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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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Loans (Components of Loans) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	$ 1,450,884	$ 1,451,990
Less: Unearned Income	(3,871)	(4,008)
Allowance for Loan Losses	(15,169)	(14,929)	(15,484)	(14,584)
Loans, Net	1,431,844	1,433,053
Commercial:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and Industrial Loans and Leases	388,249	380,079
Commercial Real Estate Loans	581,394	583,086
Agricultural Loans	212,735	216,774
Retail:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Home Equity Loans	86,155	86,234
Consumer Loans	45,952	48,613
Residential Mortgage Loans	$ 136,399	$ 137,204