the Black-Scholes option-pricing model. Compensation expense for stock option awards is recognized ratably over the requisite service period equal to the fair value of the award. For performance-based share awards, the Company estimates the degree to which performance conditions will be met to determine the number of shares that will vest and the related compensation expense. Compensation expense is adjusted in the period such estimates change. Non-forfeitable dividends, if any, paid on shares of restricted stock are recorded to retained earnings for shares that are expected to vest and to compensation expense for shares that are not expected to vest.
Off-Balance Sheet Credit Related Financial Instruments	Off-Balance Sheet Credit Related Financial Instruments. In the ordinary course of business, the Company enters into commitments to extend credit, including commercial letters of credit and standby letters of credit. Such financial instruments are recorded as loans when they are funded.
Derivative Financial Instruments Designated as Hedges	Derivative Financial Instruments Designated as Hedges. The Company recognizes all derivatives in the consolidated statements of condition at fair value. On the date the Company enters into the derivative contract, the Company designates the derivative as a hedge of either a forecasted transaction or the variability of cash flows to be received or paid related to a recognized asset or liability (“cash flow hedge”), a hedge of the fair value of a recognized asset or liability or of an unrecognized firm commitment (“fair value hedge”), or a held for trading instrument (“trading instrument”). The Company formally documents relationships between hedging instruments and hedged items, as well as its risk management objectives and strategy for undertaking various hedge transactions. The Company also assesses, both at the hedge’s inception and on an ongoing basis, whether the derivatives that are used in hedging transactions are effective in offsetting changes in cash flows or fair values of hedged items. Changes in fair value of a derivative that is effective and that qualifies as a cash flow hedge are recorded in OCI and are reclassified into earnings when the forecasted transaction or related cash flows affect earnings. Changes in fair value of a derivative that qualifies as a fair value hedge and the change in fair value of the hedged item are both recorded in earnings and offset each other when the transaction is effective. Those derivatives that are classified as trading instruments are recorded at fair value with changes in fair value recorded in earnings. The Company discontinues hedge accounting when it determines that the derivative is no longer effective in offsetting changes in the cash flows of the hedged item, that it is unlikely that the forecasted transaction will occur, or that the designation of the derivative as a hedging instrument is no longer appropriate.
Segment Reporting	Segment Reporting. The Company, through its bank and non-bank subsidiaries, provides a broad range of financial services to individuals and companies in Maine. These services include lending, checking, savings and time deposits, cash management, brokerage and trust services. While the Company’s management monitors operations of each subsidiary, substantially all revenues, profits, and assets of the Company are derived by the Bank from banking products and services and, therefore, the Company's management did not provide the segment reporting disclosures as such was determined to be immaterial.
Recent Accounting Pronouncements	Recent Accounting Pronouncements. In January 2014, the FASB issued ASU No. 2014-01, Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects. The ASU amends current guidance to permit reporting entities to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. The amendments in this ASU are to be applied retrospectively to all periods presented. A reporting entity that uses the effective yield method to account for its investments in qualified affordable housing projects before the date of adoption may continue to apply such method to those preexisting investments. The ASU is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. The ASU will not have a material effect on the Company's consolidated financial statements. In January 2014, the FASB issued ASU No. 2014-04, Receivables - Troubled Debt Restructurings by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure. The ASU was issued to clarify that if an in substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Additionally, the ASU amendments require interim and annual disclosure of both (i) the amount of foreclosed residential real estate property held by the creditor and (ii) the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure according to local requirements of the applicable jurisdiction. The ASU is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014, with early adoption permitted. The ASU has been adopted using a prospective transition method. The Company has provided for the required disclosures within its consolidated financial statements and the other changes within the ASU did not have a material effect on the Company's consolidated financial statements. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). The ASU was issued to clarify the principles for recognizing revenue and to develop a common revenue standard. The ASU is effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. The Company is currently evaluating the potential impact of the ASU on its consolidated financial statements. In June 2014, the FASB issued ASU No. 2014-11, Transfers and Servicing (Topic 860): Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures. The ASU was issued to respond to concerns about current accounting and disclosures for repurchase agreements and similar transactions. The concern was that under current accounting guidance there is an unnecessary distinction between the accounting for different types of repurchase agreements. Under current guidance, the repurchase-to-maturity transactions are accounted for as sales with forward agreements, whereas repurchase agreements that settle before the maturity of the transferred financial asset are accounted for as secured borrowings. The ASU amendments require new disclosures for repurchase agreements, securities lending transactions, and repurchase-to-maturity transactions accounted for as secure borrowings. The ASU is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. The ASU will not have a material effect on the Company's consolidated financial statements. In June 2014, the 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. The ASU was issued because current U.S. GAAP does not contain explicit guidance on how to account for share-based payments when a performance target could be achieved after the requisite service period. The ASU is effective for annual periods and interim periods within those annual periods beginning after December 15, 2015. The ASU will not have a material effect on the Company's consolidated financial statements. In August 2014, the FASB issued ASU No. 2014-14, Receivables - Troubled Debt Restructurings by Creditors (Subtopic 310-40): Classification of Certain Government-Guaranteed Mortgage Loans upon Foreclosure. The ASU was issued to provide specific guidance on how to classify or measure foreclosed mortgage loans that are government guaranteed. The ASU is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014, and the Company expects to adopt using the prospective transition method. The ASU is not expected to have a material effect on the Company's consolidated financial statements.

