Fair Value of Financial Instruments (Fair Value by Balance Sheet Grouping) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	$ 37,276	$ 27,554
Investment securities - AFS, fair value	227,795	221,117
Investment securities - AFS, carrying amount	227,795us-gaap_AvailableForSaleSecurities	221,117us-gaap_AvailableForSaleSecurities	221,117us-gaap_AvailableForSaleSecurities
Interest bearing deposits	7,949	7,897
Investment securities - HTM	111,320	110,771	110,771
Restricted bank stock	7,138func_RestrictedBankStock	7,524func_RestrictedBankStock
Loans, net	827,476	830,904
Accrued interest receivable	3,779	4,152
Deposits - non-maturity	716,477	689,581
Deposits - time deposits	287,323func_TimeDepositsFairValueDisclosure	296,713func_TimeDepositsFairValueDisclosure
Short-term borrowed funds	34,576us-gaap_ShorttermDebtFairValue	39,801us-gaap_ShorttermDebtFairValue
Long-term borrowed funds	181,705us-gaap_LongTermDebtFairValue	187,143us-gaap_LongTermDebtFairValue
Accrued interest payable	860	882
Financial derivative	164	199
Off balance sheet financial instruments	0	0
Cash and due from banks, carrying amount	37,276us-gaap_CashAndDueFromBanks	27,554us-gaap_CashAndDueFromBanks	27,554us-gaap_CashAndDueFromBanks
Available-for-sale securities, amortized cost basis	234,683		231,745
Interest bearing deposits in banks, carrying amount	7,949us-gaap_InterestBearingDepositsInBanks	7,897us-gaap_InterestBearingDepositsInBanks	7,897us-gaap_InterestBearingDepositsInBanks
Held-to-maturity amortized cost	109,040us-gaap_HeldToMaturitySecurities	109,449us-gaap_HeldToMaturitySecurities	109,449us-gaap_HeldToMaturitySecurities
Restricted bank stock, carrying amount	7,138us-gaap_RestrictedInvestments	7,524us-gaap_RestrictedInvestments	7,524us-gaap_RestrictedInvestments
Loans, net, carrying amount	824,699	827,926	827,926
Accrued interest receivable, carrying amount	3,779us-gaap_InterestReceivable	4,152us-gaap_InterestReceivable
Deposits - non-maturity, carrying amount	716,477func_NonMaturityDepositsCarryingAmount	689,581func_NonMaturityDepositsCarryingAmount
Deposits - time deposits, carrying amount	282,669us-gaap_TimeDeposits	291,742us-gaap_TimeDeposits
Short-term borrowings	34,576us-gaap_ShortTermBorrowings	39,801us-gaap_ShortTermBorrowings	39,801us-gaap_ShortTermBorrowings
Long-term borrowings	177,589us-gaap_LongTermDebt	182,606us-gaap_LongTermDebt	182,606us-gaap_LongTermDebt
Accrued interest payable, carrying amount	860	882
Financial derivative, carrying amount	164	199
Off-Balance Sheet risks, amount, liability, carrying amount	0	0
Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	37,276	27,554
Interest bearing deposits	7,949	7,897
Off balance sheet financial instruments	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities - AFS, fair value	199,404	195,778
Investment securities - HTM	108,792	108,163
Restricted bank stock	7,138	7,524
Accrued interest receivable	3,779	4,152
Deposits - non-maturity	716,477	689,581
Deposits - time deposits	287,323	296,713
Short-term borrowed funds	34,576	39,801
Long-term borrowed funds	181,705	187,143
Accrued interest payable	860	882
Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities - AFS, fair value	28,391	25,339
Investment securities - HTM	2,528	2,608
Loans, net	827,476	830,904
Financial derivative	$ 164	$ 199

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. Includes disclosure of claims held for interest amounts due a company.

No definition available.