Loans & Leases (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans & Leases	$ 1,715,657,000	$ 1,391,759,000
Less: Unearned Income	3,413,000	3,523,000
Total Loans & Leases	1,712,244,000	1,388,236,000
Less: Allowance for Credit Losses	35,401,000	34,274,000
Loans & Leases, Net	1,676,843,000	1,353,962,000
Collateral on borrowing lines	516,600,000
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans & Leases	495,316,000	411,037,000
Total Loans & Leases	491,903,000	407,514,000
Agricultural Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans & Leases	357,207,000	328,264,000
Total Loans & Leases	357,207,000	328,264,000
Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans & Leases	96,519,000	41,092,000
Total Loans & Leases	96,519,000	41,092,000
Residential 1st Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans & Leases	171,880,000	151,292,000
Total Loans & Leases	171,880,000	151,292,000
Home Equity Lines and Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans & Leases	33,017,000	35,477,000
Total Loans & Leases	33,017,000	35,477,000
Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans & Leases	281,963,000	256,414,000
Total Loans & Leases	281,963,000	256,414,000
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans & Leases	230,819,000	150,398,000
Total Loans & Leases	230,819,000	150,398,000
Consumer & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans & Leases	4,719,000	5,052,000
Total Loans & Leases	4,719,000	5,052,000
Unallocated [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans & Leases	0	0
Leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans & Leases	44,217,000	12,733,000
Total Loans & Leases	44,217,000	12,733,000
Federal Home Loan Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral on borrowing lines	516,600,000
Maximum borrowing capacity	256,600,000
Federal Reserve Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral on borrowing lines	537,500,000
Maximum borrowing capacity	$ 340,500,000

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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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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Reflects the aggregate value of loans, trade receivables, securities and financial instruments that serve as collateral for obligations arising from a transfer of financial assets recorded as a secured borrowing.

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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts 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 before allowance and after 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.

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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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