Business and Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2014

Principles of Consolidation. The accompanying consolidated financial statements include the accounts of the Company, the Bank, and Acadia Trust. All intercompany accounts and transactions have been eliminated in consolidation. Assets held by Acadia Trust in a fiduciary capacity are not assets of the Company and, therefore, are not included in the consolidated statements of condition. The Company also owns 100% of the common stock of CCTA and UBCT. These entities are unconsolidated subsidiaries of the Company.

Reclassification and presentation

Reclassifications. Certain reclassifications have been made to prior year amounts to conform to the current year's presentation.

Use of Estimates in the Preparation of Financial Statements

Use of Estimates. The preparation of the financial statements in conformity with GAAP 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 periods. Actual results could vary from these estimates. Several estimates are particularly critical and are susceptible to significant near-term change, including the ALL, OREO, income taxes, postretirement benefits and asset impairment judgments, including OTTI of investment securities, goodwill, other intangible assets, stock-based compensation, and effectiveness of hedging derivatives.

Subsequent Events

Subsequent Events. The Company has evaluated events and transactions subsequent to December 31, 2014 for potential recognition or disclosure as required by GAAP.

Significant Concentration of Credit Risk

Significant Concentration of Credit Risk. The Bank grants loans primarily to customers in Maine. Although the Bank has a diversified loan portfolio, a large portion of the Bank's loans are secured by commercial or residential real estate located in Maine and is subject to volatility within Maine's real estate market. Furthermore, the debtors' ability to honor their contracts is highly dependent upon other economic factors throughout Maine. The Bank does not generally engage in non-recourse lending and typically will require the principals of any commercial borrower to obligate themselves personally on the loan.

Cash and Cash Equivalents

Cash and Cash Equivalents. For the purposes of reporting cash flows, cash and cash equivalents consist of cash on hand and amounts due from banks. The Bank is required by the FRB to maintain non-interest bearing cash reserves equal to a percentage of deposits. The Company maintains the reserve balances in cash on hand or at the FRB.

Securities

Securities. Investment securities are classified at the time of purchase as AFS, HTM, or trading. The classification of investment securities is constantly re-evaluated for consistency with corporate goal and objectives. Trading securities are carried at fair value on the consolidated statements of condition with subsequent changes to fair value recorded in earnings. Debt securities that management has the positive intent and ability to hold to maturity are classified as HTM and recorded at amortized cost on the consolidated statements of condition. Investment securities that are not classified as HTM or trading securities are classified as AFS and are carried at fair value on the consolidated statements of condition with subsequent changes to fair value recorded within AOCI, net of tax.

Purchase premiums and discounts are recognized in interest income on the consolidated statements of income using the interest method over the period to maturity and are recorded on the trade date. Gains and losses on the sale of investment securities are recognized within non-interest income on the consolidated statements of income and are recorded on the trade date using the specific identification method.

