Fair Value of Financial Instruments - Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Assets
Securities available for sale, at fair value	$ 362,800	$ 340,349	[1]
Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
Assets
Securities available for sale, at fair value		0
Significant Other Observable Inputs Level 2 [Member]
Assets
Securities available for sale, at fair value	362,477	338,863
Significant Unobservable Inputs Level 3 [Member]
Assets
Securities available for sale, at fair value	0	1,486
Fair Value, Measurements, Recurring [Member]
Assets
Securities available for sale, at fair value	362,800	340,349
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
Assets
Securities available for sale, at fair value	0	0
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs Level 2 [Member]
Assets
Securities available for sale, at fair value	362,800	338,863
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs Level 3 [Member]
Assets
Securities available for sale, at fair value	0	1,486
Federal agencies and GSEs [Member]
Assets
Securities available for sale, at fair value	100,728	81,452
Federal agencies and GSEs [Member] | Fair Value, Measurements, Recurring [Member]
Assets
Securities available for sale, at fair value	100,728	81,452
Federal agencies and GSEs [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
Assets
Securities available for sale, at fair value	0	0
Federal agencies and GSEs [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs Level 2 [Member]
Assets
Securities available for sale, at fair value	100,728	81,452
Federal agencies and GSEs [Member] | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs Level 3 [Member]
Assets
Securities available for sale, at fair value	0	0
Mortgage-backed and CMOs [Member]
Assets
Securities available for sale, at fair value	82,396	70,930
Mortgage-backed and CMOs [Member] | Fair Value, Measurements, Recurring [Member]
Assets
Securities available for sale, at fair value	82,396	70,930
Mortgage-backed and CMOs [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
Assets
Securities available for sale, at fair value	0	0
Mortgage-backed and CMOs [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs Level 2 [Member]
Assets
Securities available for sale, at fair value	82,396	70,930
Mortgage-backed and CMOs [Member] | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs Level 3 [Member]
Assets
Securities available for sale, at fair value	0	0
State and municipal [Member]
Assets
Securities available for sale, at fair value	168,935	175,891
State and municipal [Member] | Fair Value, Measurements, Recurring [Member]
Assets
Securities available for sale, at fair value	168,935	175,891
State and municipal [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
Assets
Securities available for sale, at fair value	0	0
State and municipal [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs Level 2 [Member]
Assets
Securities available for sale, at fair value	168,935	175,891
State and municipal [Member] | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs Level 3 [Member]
Assets
Securities available for sale, at fair value	0	0
Corporate [Member]
Assets
Securities available for sale, at fair value	8,839	10,590
Corporate [Member] | Fair Value, Measurements, Recurring [Member]
Assets
Securities available for sale, at fair value	8,839	10,590
Corporate [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
Assets
Securities available for sale, at fair value	0	0
Corporate [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs Level 2 [Member]
Assets
Securities available for sale, at fair value	8,839	10,590
Corporate [Member] | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs Level 3 [Member]
Assets
Securities available for sale, at fair value	0	0
Equity securities [Member]
Assets
Securities available for sale, at fair value	1,902	1,486
Equity securities [Member] | Fair Value, Measurements, Recurring [Member]
Assets
Securities available for sale, at fair value	1,902	1,486
Equity securities [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
Assets
Securities available for sale, at fair value	0	0
Equity securities [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs Level 2 [Member]
Assets
Securities available for sale, at fair value	1,902	$ 0
Equity securities [Member] | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs Level 3 [Member]
Assets
Securities available for sale, at fair value	$ 0

[1] Derived from audited consolidated financial statements.