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The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others that do not have stated maturities.

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Deposits with no stated maturities fair value disclosure.

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Deposits with stated maturities fair value disclosure.

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Regulatory assets fair value disclosure.

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Fair value portion of trade and related party payables and accrued expenses.

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Fair value portion of amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties.

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Interest, dividends, rents, ancillary and other revenues earned but not yet received by the entity on its investments.

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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The carrying amount of a life insurance policy on an officer, executive or employee for which the reporting entity (a bank) is entitled to proceeds from the policy upon death of the insured or surrender of the insurance policy.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value portion of the amount that could be realized under a life insurance contract or contracts owned by the entity, commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI).

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Amount of advances from Federal Home Loan Bank (FHLBank) maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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-Paragraph 1

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Fair value portion of borrowing from Federal Home Loan Bank (FHLBank).

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Amount of Federal Home Loan Bank (FHLB) and Federal Reserve Bank stock.

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Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.

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Fair value of investments in debt securities classified as held-to-maturity.

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Amount of interest payable on debt, including, but not limited to, trade payables.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

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Amount classified as mortgage loans attributable to disposal group held for sale or disposed of. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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The carrying amount as of the balance sheet date for the aggregate of other miscellaneous borrowings owed by the reporting entity.

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DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
FINANCIAL ASSETS: Carrying Value
Cash and cash equivalents	$ 32,872	$ 30,066	$ 26,820	$ 34,783
Investment securities - HTM	19,840us-gaap_HeldToMaturitySecurities	18,187us-gaap_HeldToMaturitySecurities
Regulatory stock	6,173	6,802
Loans held for sale	5,051us-gaap_LoansHeldForSaleMortgages	3,402us-gaap_LoansHeldForSaleMortgages
Loans, net of allowance for loan loss and unearned income	817,457	773,242
Accrued income receivable	3,127	2,908
Bank owned life insurance	37,417us-gaap_BankOwnedLifeInsurance	36,669us-gaap_BankOwnedLifeInsurance
Cash and cash equivalents	32,872	30,066
Available for sale	127,110us-gaap_AvailableForSaleSecurities	141,978us-gaap_AvailableForSaleSecurities
Investment securities - HTM	20,213	17,788
Regulatory stock	6,173	6,802
Loans held for sale	5,127	3,453
Loans, net of allowance for loan loss and unearned income	819,935	771,460
Accrued income receivable	3,127	2,908
Bank owned life insurance	37,417	36,669
FINANCIAL LIABILITIES: Carrying Value
Deposits with no stated maturities	568,625asrv_DepositsWithNoStatedMaturities	546,384asrv_DepositsWithNoStatedMaturities
Deposits with stated maturities	301,256asrv_DepositsWithStatedMaturities	308,138asrv_DepositsWithStatedMaturities
Short-term borrowings	38,880	41,555
All other borrowings	55,085us-gaap_OtherBorrowings	38,085us-gaap_OtherBorrowings
Accrued interest payable	1,706	1,784
Deposits with no stated maturities	568,625	546,384
Deposits with stated maturities	304,744	313,272
Short-term borrowings	38,880	41,555
All other borrowings	59,256	40,598
Accrued interest payable	1,706	1,784
Level 1 [Member]
FINANCIAL ASSETS: Carrying Value
Cash and cash equivalents	32,872	30,066
Available for sale
Investment securities - HTM
Regulatory stock	6,173	6,802
Loans held for sale	5,127	3,453
Loans, net of allowance for loan loss and unearned income
Accrued income receivable	3,127	2,908
Bank owned life insurance	37,417	36,669
FINANCIAL LIABILITIES: Carrying Value
Deposits with no stated maturities	568,625	546,384
Deposits with stated maturities
Short-term borrowings	38,880	41,555
All other borrowings
Accrued interest payable	1,706	1,784
Level 2 [Member]
FINANCIAL ASSETS: Carrying Value
Cash and cash equivalents
Available for sale	127,110	141,978
Investment securities - HTM	17,241	14,822
Regulatory stock
Loans held for sale
Loans, net of allowance for loan loss and unearned income
Accrued income receivable
Bank owned life insurance
FINANCIAL LIABILITIES: Carrying Value
Deposits with no stated maturities
Deposits with stated maturities
Short-term borrowings
All other borrowings
Accrued interest payable
Level 3 [Member]
FINANCIAL ASSETS: Carrying Value
Cash and cash equivalents
Available for sale
Investment securities - HTM	2,972	2,966
Regulatory stock
Loans held for sale
Loans, net of allowance for loan loss and unearned income	819,935	771,460
Accrued income receivable
Bank owned life insurance
FINANCIAL LIABILITIES: Carrying Value
Deposits with no stated maturities
Deposits with stated maturities	304,744	313,272
Short-term borrowings
All other borrowings	59,256	40,598
Accrued interest payable