Disclosures About Fair Value of Assets and Liabilities (Estimated Fair Values of Financial Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2011
Assets, Carrying Amount
Cash and cash equivalents	$ 32,884	$ 32,778	$ 23,590	$ 55,223
Loans held for sale, carrying amount	8,312	5,106
Loans net, carrying amount	958,552	969,545
FHLB stock, carrying amount	14,391	14,391
Interest receivable, carrying amount	3,533	3,846
Liabilities, Carrying Amount
Deposits, carrying amount	1,154,426	1,184,009
FHLB advances, carrying amount	96,749	74,675
Other borrowings, carrying amount	11,248	11,606
Interest payable, carrying amount	289	236
Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value
Cash and cash equivalents, fair value	32,884	32,778
Liabilities, fair value
Deposits, fair value	559,219	606,066
Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value
Loans held for sale, fair value	8,590	5,235
FHLB stock, fair value	14,391	14,391
Interest receivable, fair value	3,533	3,846
Liabilities, fair value
FHLB advances, fair value	95,096	75,688
Other borrowings, fair value	9,687	12,648
Interest payable, fair value	289	236
Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value
Loans, fair value	974,529	993,539
Liabilities, fair value
Deposits, fair value	$ 556,070	$ 589,759