FHLB and FRB stocks are non-marketable equity securities and are reported at cost and evaluated for impairment.

Management conducts a quarterly review and evaluation of its debt securities portfolio to determine if the decline in fair value of any security appears to be other-than-temporary. The factors considered by management in its review include, but are not limited to: the length of time and the extent to which the fair value has been less than cost, the financial condition and near-term prospects of the issuer, the ratings of the security, whether the decline in fair value appears to be issuer specific or, alternatively, a reflection of general market or industry conditions, and the Company’s intent and ability to hold the security for a period of time sufficient to allow for a recovery in fair value.

Declines in the fair value of individual equity securities that are deemed to be other-than-temporary are reflected in non-interest income on the consolidated statements of income when identified. For individual debt securities where the Company does not intend to sell the security and it is not more-likely-than-not that the Company will be required to sell the security before recovery of its amortized cost basis, the other-than-temporary decline in the fair value of the debt security related to (i) credit loss is recognized in not-interest income on the consolidated statements of income and (ii) other factors is recognized in AOCI, net of tax. For individual debt securities where the Company intends to sell the security or more-likely-than-not will be required to sell the security before recovery of its amortized cost, OTTI is recognized in earnings equal to the entire difference between the security’s cost basis and its fair value.

The Company is a member of the FHLBB. As a requirement of membership, the Company must own a minimum amount of FHLB stock based on the level of its FHLB advances. No market exists for shares of the FHLB and, therefore, they are carried at par value. FHLB stock may be redeemed at par value five years following termination of FHLB membership, subject to limitations which may be imposed by the FHLB or its regulator, the Federal Housing Finance Agency, to maintain capital adequacy of the FHLB. While the Company currently has no intentions to terminate its FHLB membership, the ability to redeem its investment in FHLB stock would be subject to the conditions imposed by the FHLB.

Loans and Allowance for Loan Losses

Loans and Allowance for Loan Losses. Loans are reported at amortized cost adjusted for any partial charge-offs and net of any deferred loan fees or costs.

The ALL is established through provisions for credit losses charged to income. Losses on loans, including impaired loans, are charged to the ALL when all or a portion of a loan is deemed to be uncollectible. Recoveries of loans previously charged off are credited to the ALL when realized.

In determining the appropriate level of ALL, the Company uses a methodology to systematically measure the amount of estimated loan loss exposure inherent in the loan portfolio. The methodology includes four elements: (1) identification of loss allocations for certain specific loans, (2) loss allocation factors for certain loan types based on credit risk and loss experience, (3) general loss allocations for other environmental factors, and (4) the unallocated portion of the allowance.

The specific component relates to loans that have a principal balance of $250,000 or more that are classified as substandard or doubtful and are on non-accrual status. For such loans that are also classified as impaired, an allowance is established when the discounted expected future cash flows (or collateral value or observable market price) of the impaired loan is lower than the recorded investment of that loan. Loans that do not meet the above criteria are separated into risk pools by portfolio segment and risk ratings. The Company then evaluates each risk pool collectively for impairment through loss allocation factors.

The Company uses a risk rating system to determine the credit quality of these loan pools and applies the related loss allocation factors. In assessing the risk rating of a particular loan, the Company considers, among other factors, the obligor’s debt capacity, financial condition, the level of the obligor’s earnings, the amount and sources of repayment, the performance with respect to loan terms, the adequacy of collateral, the level and nature of contingent liabilities, management strength, and the industry in which the obligor operates. These factors are based on an evaluation of historical information, as well as subjective assessment and interpretation of current conditions. Emphasizing one factor over another, or considering additional factors that may be relevant in determining the risk rating of a particular loan but which are not currently an explicit part of the Company's methodology, could impact the risk rating assigned to that loan.

