Core Deposit Intangible Assets (Detail Textuals) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Recognized core deposit intangible assets	$ 518,000	$ 25,000
Core Deposits
Finite-Lived Intangible Assets [Line Items]
Recognized core deposit intangible assets	542,000
Accumulated amortization of core deposit intangible assets	24,000
Amortization expenses	$ 20,000	$ 3,000