Short-Term Borrowings and Long-Term Debt (Borrowings) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Short-term borrowings:
Retail customer repurchase agreements	$ 9,076,000	$ 6,917,000	$ 8,675,000
Total short-term borrowings	9,076,000us-gaap_ShortTermBorrowings	6,917,000us-gaap_ShortTermBorrowings
Long-term debt:
Federal Home Loan Bank advances	68,234,000	73,283,000
Long-term notes payable	5,338,000us-gaap_LongTermNotesPayable	5,263,000us-gaap_LongTermNotesPayable
Junior subordinated debt	56,702,000	56,702,000
Total long-term debt	$ 130,274,000us-gaap_LongTermDebt	$ 135,248,000us-gaap_LongTermDebt
FHLB advance [Member]
Long-term debt:
Long-term debt, weighted average interest rate at December 31	1.68%	1.80%
Long term notes payable [Member]
Long-term debt:
Long-term debt, weighted average interest rate at December 31	1.43%	0.00%
Junior subordinated debt [Member]
Long-term debt:
Long-term debt, weighted average interest rate at December 31	1.78%	1.77%
Retail customer repurchase agreements [Member]
Short-term borrowings:
Short-term debt, weighted average interest rate at December 31	0.21%	0.21%	0.19%

Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.

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