The Company at least annually reassesses and revises the loss allocation factors used in the assignment of loss exposure to appropriately reflect the analysis of loss experience. Portfolios of more homogenous populations of loans including home equity and consumer loans are analyzed as groups taking into account delinquency rates and other economic conditions which may affect the ability of borrowers to meet debt service requirements, including interest rates and energy costs. The Company also considers regulatory guidance, historical loss ranges, portfolio composition, and other changes in the portfolio. An additional allocation is determined based on a judgmental process whereby management considers qualitative and quantitative assessments of other environmental factors. An unallocated portion of the total allowance is maintained to allow for shifts in portfolio composition and to account for uncertainty in the economic environment.

Since the methodology is based upon historical experience and trends, as well as management’s judgment, factors may arise that result in different estimations. Significant factors that could give rise to changes in these estimates may include, but are not limited to, changes in economic conditions in the Company’s market area, concentration of risk, declines in local property values, and regulatory guidance.

Loans past due 30 days or more are considered delinquent. In general, secured loans that are delinquent for 90 consecutive days are placed on non-accrual status, and are subject to impairment and/or loss assessment in accordance with established internal policy. In general, unsecured loans that are delinquent for 90 consecutive days are charged off.

In cases where a borrower experiences financial difficulties and the Company makes certain concessionary modifications to contractual terms, the loan is classified as a TDR. Modifications may include adjustments to interest rates, extensions of maturity, and other actions intended to minimize economic loss and avoid foreclosure or repossession of collateral. An allowance is established on a loan classified as a TDR if the present value of expected future cash flows (or, alternatively, the observable market price of the loan or the fair value of the collateral) is less than the recorded investment of the loan. Non-accrual loans that are restructured as TDRs remain on non-accrual status for a period of at least six months to demonstrate that the borrower can meet the restructured terms. If the restructured loan is on accrual status prior to being modified, it is reviewed to determine if the modified loan should remain on accrual status. If the borrower’s ability to meet the revised payment schedule is not reasonably assured, the loan is classified as a non-accrual loan. Loans classified as TDRs remain classified as such for the life of the loan, except in limited circumstances, when it is determined that the borrower is performing under the modified terms and the restructuring agreement specified an interest rate greater than or equal to an acceptable market rate for a comparable new loan at the time of the restructuring.

Interest and Fees on Loans

Interest and Fees on Loans. Interest on loans is accrued at the contractual rate and recorded as interest income on the consolidated statements of income based upon the principal amount outstanding. Loan origination fees received and certain direct loan origination costs are deferred and recognized in interest income as an adjustment of loan yield over the expected life of the loan using the level-yield method. A loan is classified as non-accrual generally when it becomes 90 days past due as to interest or principal payments. All previously accrued but unpaid interest on non-accrual loans is reversed from interest income in the period in which the loan is considered delinquent. Interest payments received on non-accrual loans, including impaired loans, are applied as a reduction of principal. A loan remains on non-accrual status until all principal and interest amounts contractually due are brought current and future payments are reasonably assured.

Goodwill and Core Deposit Intangible

Goodwill and Core Deposit Intangible. Goodwill represents the excess cost of an acquisition over the fair value of the net assets acquired. Goodwill is not subject to amortization but rather is evaluated at least annually for impairment, or as events and circumstances dictate, at the reporting unit level. The Company's two reporting unit levels are (i) banking and (ii) financial services. The banking reporting unit is representative of the Company's core banking business line, while the financial services reporting unit is representative of the Company's wealth management, trust and services business line. Any impairment is charged to non-interest expense on the consolidated statements of income. Goodwill is evaluated for impairment by the Company utilizing several standard valuation techniques, including discounted cash flow analyses, comparable transaction market multiples, and an estimation of the impact of business conditions and investor activities on the long-term value of the goodwill.

The Company tests goodwill for impairment annually as of November 30^th utilizing the two-step process and fair value guidance outlined in GAAP. Step one compares the fair value of the reporting unit to its carrying value. If the fair value of the reporting unit is greater than its carrying value, then the reporting unit is not deemed to be impaired and no further assessment is required. However, if the fair value of the reporting unit is below its carrying value, GAAP requires that step two of the goodwill impairment test be performed. Step two involves a process similar to business combination accounting in which fair value is assigned to all assets, liabilities and other identified intangibles. The result of step two is calculating the implied fair value of goodwill for the reporting unit. If the implied fair value of goodwill for the reporting unit is greater than its carrying value, then the reporting unit’s goodwill is not impaired. However, if the reporting unit’s implied fair value of goodwill is below its carrying value, an impairment charge is recorded to mark the carrying value of goodwill to the calculated implied fair value. The Company completed its annual goodwill impairment testing as of November 30, 2014 for each reporting unit and passed step one. As such, step two of the goodwill impairment test was not performed and no goodwill impairment was recognized in 2014.

