Loans and Allowance for Loan and Lease Losses (Schedule of Recorded Investment in New and Non-ACI Loans on Non-Accrual Status) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	$ 112,390	$ 57,990
Non-ACI loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	3,775	5,318
1-4 single family residential | New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	328	2,007
1-4 single family residential | Non-ACI loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	931	594
Home equity loans and lines of credit | New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	0	0
Home equity loans and lines of credit | Non-ACI loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	2,844	4,724
Residential | New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	328	2,007
Residential | Non-ACI loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	3,775	5,318
Commercial real estate, Owner occupied | New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	18,809	8,274
Commercial real estate, Owner occupied | Non-ACI loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	0	0
Commercial real estate, Non-owner occupied | New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	1,145	0
Commercial real estate, Non-owner occupied | Non-ACI loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	0	0
Construction and land | New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	1,238	0
Construction and land | Non-ACI loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	0	0
Commercial and industrial | New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	70,671	37,782
Commercial and industrial | Non-ACI loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	0	0
Commercial Lending Subsidiaries | New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	19,037	9,920
Commercial Lending Subsidiaries | Non-ACI loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	0	0
Commercial | New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	110,900	55,976
Commercial | Non-ACI loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	0	0
Consumer | New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	1,162	7
Consumer | Non-ACI loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	0	0
Taxi medallion [Member] | Commercial and industrial | New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans on non-accrual status	$ 54,500	$ 2,600