Loans (Loan Maturities) (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan maturities, Within 1 Year	$ 392,524
Loan maturities, After 1 but within 5 Years	282,889
Loan maturities, After 5 Years	1,238,086
Loans due after one year with: Variable rates	564,490
Loans due after one year with: Fixed rates	956,485
Loans due after one year	1,520,975
Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan maturities, Within 1 Year	101,625
Loan maturities, After 1 but within 5 Years	63,132
Loan maturities, After 5 Years	42,381
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan maturities, Within 1 Year	88,846
Loan maturities, After 1 but within 5 Years	119,993
Loan maturities, After 5 Years	696,585
Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan maturities, Within 1 Year	43,713
Loan maturities, After 1 but within 5 Years	28,611
Loan maturities, After 5 Years	49,311
Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan maturities, Within 1 Year	25,830
Loan maturities, After 1 but within 5 Years	39,072
Loan maturities, After 5 Years	437,576
Mortgage Warehouse Lines [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan maturities, Within 1 Year	126,237
Loan maturities, After 1 but within 5 Years	0
Loan maturities, After 5 Years	0
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan maturities, Within 1 Year	5,247
Loan maturities, After 1 but within 5 Years	25,849
Loan maturities, After 5 Years	5,374
Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan maturities, Within 1 Year	1,026
Loan maturities, After 1 but within 5 Years	6,232
Loan maturities, After 5 Years	$ 6,859