Core deposit intangible represents the estimated value of acquired customer relationships and is amortized on a straight-line basis over the estimated life of those relationships (5 to 10 years from the acquisition dates). Core deposit intangibles are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. If necessary, management will test the core deposit intangibles for impairment by comparing its carrying value to the expected undiscounted cash flows of the assets. If the undiscounted cash flows of the intangible assets exceed its carrying value then the intangible assets are deemed to be fully recoverable and not impaired. However, if the undiscounted cash flows of the intangible assets are less than its carrying value then management must compare the fair value of the intangible assets to its carrying value. If the fair value of the intangible assets exceeds its carrying value then the intangible assets are not impaired. If the fair value of the intangible assets is less than its carrying value then an impairment charge is recorded to mark the carrying value of the intangible assets to fair value. For the year ended December 31, 2014, there were no events or changes in circumstances that indicated the carrying amount may not be recoverable.

Bank-Owned Life Insurance

BOLI. BOLI represents the CSV of life insurance policies on the lives of certain active and retired employees where the Company is the beneficiary. The CSV of the policies is recorded as an asset. Increases in the CSV of the policies, as well as death benefits received, net of any CSV, are recorded in non-interest income on the consolidated statements of income, and are not subject to income taxes. The Company reviews the financial strength of the insurance carriers prior to the purchase of life insurance policies and no less than annually thereafter. A life insurance policy with any individual carrier is limited to 15% of Tier I capital (as defined for regulatory purposes) and the total CSV of life insurance policies is limited to 25% of Tier I capital.

Premises and Equipment

Premises and Equipment. Premises and equipment are stated at cost less accumulated depreciation and amortization. Depreciation and amortization are computed on the straight-line method over the estimated useful lives of the related assets. Leasehold improvements are amortized over the lesser of the term of the respective lease or the estimated life of the improvement. Land is carried at cost.

OREO

OREO. OREO properties acquired through foreclosure or deed-in-lieu of foreclosure are recorded initially at estimated fair value less estimated costs to sell. Any write-down of the recorded investment in the related loan is charged to the ALL upon transfer to OREO. Upon acquisition of a property, an appraisal or a broker’s opinion is used to substantiate fair value of the property. Any subsequent declines in the fair value of a property are recorded as a valuation allowance on the asset. Any subsequent increases in the fair value of a property are recorded as reductions of the valuation allowance, but not below zero. Upon a sale of an OREO property, any excess of the carrying value over the sale proceeds is recognized as a loss on sale. Any excess of sale proceeds over the carrying value of the OREO property is first applied as a recovery to the valuation allowance, if any, with the remainder being recognized as a gain on sale. Operating expenses and changes in the valuation allowance relating to foreclosed assets are included in other non-interest expense on the consolidated statements of income.

Mortgage Servicing

Mortgage Servicing. Servicing assets are recognized as separate assets when servicing rights are acquired through the sale of residential mortgage loans with servicing retained. Capitalized servicing rights, which are reported in other assets on the consolidated statements of condition, are initially recorded at fair value and are amortized in proportion to, and over the period of, the estimated future servicing of the underlying mortgages (typically, the contractual life of the mortgage). Servicing assets are evaluated for impairment based upon the fair value of the rights as compared to amortized cost. Impairment is determined by stratifying rights by predominant characteristics, such as interest rates and terms. Fair value is determined using prices for similar assets with similar characteristics, when available, or based upon discounted cash flows using market-based assumptions. Impairment is recognized through a valuation allowance to the extent that fair value is less than the capitalized amount. If it's later determined that all or a portion of the impairment no longer exists, a reduction of the allowance may be recorded increasing income.

