The useful life of the loan receivable.

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The period of time when the final, large payment is due on a real estate loan.

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The ratio used to analyze the amount of debt that can be supported by the cash flow generated from the property. The calculation is the net income generated by the property divided by the commercial mortgage payment.

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The amount of the mortgage loan as a percentage of the total appraised value of the real property. Loan-to-value is one of the key risk factors that lenders assess when qualifying borrowers for a mortgage.

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Specifies the time period covered by the loan receivable.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes Loans held-for-sale and loans and leases covered under loss sharing agreements.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The increase (decrease) during the reporting period of the sum of amounts due within one year (or one business cycle) from customers for the credit sale of goods and services; and from note holders for outstanding loans.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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The face amount of loans that will be sold to other entities.

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Amount, after allowance for bad debt, of loan receivables held-for-sale that are not part of a disposal group. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes loans held for sale. Excludes loans and leases covered under loss sharing agreements.

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Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Excludes amounts for loans and leases covered under loss sharing agreements.

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Loans and Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 1,836,251	$ 1,284,677
Loans Receivable Held-for-sale, Amount	1,175	968
loans and leases receivable gross excluding loans held for sale	1,835,076	1,283,709
Net deferred loan fees, premiums and discounts	(10,259)	(2,788)
Allowance for loan losses	16,753	14,576	$ 13,682	$ 13,249
Net loans	1,808,064	1,266,345
Loans held for sale	1,175	968
Increase (Decrease) in Accounts and Notes Receivable	541,700
Loans Receivable, Net	1,825,992	1,281,889
Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	49,366	39,232
Loans Receivable, Net	49,104	39,209
Farm loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	126,216	122,579
Loans Receivable, Net	126,108	122,474
1-4 Family residential properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	328,119	232,351
Loans Receivable, Net	326,415	231,571
Multifamily residential properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	83,478	45,765
Loans Receivable, Net	83,200	45,740
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	633,694	409,487
Loans Receivable, Net	$ 630,135	409,172
Debt coverage ratio	1.20x
Amortization period of loans	twenty years
Commercial real estate \| Minimum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan To Value Ratio	65.00%
Commercial real estate \| Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan To Value Ratio	80.00%
Loans secured by real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 1,220,873	849,414
Loans Receivable, Net	1,214,962	848,166
Agricultural loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	86,735	75,998
Loans Receivable, Net	86,685	75,886
Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	412,637	305,851
Loans Receivable, Net	$ 409,033	305,060
Loan To Value Ratio	80.00%
Amortization period of loans	seven years
Loans Receivable, Time Period	one year
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 38,404	42,097
Allowance for loan losses	693	642	386	377
Loans Receivable, Net	38,028	41,579
All other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	77,602	11,317
Loans Receivable, Net	77,284	11,198
Agricultural and Farm Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	213,000	198,600
Increase (Decrease) in Accounts and Notes Receivable	$ 14,400
Loan To Value Ratio	65.00%
Amortization period of loans	twenty five years
Loans Receivable, Time Period	one year
Other Grain Farming [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 171,300	161,495
Increase (Decrease) in Accounts and Notes Receivable	9,800
Motels and Hotels Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	103,843
Non-residential Buildings [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	134,019
Residential Buildings [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	139,584
Automobile Dealers [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	54,300
Commercial/Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	12,901	11,379	10,914	10,646
Agriculture/Agricultural Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	2,249	1,337	1,360	533
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 874	994	790	771
Loan To Value Ratio	80.00%
Amortization period of loans	twenty five years
Balloon period	five years
Unallocated [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 36	$ 224	$ 232	$ 922
First Clover Leaf [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net	$ 439,100