Income Taxes (Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Allowance for credit losses	$ 46,519	$ 39,561
Deferred compensation	28,125	25,492
Net unrealized losses on securities included in other comprehensive income	19,036	11,476
Covered assets	18,484	17,754
Stock-based compensation	9,704	9,760
Federal net operating loss carryforward	7,624	4,705
Other real estate owned	7,151	7,610
Loans - purchase accounting adjustments	5,055	749
Foreign net operating loss carryforward	3,476	6,616
Mortgage banking recourse obligation	2,025	1,565
Nonaccrued interest	1,884	1,603
AMT credt carryforward	1,872	1,498
Net unrealized losses on derivatives included in other comprehensive income	0	1,386
Other	2,408	3,361
Total gross deferred tax assets	153,363	133,136
Deferred tax liabilities:
Premises and equipment	31,053	33,423
Equipment leasing	28,440	15,089
Goodwill and intangible assets	10,085	8,198
Capitalized servicing rights	7,326	3,330
Deferred loan fees and costs	5,131	6,045
Fair value adjustments on loans	3,163	6,086
Net unrealized gains on derivatives included in other comprehensive income	2,732	0
FHLB stock dividends	346	904
Other	6,334	5,874
Total gross deferred liabilities	94,610	78,949
Net deferred tax assets	$ 58,753	$ 54,187