Loans and Allowance - Summary of Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended
Mar. 31, 2016 USD ($) loan	Mar. 31, 2015 USD ($) loan
Financing Receivable, Modifications [Line Items]
Pre-Modification Recorded Balance	$ 1,203	$ 2,465
Post-Modification Recorded Balance	$ 1,089	$ 3,208
Number of Loans \| loan	10	7
Commercial and industrial loans
Financing Receivable, Modifications [Line Items]
Pre-Modification Recorded Balance	$ 260	$ 2,362
Post-Modification Recorded Balance	$ 260	$ 1,361
Number of Loans \| loan	3	4
Agricultural production financing and other loans to farmers
Financing Receivable, Modifications [Line Items]
Pre-Modification Recorded Balance	$ 465
Post-Modification Recorded Balance	$ 331
Number of Loans \| loan	2
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	$ 352
Post-Modification Recorded Balance	$ 352	$ 1,743
Number of Loans \| loan	1	1
Real estate loans - Residential
Financing Receivable, Modifications [Line Items]
Pre-Modification Recorded Balance	$ 113	$ 24
Post-Modification Recorded Balance	$ 133	$ 24
Number of Loans \| loan	3	1
Individuals' loans for household and other personal expenditures
Financing Receivable, Modifications [Line Items]
Pre-Modification Recorded Balance	$ 13
Post-Modification Recorded Balance	$ 13
Number of Loans \| loan	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=49124121&loc=SL6953676-111524

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