Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012
Assets
Investment securities available for sale	$ 490,031	$ 386,440
Fair Value Measurements
Other real estate owned	5,592	7,364
Impaired loans with a valuation allowance	10,580	15,242
Amount of valuation allowance	1,452	3,617
Impaired loans	9,100	11,600
Level 1 to Level 2 transfer, assets	0
Level 2 to Level 1 transfer, assets	0
Level 1 to Level 2 transfer, liabilities	0
Level 2 to Level 1 transfer, liabilities	0
Transfers into/out of Level 3, assets	0
Transfers into/out of Level 3, liabilities	0
U.S. Treasury and other U.S. government obligations
Assets
Investment securities available for sale	110,000	98,000
Government sponsored enterprise obligations
Assets
Investment securities available for sale	137,845	85,748
Mortgage-backed securities - government agencies
Assets
Investment securities available for sale	172,693	140,881
Obligations of states and political subdivisions
Assets
Investment securities available for sale	69,493	60,793
Trust preferred securities of financial institutions
Assets
Investment securities available for sale		1,018
Mortgage Servicing Rights (MSR)
Fair Value Measurements
Amount of valuation allowance	0	0
Recurring basis \| Fair value
Assets
Investment securities available for sale	490,031	386,440
Interest rate swaps	299	415
Total assets	490,330	386,855
Liabilities
Interest rate swaps	275	415
Recurring basis \| Level 1
Assets
Investment securities available for sale		1,018
Total assets		1,018
Recurring basis \| Level 2
Assets
Investment securities available for sale	490,031	385,422
Interest rate swaps	299	415
Total assets	490,330	385,837
Liabilities
Interest rate swaps	275	415
Recurring basis \| U.S. Treasury and other U.S. government obligations \| Fair value
Assets
Investment securities available for sale	110,000	98,000
Recurring basis \| U.S. Treasury and other U.S. government obligations \| Level 2
Assets
Investment securities available for sale	110,000	98,000
Recurring basis \| Government sponsored enterprise obligations \| Fair value
Assets
Investment securities available for sale	137,845	85,748
Recurring basis \| Government sponsored enterprise obligations \| Level 2
Assets
Investment securities available for sale	137,845	85,748
Recurring basis \| Mortgage-backed securities - government agencies \| Fair value
Assets
Investment securities available for sale	172,693	140,881
Recurring basis \| Mortgage-backed securities - government agencies \| Level 2
Assets
Investment securities available for sale	172,693	140,881
Recurring basis \| Obligations of states and political subdivisions \| Fair value
Assets
Investment securities available for sale	69,493	60,793
Recurring basis \| Obligations of states and political subdivisions \| Level 2
Assets
Investment securities available for sale	69,493	60,793
Recurring basis \| Trust preferred securities of financial institutions \| Fair value
Assets
Investment securities available for sale		1,018
Recurring basis \| Trust preferred securities of financial institutions \| Level 1
Assets
Investment securities available for sale		1,018
Non-recurring basis
Fair Value Measurements
Losses	(992)	(2,467)
Non-recurring basis \| Fair value
Fair Value Measurements
Impaired loans	9,128	11,625
Non-recurring basis \| Level 3
Fair Value Measurements
Impaired loans	$ 9,128	$ 11,625

The fair value related to impaired financing receivables.

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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

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Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

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Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.

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Amount of transfers of liabilities measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

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Amount of transfers of liabilities measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.

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Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy.

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Amount of transfers of financial instrument classified as a liability into (out of) level 3 of the fair value hierarchy.

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Amount of allowance for credit losses related to recorded investment.

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Fair value as of the balance sheet date of interest rate derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets.

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Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities.

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Carrying amount as of the balance sheet date of other real estate and foreclosed assets. Other real estate may include real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. Foreclosed assets include all assets obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings.

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