Servicing fee income is recorded for fees earned for servicing loans for investors. The fees are based on a contractual percentage of the outstanding principal or a fixed amount per loan and are recorded as income within non-interest income on the consolidated statements of income when earned. The amortization of mortgage servicing rights is recorded as a reduction of loan servicing fee income.

Other Borrowed Funds

Other Borrowed Funds. Other borrowed funds consist of commercial and retail repurchase agreements, FHLB overnight and short-term borrowings, federal funds purchased, line of credit advances, and treasury, tax and loan deposits. Retail repurchase agreements generally mature within 30 days and are reflected at the amount of cash received in connection with the transaction. Commercial repurchase agreements are callable quarterly, generally 6 to 24 months after issuance, and mature within five years. The Company may be required to provide additional collateral based on the fair value of the underlying securities. Treasury, tax and loan deposits generally do not have fixed maturity dates.

Income Taxes

Income Taxes. Income taxes are accounted for using the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the future tax implications attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. If current available information raises doubt as to the realization of the deferred tax assets, a valuation allowance is established. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.

Earnings per Share

EPS. Basic EPS excludes dilution and is computed by dividing net income applicable to common stock by the weighted-average number of common shares outstanding for the period. Diluted EPS reflects the potential dilution that could occur if certain securities or other contracts to issue common stock (such as stock options) were exercised or converted into additional common shares that would then share in the earnings of the Company. Diluted EPS is computed by dividing net income applicable to common stock by the weighted-average number of common shares outstanding for the period, plus an incremental number of common-equivalent shares computed using the treasury stock method.

Unvested share-based payment awards which include the right to receive non-forfeitable dividends are considered to participate with common stock in undistributed earnings for purposes of computing EPS. Restricted share grants and management stock purchase grants are considered participating securities for this purpose. Accordingly, the Company is required to calculate basic and diluted EPS using the two-class method. The calculation of EPS using the two-class method (i) excludes any dividends paid or owed on participating securities and any undistributed earnings considered to be attributable to participating securities from the numerator and (ii) excludes the dilutive impact of the participating securities from the denominator.

Postretirement and Supplemental Retirement Plans

Postretirement Plans. The Company sponsors various retirement plans for current and former employees, including a postretirement health care plan and life insurance to certain eligible retired employees and a SERP for certain officers of the Company. The cost of providing postretirement health care and life insurance benefits is accrued during the active service period of the employee. The SERP is accrued on a current basis and recognizes costs over the estimated employee service period.

Stock-Based Compensation

Stock-Based Compensation. The fair value of restricted stock and stock options is determined on grant date, adjusted for estimated forfeitures. For restricted stock awards and units, compensation is recognized ratably over the requisite service period equal to the fair value of the award. For stock option awards, the fair value is determined using the Black-Scholes option-pricing model. Compensation expense for stock option awards is recognized ratably over the requisite service period equal to the fair value of the award. For performance-based share awards, the Company estimates the degree to which performance conditions will be met to determine the number of shares that will vest and the related compensation expense. Compensation expense is adjusted in the period such estimates change. Non-forfeitable dividends, if any, paid on shares of restricted stock are recorded to retained earnings for shares that are expected to vest and to compensation expense for shares that are not expected to vest.

Off-Balance Sheet Credit Related Financial Instruments

Off-Balance Sheet Credit Related Financial Instruments. In the ordinary course of business, the Company enters into commitments to extend credit, including commercial letters of credit and standby letters of credit. Such financial instruments are recorded as loans when they are funded.

