Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Fair value measurements of assets on a recurring basis
Investment securities available for sale, at fair value	$ 167,226	$ 144,293
Fair Value, Measurements, Recurring Basis [Member]
Fair value measurements of assets on a recurring basis
Total	167,226	144,293
U.S. Treasury and U.S. Government-sponsored agencies [Member] | Fair Value, Measurements, Recurring Basis [Member]
Fair value measurements of assets on a recurring basis
Investment securities available for sale, at fair value	6,071	11,035
Municipal Bonds [Member] | Fair Value, Measurements, Recurring Basis [Member]
Fair value measurements of assets on a recurring basis
Investment securities available for sale, at fair value	50,387	47,360
U.S. Government-sponsored agencies [Member] | Fair Value, Measurements, Recurring Basis [Member]
Fair value measurements of assets on a recurring basis
Investment securities available for sale, at fair value	110,768	85,898
Level 1 [Member]
Fair value measurements of assets on a recurring basis
Investment securities available for sale, at fair value	0	0
Level 1 [Member] | Fair Value, Measurements, Recurring Basis [Member]
Fair value measurements of assets on a recurring basis
Total	0	0
Level 1 [Member] | U.S. Treasury and U.S. Government-sponsored agencies [Member] | Fair Value, Measurements, Recurring Basis [Member]
Fair value measurements of assets on a recurring basis
Investment securities available for sale, at fair value	0	0
Level 1 [Member] | Municipal Bonds [Member] | Fair Value, Measurements, Recurring Basis [Member]
Fair value measurements of assets on a recurring basis
Investment securities available for sale, at fair value	0	0
Level 1 [Member] | U.S. Government-sponsored agencies [Member] | Fair Value, Measurements, Recurring Basis [Member]
Fair value measurements of assets on a recurring basis
Investment securities available for sale, at fair value	0	0
Level 2 [Member]
Fair value measurements of assets on a recurring basis
Investment securities available for sale, at fair value	167,226	144,293
Level 2 [Member] | Fair Value, Measurements, Recurring Basis [Member]
Fair value measurements of assets on a recurring basis
Total	167,226	144,293
Level 2 [Member] | U.S. Treasury and U.S. Government-sponsored agencies [Member] | Fair Value, Measurements, Recurring Basis [Member]
Fair value measurements of assets on a recurring basis
Investment securities available for sale, at fair value	6,071	11,035
Level 2 [Member] | Municipal Bonds [Member] | Fair Value, Measurements, Recurring Basis [Member]
Fair value measurements of assets on a recurring basis
Investment securities available for sale, at fair value	50,387	47,360
Level 2 [Member] | U.S. Government-sponsored agencies [Member] | Fair Value, Measurements, Recurring Basis [Member]
Fair value measurements of assets on a recurring basis
Investment securities available for sale, at fair value	110,768	85,898
Level 3 [Member]
Fair value measurements of assets on a recurring basis
Investment securities available for sale, at fair value	0	0
Level 3 [Member] | Fair Value, Measurements, Recurring Basis [Member]
Fair value measurements of assets on a recurring basis
Total	0	0
Level 3 [Member] | U.S. Treasury and U.S. Government-sponsored agencies [Member] | Fair Value, Measurements, Recurring Basis [Member]
Fair value measurements of assets on a recurring basis
Investment securities available for sale, at fair value	0	0
Level 3 [Member] | Municipal Bonds [Member] | Fair Value, Measurements, Recurring Basis [Member]
Fair value measurements of assets on a recurring basis
Investment securities available for sale, at fair value	0	0
Level 3 [Member] | U.S. Government-sponsored agencies [Member] | Fair Value, Measurements, Recurring Basis [Member]
Fair value measurements of assets on a recurring basis
Investment securities available for sale, at fair value	$ 0	$ 0