Income Tax (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Currently payable
Federal	$ 5,582	$ 4,034	$ 3,018
State	120	44	37
Deferred	2,744	108	(113)
Total income tax expense	8,446	4,186	2,942
Reconciliation of federal statutory to actual tax expense
Federal statutory income tax at 34%	9,800	5,774	4,555
Tax exempt interest	(1,419)	(1,416)	(1,453)
Tax exempt income	(359)	(457)	(273)
Nondeductible and other	(177)	216	81
Effect of state income taxes	601	69	32
Total income tax expense	$ 8,446	$ 4,186	$ 2,942

Income tax reconciliation tax exempt interest income.

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The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted federal tax law to the domestic taxable Income or Loss from continuing operations.

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The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted state and local tax law to relevant amounts of taxable Income or Loss from continuing operations.

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The component of income tax expense for the period representing the increase (decrease) in the entity's deferred tax assets and liabilities pertaining to continuing operations.

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The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to pretax Income or Loss from continuing operations; income tax expense or benefit may include interest and penalties on tax uncertainties based on the entity's accounting policy.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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The sum of the differences between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to nondeductible expenses under enacted tax laws, or differences in the methodologies used to determine expense amounts for financial statements prepared in accordance with generally accepted accounting principles and enacted tax laws.

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