Loans and Allowance - Corporation's loan portfolio aging analysis (Details 4) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivables, gross	$ 298,402	$ 309,082
Loans Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-59 Days Past Due	1,679	1,822
60-89 Days Past Due	800	768
Greater than 90 Days	3,759	2,970
Total Past Due	6,238	5,560
Current	308,828	306,121
Purchased Credit Impaired Loans	2,989	3,103
Total loans receivables, gross	318,055	314,784
Loans Receivable | Construction / Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-59 Days Past Due	7	63
60-89 Days Past Due	85
Greater than 90 Days	49	556
Total Past Due	141	619
Current	26,014	25,586
Purchased Credit Impaired Loans	338	301
Total loans receivables, gross	26,493	26,506
Loans Receivable | 1-4 family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-59 Days Past Due	772	1,347
60-89 Days Past Due	602	768
Greater than 90 Days	2,303	1,408
Total Past Due	3,677	3,523
Current	139,628	132,459
Purchased Credit Impaired Loans	1,440	1,420
Total loans receivables, gross	144,745	137,402
Loans Receivable | Multi-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-59 Days Past Due
60-89 Days Past Due
Greater than 90 Days
Total Past Due
Current	17,343	19,537
Purchased Credit Impaired Loans	485	451
Total loans receivables, gross	17,828	19,988
Loans Receivable | Nonresidential and agricultural land
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-59 Days Past Due	763	276
60-89 Days Past Due	71
Greater than 90 Days	909	753
Total Past Due	1,743	1,029
Current	101,198	104,541
Purchased Credit Impaired Loans	699	863
Total loans receivables, gross	103,640	106,433
Loans Receivable | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-59 Days Past Due	85	100
60-89 Days Past Due	32
Greater than 90 Days	470	251
Total Past Due	587	351
Current	20,262	19,160
Purchased Credit Impaired Loans	4	38
Total loans receivables, gross	20,853	19,549
Loans Receivable | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-59 Days Past Due	52	36
60-89 Days Past Due	10
Greater than 90 Days	28	2
Total Past Due	90	38
Current	4,383	4,838
Purchased Credit Impaired Loans	23	30
Total loans receivables, gross	$ 4,496	$ 4,906