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Investment Securities - Textual (Details)	12 Months Ended
	Dec. 31, 2015 USD ($) security	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Schedule of Available-for-sale Securities
Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax	$ 7,474,000	$ 8,896,000
Transfer of securities from available-for-sale to held-to-maturity	0	31,346,000	$ 0
Available-for-sale Securities, Transferred to Held-to-maturity Securities, Fair Value		31,509,000
Unrealized gain on transfer of securities from available-for-sale to held-to-maturity	0	163,000	0
Other than Temporary Impairment Losses, Investments, Accretion of Noncredit Portion, Available-for-sale Securities Transferred to Held-to-maturity Securities, before Tax	78,000	21,000
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	615,000	372,000	$ 521,000
Accumulated Other Comprehensive Income Available For Sale Securities Adjustment Tax	$ 3,076,000	3,661,000
Threshold Period of Value Decline in Available-for-sale Securities to be considered Other than Temporary Impairment	12 months
Threshold Percentage of Value Decline in Available-for-sale Securities to be considered Other than Temporary Impairment	10.00%
Threshold Amount of Value Decline in Available-for-sale Securities to be considered Other than Temporary Impairment	$ 10,000
Debt securities, amortized cost	470,080,000
OTTI charge	0	0
Available-for-sale investment securities, Amortized cost	470,080,000	423,639,000
Available-for-sale Securities Pledged as Collateral	119,773,000	100,747,000
Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Loss, before Tax, Including Portion Attributable to Noncontrolling Interest, AFS Transferred to HTM Securities	64,000	142,000
Securities Pledged as Collateral
Schedule of Available-for-sale Securities
Available-for-sale investment securities, Amortized cost	$ 116,268,000	96,490,000
U.S. Government agencies
Schedule of Available-for-sale Securities
Available-for-sale Securities, Number of Positions | security	17
Debt securities, amortized cost	$ 52,803,000	33,088,000
U.S. Government agencies | Less than 12 months
Schedule of Available-for-sale Securities
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions | security	7
U.S. Government agencies | Greater than 12 months
Schedule of Available-for-sale Securities
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions | security	1
Obligations of states and political subdivisions
Schedule of Available-for-sale Securities
Available-for-sale Securities, Number of Positions | security	154
Debt securities, amortized cost	$ 181,785,000	143,343,000
Obligations of states and political subdivisions | Less than 12 months
Schedule of Available-for-sale Securities
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions | security	13
Obligations of states and political subdivisions | Greater than 12 months
Schedule of Available-for-sale Securities
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions | security	0
U.S. Government agencies collateralized by residential mortgage obligations
Schedule of Available-for-sale Securities
Available-for-sale Securities, Number of Positions | security	186
Debt securities, amortized cost	$ 225,636,000	236,629,000
U.S. Government agencies collateralized by residential mortgage obligations | Less than 12 months
Schedule of Available-for-sale Securities
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions | security	48
U.S. Government agencies collateralized by residential mortgage obligations | Greater than 12 months
Schedule of Available-for-sale Securities
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions | security	14
Private label residential mortgage backed securities
Schedule of Available-for-sale Securities
Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax	$ 1,234,000
Available-for-sale Securities, Number of Positions | security	17
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions | security	0
Debt securities, amortized cost	$ 2,356,000	$ 3,079,000
Private label residential mortgage backed securities | External Credit Rating, Non Investment Grade [Member]
Schedule of Available-for-sale Securities
Available-for-sale Securities, Number of Positions | security	9
Debt securities, amortized cost	$ 2,094,000

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