Income Taxes - Income Tax Reconciliation (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Income Tax Disclosure [Abstract]
Statutory federal income tax rate	35.00%	35.00%
Tax expense (benefit) at statutory rate on income before income taxes	$ 2,299	$ 2,540
Tax-exempt interest on investments	(253)	(219)
State income tax, net of federal benefits	292	326
Income from bank-owned life insurance	(48)	(53)
Income Tax Reconciliation, Merger Expenses Not Deductible	360	0
Other	9	14
Total income taxes	$ 2,659	$ 2,608