Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deferred tax assets:
Allowance for loan and lease losses	$ 51,203	$ 77,908
Net operating loss and credit carry forwards	71,813	64,644
Compensation and employee benefit plans	25,023	46,433
Net losses on derivative instruments	3,767	8,624
Net unrealized loss on securities available for sale	9,548	9,898
Other	12,273	17,682
Gross deferred tax assets	173,627	225,189
Valuation allowance	(38,292)	(71,474)
Total deferred tax assets, net of valuation allowance	135,335	153,715
Deferred tax liabilities:
Equipment-financing leases	27,955	41,910
Deferred income on repurchase of debt	1,275	4,251
Intangible assets	6,164	9,952
Mortgage servicing assets	4,445	7,313
Other	2,866	5,898
Gross deferred tax liabilities	42,705	69,324
Deferred tax assets, net	$ 92,630	$ 84,391