Fair Value (Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	$ 14,836,000	$ 10,958,000
Loans Held-for-sale	14,836,000	10,958,000
Unrealized gain (loss) on loans held for sale	(422,000)	133,000	$ 0
Financial Assets:
AFS securities	779,867,000	750,338,000
Obligations of U.S. government sponsored enterprises [Member]
Financial Assets:
AFS securities		5,040,000
Obligations of states and political subdivisions [Member]
Financial Assets:
AFS securities	9,001,000	17,694,000
Mortgage-backed securities issued or guaranteed by U.S. government sponsored enterprises [Member]
Financial Assets:
AFS securities	480,622,000	419,046,000
Collateralized mortgage obligations issued or guaranteed by U.S. government sponsored enterprises [Member]
Financial Assets:
AFS securities	283,890,000	306,857,000
Equity Securities [Member]
Financial Assets:
AFS securities	741,000	705,000
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale	14,836,000	10,958,000
Financial Liabilities:
Junior subordinated debt interest rate swaps	8,372,000	9,229,000
Fair Value, Measurements, Recurring [Member] | Obligations of states and political subdivisions [Member]
Financial Assets:
AFS securities	9,001,000	5,040,000
Fair Value, Measurements, Recurring [Member] | Mortgage-backed securities issued or guaranteed by U.S. government sponsored enterprises [Member]
Financial Assets:
AFS securities	480,622,000	17,694,000
Fair Value, Measurements, Recurring [Member] | Collateralized mortgage obligations issued or guaranteed by U.S. government sponsored enterprises [Member]
Financial Assets:
AFS securities	283,890,000	419,046,000
Fair Value, Measurements, Recurring [Member] | Corporate Bond Securities [Member]
Financial Assets:
AFS securities	5,613,000	306,857,000
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member]
Financial Assets:
AFS securities	741,000	996,000
Readily Available Market Prices (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	0	0
Financial Assets:
AFS securities	0	0
Readily Available Market Prices (Level 1) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale	0	0
Readily Available Market Prices (Level 1) [Member] | Fair Value, Measurements, Recurring [Member] | Corporate Bond Securities [Member]
Financial Assets:
AFS securities	0	0
Readily Available Market Prices (Level 1) [Member] | Fair Value, Measurements, Recurring [Member] | Equity Securities [Member]
Financial Assets:
AFS securities	0	0
Observable Market Data (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	14,836,000	10,958,000
Financial Assets:
AFS securities	779,867,000	750,338,000
Observable Market Data (Level 2) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale	14,836,000	10,958,000
Financial Liabilities:
Junior subordinated debt interest rate swaps	8,372,000	9,229,000
Observable Market Data (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of states and political subdivisions [Member]
Financial Assets:
AFS securities	9,001,000	5,040,000
Observable Market Data (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Mortgage-backed securities issued or guaranteed by U.S. government sponsored enterprises [Member]
Financial Assets:
AFS securities	480,622,000	17,694,000
Observable Market Data (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Collateralized mortgage obligations issued or guaranteed by U.S. government sponsored enterprises [Member]
Financial Assets:
AFS securities	283,890,000	419,046,000
Observable Market Data (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Corporate Bond Securities [Member]
Financial Assets:
AFS securities	5,613,000	306,857,000
Observable Market Data (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Equity Securities [Member]
Financial Assets:
AFS securities	741,000	996,000
Company Determined Fair Value (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	0	0
Financial Assets:
AFS securities	0	0
Company Determined Fair Value (Level 3) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale	0	0
Company Determined Fair Value (Level 3) [Member] | Fair Value, Measurements, Recurring [Member] | Corporate Bond Securities [Member]
Financial Assets:
AFS securities	0	0
Company Determined Fair Value (Level 3) [Member] | Fair Value, Measurements, Recurring [Member] | Equity Securities [Member]
Financial Assets:
AFS securities	0	0
Interest Rate Swap [Member]
Financial Assets:
Customer interest rate swaps	1,945,000	3,166,000
Financial Liabilities:
Junior subordinated debt interest rate swaps	8,372,000	9,229,000
Customer interest rate swaps	1,945,000	3,166,000
Interest Rate Swap [Member] | Fair Value, Measurements, Recurring [Member]
Financial Assets:
Customer interest rate swaps	1,945,000
Financial Liabilities:
Customer interest rate swaps	1,945,000	3,166,000
Interest Rate Swap [Member] | Readily Available Market Prices (Level 1) [Member]
Financial Assets:
Customer interest rate swaps	0	0
Financial Liabilities:
Junior subordinated debt interest rate swaps	0	0
Customer interest rate swaps	0	0
Interest Rate Swap [Member] | Observable Market Data (Level 2) [Member]
Financial Assets:
Customer interest rate swaps	1,945,000	3,166,000
Financial Liabilities:
Junior subordinated debt interest rate swaps	8,372,000	9,229,000
Customer interest rate swaps	1,945,000	3,166,000
Interest Rate Swap [Member] | Observable Market Data (Level 2) [Member] | Fair Value, Measurements, Recurring [Member]
Financial Assets:
Customer interest rate swaps	1,945,000
Financial Liabilities:
Customer interest rate swaps	1,945,000	3,166,000
Interest Rate Swap [Member] | Company Determined Fair Value (Level 3) [Member]
Financial Assets:
Customer interest rate swaps	0	0
Financial Liabilities:
Junior subordinated debt interest rate swaps	0	0
Customer interest rate swaps	0	0
Interest Rate Lock Commitments [Member]
Financial Assets:
Customer interest rate swaps	202,000	229,000
Financial Liabilities:
Customer interest rate swaps	15,000	90,000
Interest Rate Lock Commitments [Member] | Fair Value, Measurements, Recurring [Member]
Financial Assets:
Customer interest rate swaps	202,000	3,166,000
Financial Liabilities:
Customer interest rate swaps	15,000	90,000
Interest Rate Lock Commitments [Member] | Readily Available Market Prices (Level 1) [Member]
Financial Assets:
Customer interest rate swaps	0	0
Financial Liabilities:
Customer interest rate swaps	0	0
Interest Rate Lock Commitments [Member] | Observable Market Data (Level 2) [Member]
Financial Assets:
Customer interest rate swaps	202,000	229,000
Financial Liabilities:
Customer interest rate swaps	15,000	90,000
Interest Rate Lock Commitments [Member] | Observable Market Data (Level 2) [Member] | Fair Value, Measurements, Recurring [Member]
Financial Assets:
Customer interest rate swaps	202,000	3,166,000
Financial Liabilities:
Customer interest rate swaps	15,000	90,000
Interest Rate Lock Commitments [Member] | Company Determined Fair Value (Level 3) [Member]
Financial Assets:
Customer interest rate swaps	0	0
Financial Liabilities:
Customer interest rate swaps	0	0
Interest Rate Lock Commitments [Member] | Company Determined Fair Value (Level 3) [Member] | Fair Value, Measurements, Recurring [Member]
Financial Liabilities:
Customer interest rate swaps	0	0
Forward Contracts [Member]
Financial Assets:
Customer interest rate swaps	587,000
Financial Liabilities:
Customer interest rate swaps	309,000
Forward Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Financial Assets:
Customer interest rate swaps	587,000	229,000
Financial Liabilities:
Customer interest rate swaps	309,000
Forward Contracts [Member] | Readily Available Market Prices (Level 1) [Member]
Financial Assets:
Customer interest rate swaps	0
Financial Liabilities:
Customer interest rate swaps	0
Forward Contracts [Member] | Observable Market Data (Level 2) [Member]
Financial Assets:
Customer interest rate swaps	587,000
Financial Liabilities:
Customer interest rate swaps	309,000
Forward Contracts [Member] | Observable Market Data (Level 2) [Member] | Fair Value, Measurements, Recurring [Member]
Financial Assets:
Customer interest rate swaps	587,000	229,000
Financial Liabilities:
Customer interest rate swaps	309,000
Forward Contracts [Member] | Company Determined Fair Value (Level 3) [Member]
Financial Assets:
Customer interest rate swaps	0
Financial Liabilities:
Customer interest rate swaps	0
Forward-Starting Interest Rate Swap [Member]
Financial Liabilities:
Junior subordinated debt interest rate swaps	389,000	576,000
Forward-Starting Interest Rate Swap [Member] | Fair Value, Measurements, Recurring [Member]
Financial Liabilities:
Junior subordinated debt interest rate swaps	389,000	576,000
Forward-Starting Interest Rate Swap [Member] | Readily Available Market Prices (Level 1) [Member]
Financial Liabilities:
Junior subordinated debt interest rate swaps	0	0
Forward-Starting Interest Rate Swap [Member] | Observable Market Data (Level 2) [Member]
Financial Liabilities:
Junior subordinated debt interest rate swaps	389,000	576,000
Forward-Starting Interest Rate Swap [Member] | Observable Market Data (Level 2) [Member] | Fair Value, Measurements, Recurring [Member]
Financial Liabilities:
Junior subordinated debt interest rate swaps	389,000	576,000
Forward-Starting Interest Rate Swap [Member] | Company Determined Fair Value (Level 3) [Member]
Financial Liabilities:
Junior subordinated debt interest rate swaps	$ 0	0
Other Assets [Member] | Interest Rate Swap [Member] | Fair Value, Measurements, Recurring [Member]
Financial Assets:
Customer interest rate swaps		705,000
Other Assets [Member] | Interest Rate Swap [Member] | Observable Market Data (Level 2) [Member] | Fair Value, Measurements, Recurring [Member]
Financial Assets:
Customer interest rate swaps		$ 705,000