Securities (Details 3) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Amortized cost and estimated fair value of all debt securities
Available-for-sale, Amortized Cost, Due in one year or less	$ 1,547
Available-for-sale, Amortized Cost, Due after one to five years	8,041
Available-for-sale, Amortized Cost, Due after five to ten years	25,011
Available-for-sale, Amortized Cost, Due after ten years	12,493
Available-for-sale, Amortized Cost, Mortgage-backed and related securities	40,465
Available-for-sale, Amortized Cost, Total	87,557
Available-for-sale, Fair Value, Due in one year or less	1,557
Available-for-sale, Fair Value, Due after one to five years	8,110
Available-for-sale, Fair Value, Due after five to ten years	25,150
Available-for-sale, Fair Value, Fair value, Due after ten years	11,707
Available-for-sale, Fair Value, Mortgage-backed and related securities	40,975
Available-for-sale, Fair Value, Total	87,499
Held-to-maturity, Amortized Cost, Due in one year or less	0
Held-to-maturity, Amortized Cost, Due after one to five years	0
Held-to-maturity, Amortized Cost, Due after five to ten years	0
Held-to-maturity, Amortized Cost, Due after ten years	0
Held-to-maturity, Amortized Cost, Mortgage-backed and related securities	0
Held-to-maturity, Amortized Cost, Total	0	1,149
Held-to-maturity, Fair Value, Due in one year or less	0
Held-to-maturity, Fair Value, Due after one to five years	0
Held-to-maturity, Fair Value, Due after five to ten years	0
Held-to-maturity, Fair Value, Due after ten years	0
Held-to-maturity, Fair Value, Mortgage-backed and related securities	0
Held-to-maturity, Fair Value, Total	$ 0