Disclosures About Fair Value of Financial Instruments - Estimated fair values of Corporation's financial instruments and level within fair value hierarchy (Unaudited) (Details 4) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Carrying Amount
Assets
Cash and cash equivalents	$ 17,855	$ 10,244
Interest-bearing deposits	1,984	1,984
Loans, held for sale		341
Loans, net of allowance for losses	312,610	316,228
Stock in Federal Home Loan Bank	4,595	4,595
Interest receivable	2,107	2,178
Liabilities
Deposits	401,246	395,015
Borrowings	42,717	49,717
Interest payable	246	270
Fair Value Measurements Using Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Cash and cash equivalents	17,855	10,244
Interest-bearing deposits	1,984	1,984
Loans, held for sale
Loans, net of allowance for losses
Stock in Federal Home Loan Bank
Interest receivable
Liabilities
Deposits
Borrowings
Interest payable
Fair Value Measurements Using Significant Other Observable Inputs (Level 2)
Assets
Cash and cash equivalents
Interest-bearing deposits
Loans, held for sale		341
Loans, net of allowance for losses	324,870	330,073
Stock in Federal Home Loan Bank	4,595	4,595
Interest receivable	2,107	2,178
Liabilities
Deposits	401,979	395,924
Borrowings	37,386	44,538
Interest payable	246	270
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Assets
Cash and cash equivalents
Interest-bearing deposits
Loans, held for sale
Loans, net of allowance for losses
Stock in Federal Home Loan Bank
Interest receivable
Liabilities
Deposits
Borrowings	7,220	7,218
Interest payable