Loans and Allowance - Summary of Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2015 USD ($) loan	Jun. 30, 2014 USD ($) loan	Jun. 30, 2015 USD ($) loan	Jun. 30, 2014 USD ($) loan
Financing Receivable, Modifications [Line Items]
Pre-Modification Recorded Balance	$ 1,943	$ 512	$ 4,408	$ 657
Post-Modification Recorded Balance	$ 1,944	$ 512	$ 5,152	$ 661
Number of Loans \| loan	4	5	11	9
Commercial and industrial loans
Financing Receivable, Modifications [Line Items]
Pre-Modification Recorded Balance	$ 1,386		$ 3,748
Post-Modification Recorded Balance	$ 536		$ 1,897
Number of Loans \| loan	1		5
Real estate loans - Construction
Financing Receivable, Modifications [Line Items]
Pre-Modification Recorded Balance			$ 79
Post-Modification Recorded Balance			$ 80
Number of Loans \| loan			1
Real estate loans - Commercial and farmland
Financing Receivable, Modifications [Line Items]
Pre-Modification Recorded Balance	$ 537	$ 259	$ 537	$ 259
Post-Modification Recorded Balance	$ 537	$ 259	$ 2,280	$ 259
Number of Loans \| loan	1	1	2	1
Real estate loans - Residential
Financing Receivable, Modifications [Line Items]
Pre-Modification Recorded Balance	$ 20	$ 242	$ 44	$ 372
Post-Modification Recorded Balance	$ 871	$ 242	$ 895	$ 376
Number of Loans \| loan	2	3	3	6
Individuals' loans for household and other personal expenditures
Financing Receivable, Modifications [Line Items]
Pre-Modification Recorded Balance		$ 11		$ 26
Post-Modification Recorded Balance		$ 11		$ 26
Number of Loans \| loan		1		2

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Number of financing receivables that have been modified by troubled debt restructurings.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 33

-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953676-111524

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