Loans, Troubled Debt Restructuring (Details) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2015 USD ($) contract	Jun. 30, 2015 USD ($) contract	Dec. 31, 2014 USD ($) contract
Summary of information for TDR loans [Abstract]
Number of contracts | contract		53	52
Recorded investment	$ 10,374	$ 10,374	$ 16,482
Financing Receivable Troubled Debt Restructuring Commitments Outstanding	$ 658	$ 658	501
Summary of troubled debt restructuring loans were modified [Abstract]
Number of Contracts | contract	8	18
Pre-modification recorded investment	$ 471	$ 1,828
Post-modification recorded investment	355	1,553
Commitments to lend additional borrowings			500
TDR loans default payment		$ 280	$ 0
Agricultural [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract		8	9
Recorded investment	1,524	$ 1,524	$ 1,942
Financing Receivable Troubled Debt Restructuring Commitments Outstanding	$ 471	$ 471	$ 272
Summary of troubled debt restructuring loans were modified [Abstract]
Number of Contracts | contract	2	5
Pre-modification recorded investment	$ 234	$ 394
Post-modification recorded investment	118	$ 278
Commercial and Financial [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract		9	13
Recorded investment	1,646	$ 1,646	$ 2,202
Financing Receivable Troubled Debt Restructuring Commitments Outstanding	$ 158	$ 158	$ 53
Summary of troubled debt restructuring loans were modified [Abstract]
Number of Contracts | contract	0	1
Pre-modification recorded investment	$ 0	$ 191
Post-modification recorded investment	0	$ 177
Real Estate: Construction, 1 to 4 family residential [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract		3	3
Recorded investment	532	$ 532	$ 431
Financing Receivable Troubled Debt Restructuring Commitments Outstanding	$ 29	$ 29	$ 111
Summary of troubled debt restructuring loans were modified [Abstract]
Number of Contracts | contract	0	0
Pre-modification recorded investment	$ 0	$ 0
Post-modification recorded investment	0	0
TDR loans default payment		$ 170
Real Estate: Construction, land development and commercial [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract		1	1
Recorded investment	124	$ 124	$ 127
Financing Receivable Troubled Debt Restructuring Commitments Outstanding	$ 0	$ 0	$ 0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of Contracts | contract	0	0
Pre-modification recorded investment	$ 0	$ 0
Post-modification recorded investment	0	$ 0
Real Estate: Mortgage, farmland [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract		5	4
Recorded investment	2,314	$ 2,314	$ 2,220
Financing Receivable Troubled Debt Restructuring Commitments Outstanding	$ 0	$ 0	$ 0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of Contracts | contract	0	3
Pre-modification recorded investment	$ 0	$ 644
Post-modification recorded investment	0	$ 531
Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract		14	11
Recorded investment	1,612	$ 1,612	$ 1,467
Financing Receivable Troubled Debt Restructuring Commitments Outstanding	$ 0	$ 0	$ 0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of Contracts | contract	3	4
Pre-modification recorded investment	$ 107	$ 264
Post-modification recorded investment	107	$ 264
Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract		2	1
Recorded investment	40	$ 40	$ 225
Financing Receivable Troubled Debt Restructuring Commitments Outstanding	$ 0	$ 0	$ 65
Summary of troubled debt restructuring loans were modified [Abstract]
Number of Contracts | contract	1	2
Pre-modification recorded investment	$ 15	$ 42
Post-modification recorded investment	15	$ 42
Real Estate: Mortgage, multi-family [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract		1	2
Recorded investment	71	$ 71	$ 5,470
Financing Receivable Troubled Debt Restructuring Commitments Outstanding	$ 0	$ 0	$ 0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of Contracts | contract	1	1
Pre-modification recorded investment	$ 71	$ 71
Post-modification recorded investment	71	$ 71
Real Estate: Mortgage, commercial [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract		10	8
Recorded investment	2,511	$ 2,511	$ 2,398
Financing Receivable Troubled Debt Restructuring Commitments Outstanding	$ 0	$ 0	$ 0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of Contracts | contract	1	2
Pre-modification recorded investment	$ 44	$ 222
Post-modification recorded investment	44	190
TDR loans default payment		$ 110
Loans to individuals [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract		0	0
Recorded investment	0	$ 0	$ 0
Financing Receivable Troubled Debt Restructuring Commitments Outstanding	$ 0	$ 0	$ 0