Loans and Allowance - Summary of Troubled Debt Restructurings (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015 loan	Mar. 31, 2014 loan
Financing Receivable, Modifications [Line Items]
Pre-Modification Recorded Balance	$ 2,465	$ 146
Post-Modification Recorded Balance	3,208	149
Number of Loans	7	4
Commercial and industrial loans
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Pre Modification Recorded Investment During Period	2,362
Financing Receivable Modifications Post Modification Recorded Investment During Period	1,361
Financing Receivable Modifications Number Of Contracts During Period	4
Real estate loans - Construction
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Pre Modification Recorded Investment During Period	79
Financing Receivable Modifications Post Modification Recorded Investment During Period	80
Financing Receivable Modifications Number Of Contracts During Period	1
Real estate loans - Commercial and farmland
Financing Receivable, Modifications [Line Items]
Pre-Modification Recorded Balance
Post-Modification Recorded Balance	1,743
Number of Loans	1
Real estate loans - Residential
Financing Receivable, Modifications [Line Items]
Pre-Modification Recorded Balance	24	131
Post-Modification Recorded Balance	24	134
Number of Loans	1	3
Individuals' loans for household and other personal expenditures
Financing Receivable, Modifications [Line Items]
Pre-Modification Recorded Balance		15
Post-Modification Recorded Balance		$ 15
Number of Loans		1

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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=35738203&loc=SL6953676-111524

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