Loans, Leases and Allowance for Credit Losses Loans, Leases and Allowance for Credit Losses - Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) SecurityLoan	Mar. 31, 2019 USD ($) SecurityLoan	Dec. 31, 2019 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	$ 161,387
Financing Receivable, Troubled Debt Restructuring, Commitment to Lend	200		$ 200
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 26,525	$ 27,100
Financing Receivable, Modifications, Number of Contracts | SecurityLoan	7	2
Other Collateral [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	$ 72,742
Real Estate Collateral [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	88,645
Commercial and industrial [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 20,427
Financing Receivable, Modifications, Number of Contracts | SecurityLoan	3
Commercial and Industrial Sector [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	$ 68,067
Commercial and Industrial Sector [Member] | Other Collateral [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	68,067
Commercial and Industrial Sector [Member] | Real Estate Collateral [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Small balance commercial [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	4,234
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 183
Financing Receivable, Modifications, Number of Contracts | SecurityLoan	1
Small balance commercial [Member] | Other Collateral [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	$ 4,234
Small balance commercial [Member] | Real Estate Collateral [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	28,977
Commercial Real Estate Owner Occupied [Member] | Other Collateral [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Commercial Real Estate Owner Occupied [Member] | Real Estate Collateral [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	28,977
Small Balance Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	3,224
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 1,423
Financing Receivable, Modifications, Number of Contracts | SecurityLoan	2
Small Balance Commercial Real Estate Owner Occupied [Member] | Other Collateral [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	$ 0
Small Balance Commercial Real Estate Owner Occupied [Member] | Real Estate Collateral [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	3,224
Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	50,661
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 4,492
Financing Receivable, Modifications, Number of Contracts | SecurityLoan	1
Commercial Real Estate Non Owner Occupied [Member] | Other Collateral [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	$ 0
Commercial Real Estate Non Owner Occupied [Member] | Real Estate Collateral [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	50,661
Residential Real Estate [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	5,783
Residential Real Estate [Member] | Other Collateral [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Residential Real Estate [Member] | Real Estate Collateral [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	5,783
Construction And Land Development [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Construction And Land Development [Member] | Other Collateral [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Construction And Land Development [Member] | Real Estate Collateral [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Warehouse lending [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Warehouse lending [Member] | Other Collateral [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Warehouse lending [Member] | Real Estate Collateral [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Municipal and nonprofit [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Municipal and nonprofit [Member] | Other Collateral [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Municipal and nonprofit [Member] | Real Estate Collateral [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	0
Consumer Portfolio Segment [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	441
Consumer Portfolio Segment [Member] | Other Collateral [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	441
Consumer Portfolio Segment [Member] | Real Estate Collateral [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and Leases Receivable, Collateral for Secured Borrowings	$ 0