Securities (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Securities Details 2
One year or less - amortized cost	$ 5,500
After one year through five years - amortized cost	9,998
After five years through ten years - amortized cost
After ten years - amortized cost
[AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost]	15,498
One year or less - fair value	5,500
After one year through five years - fair value	10,027
After five years through ten years - fair value
After ten years - fair value
[AvailableForSaleSecuritiesDebtMaturitiesFairValue]	15,527
Securities Held to Maturity
One year or less - amortized cost	3,897
After one year through five years - amortized cost	21,581
After five years through ten years - amortized cost	40,084
After ten years - amortized cost	3,990
[HeldToMaturitySecuritiesDebtMaturitiesAmortizedCost]	69,822
One year or less - fair value	3,908
After one year through five years - fair value	22,287
After five years through ten years - fair value	42,129
After ten years - fair value	4,040
[HeldToMaturitySecuritiesDebtMaturitiesFairValue]	72,364
Mortgage-backed securities and collateralized mortgage obligations
Mortgage-backed securities and collateralized mortgage obligations	58,262
Mortgage-backed securities and collateralized mortgage obligations	59,813
Mortgage-backed securities and collateralized mortgage obligations
Mortgage-backed securities and collateralized mortgage obligations
Total available for sale - amortized cost	73,760
Total available for sale - fair value	75,340
Total held to maturity - amortized cost	69,822
Total held to maturity - fair value	$ 72,364