Loans (Loan Maturities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan maturities, Within 1 Year	$ 99,260
Loan maturities, After 1 but within 5 Years	160,496
Loan maturities, After 5 Years	771,253
Loans due after one year with: Variable rates	110,169
Loans due after one year with: Fixed rates	821,580
Loans due after one year	931,749
Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan maturities, Within 1 Year	33,396
Loan maturities, After 1 but within 5 Years	38,720
Loan maturities, After 5 Years	16,474
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan maturities, Within 1 Year	24,264
Loan maturities, After 1 but within 5 Years	74,774
Loan maturities, After 5 Years	375,881
Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan maturities, Within 1 Year	28,360
Loan maturities, After 1 but within 5 Years	16,065
Loan maturities, After 5 Years	52,047
Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan maturities, Within 1 Year	9,058
Loan maturities, After 1 but within 5 Years	16,747
Loan maturities, After 5 Years	314,260
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan maturities, Within 1 Year	3,727
Loan maturities, After 1 but within 5 Years	13,420
Loan maturities, After 5 Years	2,309
Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan maturities, Within 1 Year	455
Loan maturities, After 1 but within 5 Years	770
Loan maturities, After 5 Years	$ 10,282