Loans and Allowance - Information regarding troubled debt restructurings by class and new troubled debt restructuring (Details 7) (Loans Receivable, USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 Loan	Dec. 31, 2012 Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of troubled debt restructuring	36	29
Total Troubled Debt Restructured	$ 10,435	$ 11,552
Number of Loans	19	16
Pre-Modification Recorded Balance	2,844	4,527
Post-Modification Recorded Balance	3,249	4,664
Construction/Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of troubled debt restructuring	11	5
Total Troubled Debt Restructured	4,032	4,366
Number of Loans	8	4
Pre-Modification Recorded Balance	2,031	2,623
One-to-four family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of troubled debt restructuring	12	9
Total Troubled Debt Restructured	3,628	3,629
Number of Loans	7	3
Pre-Modification Recorded Balance	758	574
Multi-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of troubled debt restructuring	1	1
Total Troubled Debt Restructured	1,022	1,050
Number of Loans		1
Pre-Modification Recorded Balance		1,068
Nonresidential and agricultural land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of troubled debt restructuring	4	5
Total Troubled Debt Restructured	1,487	2,210
Number of Loans
Pre-Modification Recorded Balance
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of troubled debt restructuring	8	9
Total Troubled Debt Restructured	266	297
Number of Loans	4	8
Pre-Modification Recorded Balance	55	262
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of troubled debt restructuring
Total Troubled Debt Restructured
Number of Loans
Pre-Modification Recorded Balance