Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Excess of tax basis over carrying value of acquired loans	$ 158,931	$ 152,870
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts	46,875	37,091
Acquisition costs	10,176	11,257
Deferred Tax Assets, Operating Loss Carryforwards	9,051	10,525
Net unrealized losses on derivatives designated as cash flow hedges	12,609	13,836
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	8,339	7,797
Deferred Tax Assets, Other	19,077	13,374
Deferred Tax Assets, Gross	265,058	246,750
Deferred tax liabilities:
Net unrealized gains on investment securities available for sale	26,961	43,123
Deferred Tax Liabilities, Leasing Arrangements	118,388	71,024
Deferred Tax Liabilities, Other	14,132	15,388
Deferred Tax Liabilities, Gross	159,481	129,535
Deferred Tax Assets, Net	$ 105,577	$ 117,215