Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
ASSETS
Cash and due from banks (restricted cash of $30,120 and $27,939)	$ 304,681	$ 330,856
Interest bearing cash and temporary investments	264,508	303,424
Total cash and cash equivalents	569,189	634,280
Investment securities
Equity and other, at fair value	63,295	12,255
Available for sale, at fair value	2,947,414	3,065,769
Held to maturity, at amortized cost	3,667	3,803
Loans held for sale, at fair value	299,739	259,518
Loans and leases	19,314,589	19,080,184
Allowance for loan and lease losses	(141,933)	(140,608)
Net loans and leases	19,172,656	18,939,576
Restricted equity securities	43,501	43,508
Premises and equipment, net	259,354	269,182
Goodwill	1,787,651	1,787,651
Other intangible assets, net	28,589	30,130
Residential mortgage servicing rights, at fair value	164,760	153,151
Other real estate owned	13,055	11,734
Bank owned life insurance	307,745	306,864
Other assets	215,028	224,018
Total assets	25,875,643	25,741,439
Deposits
Noninterest bearing	6,699,399	6,505,628
Interest bearing	13,407,457	13,442,672
Total deposits	20,106,856	19,948,300
Securities sold under agreements to repurchase	291,984	294,299
Term debt	801,868	802,357
Junior subordinated debentures, at fair value	278,410	277,155
Junior subordinated debentures, at amortized cost	88,895	100,609
Deferred tax liability, net	39,277	37,503
Other liabilities	254,471	266,430
Total liabilities	21,861,761	21,726,653
COMMITMENTS AND CONTINGENCIES (NOTE 8)
SHAREHOLDERS' EQUITY
Common stock, no par value, shares authorized: 400,000,000 in 2018 and 2017; issued and outstanding: 220,460,836 in 2018 and 220,148,824 in 2017	3,515,506	3,517,258
Retained earnings	546,330	522,520
Accumulated other comprehensive loss	(47,954)	(24,992)
Total shareholders' equity	4,013,882	4,014,786
Total liabilities and shareholders' equity	$ 25,875,643	$ 25,741,439