Disclosures About Fair Value of Assets and Liabilities (Estimated Fair Values of Financial Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2011
Assets, Carrying Amount
Cash and cash equivalents	$ 31,940	$ 32,778	$ 44,319	$ 55,223
Loans held for sale, carrying amount	993	5,106
Loans net, carrying amount	964,504	969,545
FHLB stock, carrying amount	14,391	14,391
Interest receivable, carrying amount	3,593	3,846
Liabilities, Carrying Amount
Deposits, carrying amount	1,149,717	1,184,009
FHLB advances, carrying amount	96,728	74,675
Other borrowings, carrying amount	11,069	11,606
Interest payable, carrying amount	234	236
Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value
Cash and cash equivalents, fair value	31,940	32,778
Liabilities, fair value
Deposits, fair value	602,009	606,066
Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value
Loans held for sale, fair value	1,001	5,235
FHLB stock, fair value	14,391	14,391
Interest receivable, fair value	3,593	3,846
Liabilities, fair value
FHLB advances, fair value	95,508	75,688
Other borrowings, fair value.	11,067	12,648
Interest payable, fair value	234	236
Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value
Loans, fair value	964,623	993,539
Liabilities, fair value
Deposits, fair value	$ 511,876	$ 589,759