Income Taxes (Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Allowance for credit losses	$ 40,342	$ 36,442
Deferred compensation	22,363	12,310
Net unrealized losses on securities included in other comprehensive income	15,430	7,465
Stock-based compensation	7,544	6,898
Federal net operating loss carryforward	5,348	3,063
Loans	4,540	4,943
Other real estate owned	2,429	4,019
AMT credit carryforward	1,395	1,199
Nonaccrued interest	1,357	983
Mortgage banking recourse obligation	632	722
Other	3,744	2,307
Total gross deferred tax assets	105,124	80,351
Deferred tax liabilities:
Equipment leasing	90,306	42,681
Premises and equipment	28,517	23,211
Capitalized servicing rights	16,663	8,916
Goodwill and intangible assets	12,921	7,619
Deferred loan fees and costs	3,446	3,531
Net unrealized gains on derivatives included in other comprehensive income	2,863	3,197
Fair value adjustments on loans	2,833	3,143
Other	5,295	3,433
Total gross deferred liabilities	162,844	95,731
Net deferred tax liabilities	$ (57,720)	$ (15,380)