Income Taxes (Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Allowance for credit losses	$ 39,561	$ 35,455
Deferred compensation	25,492	19,349
Covered assets	17,754	18,246
Stock-based compensation	9,760	10,735
Other real estate owned	7,610	7,546
Foreign net operating loss carryforward	6,616	2,521
Federal net operating loss carryforward	4,705	2,108
AMT credt carryforward	1,498	1,177
Foreign tax credit carryfoward	0	302
Nonaccrued interest	1,603	1,329
Mortgage banking recourse obligation	1,565	1,206
Discount on purchased loans	749	0
Net unrealized losses on securities included in other comprehensive income	11,476	6,242
Net unrealized losses on derivatives included in other comprehensive income	1,386	1,601
Other	3,361	3,523
Total gross deferred tax assets	133,136	111,340
Deferred tax liabilities:
Premises and equipment	33,423	35,902
Equipment leasing	15,089	0
Goodwill and intangible assets	8,198	3,501
Fair value adjustments on loans	6,086	9,444
Deferred loan fees and costs	6,045	4,927
Capitalized servicing rights	3,330	3,037
FHLB stock dividends	904	1,416
Discount on purchased loans	0	11,324
Other	5,874	5,625
Total gross deferred liabilities	78,949	75,176
Net deferred tax assets	$ 54,187	$ 36,164