Loans, Net Loans identified as impaired by class of loan (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2014	Dec. 31, 2013
Recorded Investment [Abstract]
With no related allowance recorded	$ 12,184	$ 12,427
With an allowance recorded	12,991	12,269
Total	25,175	24,696
Unpaid Principal Balance [Abstract]
With no related allowance recorded	13,153	13,500
With an allowance recorded	13,064	12,238
Total	26,217	25,738
Related Allowance [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	4,258	4,655
Total	4,258	4,655
Average Recorded Investment [Abstract]
With no related allowance recorded	12,121	13,209
With an allowance recorded	13,037	12,788
Total	25,158	25,997
Interest Income Recognized [Abstract]
With no related allowance recorded	36	123
With an allowance recorded	96	128
Total	132	251
Real Estate Loans Construction [Member]
Recorded Investment [Abstract]
With no related allowance recorded	1,915	1,924
With an allowance recorded	5,904	712
Unpaid Principal Balance [Abstract]
With no related allowance recorded	2,466	2,475
With an allowance recorded	5,904	712
Related Allowance [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	1,300	486
Average Recorded Investment [Abstract]
With no related allowance recorded	1,785	1,975
With an allowance recorded	5,927	878
Interest Income Recognized [Abstract]
With no related allowance recorded	2	13
With an allowance recorded	66	0
Real Estate Loans Secured by farmland [Member]
Recorded Investment [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	0	0
Unpaid Principal Balance [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	0	0
Related Allowance [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	0	0
Average Recorded Investment [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	0	0
Interest Income Recognized [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	0	0
Real Estate Loans Secured by 1 - 4 family residential [Member]
Recorded Investment [Abstract]
With no related allowance recorded	3,323	3,930
With an allowance recorded	5,467	6,481
Unpaid Principal Balance [Abstract]
With no related allowance recorded	3,741	4,452
With an allowance recorded	5,519	6,428
Related Allowance [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	2,401	3,045
Average Recorded Investment [Abstract]
With no related allowance recorded	3,355	4,415
With an allowance recorded	5,478	6,632
Interest Income Recognized [Abstract]
With no related allowance recorded	4	6
With an allowance recorded	11	47
Other real estate loans [Member]
Recorded Investment [Abstract]
With no related allowance recorded	4,862	4,458
With an allowance recorded	1,294	4,684
Unpaid Principal Balance [Abstract]
With no related allowance recorded	4,862	4,458
With an allowance recorded	1,294	4,684
Related Allowance [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	305	812
Average Recorded Investment [Abstract]
With no related allowance recorded	4,881	4,552
With an allowance recorded	1,299	4,840
Interest Income Recognized [Abstract]
With no related allowance recorded	26	104
With an allowance recorded	17	71
Commercial loans [Member]
Recorded Investment [Abstract]
With no related allowance recorded	2,084	2,115
With an allowance recorded	289	355
Unpaid Principal Balance [Abstract]
With no related allowance recorded	2,084	2,115
With an allowance recorded	310	377
Related Allowance [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	215	275
Average Recorded Investment [Abstract]
With no related allowance recorded	2,100	2,267
With an allowance recorded	296	399
Interest Income Recognized [Abstract]
With no related allowance recorded	4	0
With an allowance recorded	2	10
Consumer loans [Member]
Recorded Investment [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	37	37
Unpaid Principal Balance [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	37	37
Related Allowance [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	37	37
Average Recorded Investment [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	37	39
Interest Income Recognized [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	$ 0	$ 0

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524

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-Publisher FASB

-Name Accounting Standards Codification

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-Section 50

-Paragraph 17

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524

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