Derivative Financial Instruments Designated as Hedges

Derivative Financial Instruments Designated as Hedges. The Company recognizes all derivatives in the consolidated statements of condition at fair value. On the date the Company enters into the derivative contract, the Company designates the derivative as a hedge of either a forecasted transaction or the variability of cash flows to be received or paid related to a recognized asset or liability (“cash flow hedge”), a hedge of the fair value of a recognized asset or liability or of an unrecognized firm commitment (“fair value hedge”), or a held for trading instrument (“trading instrument”). The Company formally documents relationships between hedging instruments and hedged items, as well as its risk management objectives and strategy for undertaking various hedge transactions. The Company also assesses, both at the hedge’s inception and on an ongoing basis, whether the derivatives that are used in hedging transactions are effective in offsetting changes in cash flows or fair values of hedged items. Changes in fair value of a derivative that is effective and that qualifies as a cash flow hedge are recorded in OCI and are reclassified into earnings when the forecasted transaction or related cash flows affect earnings. Changes in fair value of a derivative that qualifies as a fair value hedge and the change in fair value of the hedged item are both recorded in earnings and offset each other when the transaction is effective. Those derivatives that are classified as trading instruments are recorded at fair value with changes in fair value recorded in earnings. The Company discontinues hedge accounting when it determines that the derivative is no longer effective in offsetting changes in the cash flows of the hedged item, that it is unlikely that the forecasted transaction will occur, or that the designation of the derivative as a hedging instrument is no longer appropriate.

Segment Reporting

Segment Reporting. The Company, through its bank and non-bank subsidiaries, provides a broad range of financial services to individuals and companies in Maine. These services include lending, checking, savings and time deposits, cash management, brokerage and trust services. While the Company’s management monitors operations of each subsidiary, substantially all revenues, profits, and assets of the Company are derived by the Bank from banking products and services and, therefore, the Company's management did not provide the segment reporting disclosures as such was determined to be immaterial.

Recent Accounting Pronouncements

Recent Accounting Pronouncements. In January 2014, the FASB issued ASU No. 2014-01, Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects. The ASU amends current guidance to permit reporting entities to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. The amendments in this ASU are to be applied retrospectively to all periods presented. A reporting entity that uses the effective yield method to account for its investments in qualified affordable housing projects before the date of adoption may continue to apply such method to those preexisting investments. The ASU is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. The ASU will not have a material effect on the Company's consolidated financial statements.

In January 2014, the FASB issued ASU No. 2014-04, Receivables - Troubled Debt Restructurings by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure. The ASU was issued to clarify that if an in substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Additionally, the ASU amendments require interim and annual disclosure of both (i) the amount of foreclosed residential real estate property held by the creditor and (ii) the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure according to local requirements of the applicable jurisdiction. The ASU is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014, with early adoption permitted. The ASU has been adopted using a prospective transition method. The Company has provided for the required disclosures within its consolidated financial statements and the other changes within the ASU did not have a material effect on the Company's consolidated financial statements.

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). The ASU was issued to clarify the principles for recognizing revenue and to develop a common revenue standard. The ASU is effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. The Company is currently evaluating the potential impact of the ASU on its consolidated financial statements.

In June 2014, the FASB issued ASU No. 2014-11, Transfers and Servicing (Topic 860): Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures. The ASU was issued to respond to concerns about current accounting and disclosures for repurchase agreements and similar transactions. The concern was that under current accounting guidance there is an unnecessary distinction between the accounting for different types of repurchase agreements. Under current guidance, the repurchase-to-maturity transactions are accounted for as sales with forward agreements, whereas repurchase agreements that settle before the maturity of the transferred financial asset are accounted for as secured borrowings. The ASU amendments require new disclosures for repurchase agreements, securities lending transactions, and repurchase-to-maturity transactions accounted for as secure borrowings. The ASU is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. The ASU will not have a material effect on the Company's consolidated financial statements.

In June 2014, the 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. The ASU was issued because current U.S. GAAP does not contain explicit guidance on how to account for share-based payments when a performance target could be achieved after the requisite service period. The ASU is effective for annual periods and interim periods within those annual periods beginning after December 15, 2015. The ASU will not have a material effect on the Company's consolidated financial statements.

In August 2014, the FASB issued ASU No. 2014-14, Receivables - Troubled Debt Restructurings by Creditors (Subtopic 310-40): Classification of Certain Government-Guaranteed Mortgage Loans upon Foreclosure. The ASU was issued to provide specific guidance on how to classify or measure foreclosed mortgage loans that are government guaranteed. The ASU is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014, and the Company expects to adopt using the prospective transition method. The ASU is not expected to have a material effect on the Company's consolidated financial statements.