Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
ASSETS
Cash and due from banks (restricted cash of $55,649 and $37,408)	$ 296,967	$ 335,419
Interest bearing cash and temporary investments (restricted cash of $2,630 and $1,232)	605,841	287,218
Total cash and cash equivalents	902,808	622,637
Investment securities
Equity and other, at fair value	63,327	61,841
Available for sale, at fair value	2,894,778	2,977,108
Held to maturity, at amortized cost	3,478	3,606
Loans held for sale, at fair value	240,302	166,461
Loans and leases	20,405,997	20,422,666
Allowance for loan and lease losses	(144,872)	(144,871)
Net loans and leases	20,261,125	20,277,795
Restricted equity securities	47,466	40,268
Premises and equipment, net	217,595	227,423
Operating lease right-of-use assets	109,807	0
Goodwill	1,787,651	1,787,651
Other intangible assets, net	22,560	23,964
Residential mortgage servicing rights, at fair value	158,946	169,025
Other real estate owned	10,488	10,958
Bank owned life insurance	314,303	313,626
Other assets	320,991	257,418
Total assets	27,355,625	26,939,781
Deposits
Noninterest bearing	6,495,562	6,667,467
Interest bearing	14,748,332	14,470,019
Total deposits	21,243,894	21,137,486
Securities sold under agreements to repurchase	288,944	297,151
Term debt	932,420	751,788
Junior subordinated debentures, at fair value	294,121	300,870
Junior subordinated debentures, at amortized cost	88,667	88,724
Operating lease liabilities	118,520	0
Deferred tax liability, net	45,202	25,846
Other liabilities	231,531	281,474
Total liabilities	23,243,299	22,883,339
COMMITMENTS AND CONTINGENCIES (NOTE 6)
SHAREHOLDERS' EQUITY
Common stock, no par value, shares authorized: 400,000,000 in 2019 and 2018; issued and outstanding: 220,457,208 in 2019 and 220,255,039 in 2018	3,511,731	3,512,874
Retained earnings	629,877	602,482
Accumulated other comprehensive loss	(29,282)	(58,914)
Total shareholders' equity	4,112,326	4,056,442
Total liabilities and shareholders' equity	$ 27,355,625	$ 26,939,781