Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Assets
Cash and due from banks	$ 291.4	$ 241.5
Interest bearing deposits in banks	1,569.1	835.2
Federal funds sold	0.1	0.1
Total cash and cash equivalents	1,860.6	1,076.8
Investment securities:
Available-for-sale	3,453.5	2,960.0
Held-to-maturity, net (estimated fair values of $58.4 and $94.5 at September 30, 2020 and December 31, 2019, respectively)	55.0	92.3
Total investment securities	3,508.5	3,052.3
Mortgage loans held for sale, at fair value	102.0	100.9
Loans held for investment, net of deferred fees and costs	10,152.2	8,930.7
Allowance for credit losses	145.5	73.0
Net loans held for investment	10,006.7	8,857.7
Goodwill	621.6	621.6
Company-owned life insurance	294.9	293.8
Premises and equipment, net of accumulated depreciation	307.8	306.0
Core deposit intangibles, net of accumulated amortization	53.8	62.1
Accrued interest receivable	56.7	46.7
Mortgage servicing rights, net of accumulated amortization and impairment reserve	24.1	30.2
Other real estate owned (“OREO”)	5.7	8.5
Other assets	227.1	187.6
Total assets	17,069.5	14,644.2
Deposits:
Non-interest bearing	4,798.2	3,426.5
Interest bearing	9,084.2	8,237.0
Total deposits	13,882.4	11,663.5
Securities sold under repurchase agreements	820.3	697.6
Accounts payable and accrued expenses	148.5	129.6
Accrued interest payable	8.1	12.1
Deferred tax liability, net	29.8	26.7
Long-term debt	112.4	13.9
Allowance for credit losses on off-balance sheet credit exposures	3.4	0.0
Subordinated debentures held by subsidiary trusts	87.0	86.9
Total liabilities	15,091.9	12,630.3
Stockholders’ equity:
Nonvoting noncumulative preferred stock without par value; authorized 100,000 shares; no shares issued and outstanding as of September 30, 2020 or December 31, 2019	0.0	0.0
Common stock	976.8	1,049.3
Retained earnings	938.9	953.6
Accumulated other comprehensive income, net	61.9	11.0
Total stockholders’ equity	1,977.6	2,013.9
Total liabilities and stockholders’ equity	$ 17,069.5	$ 14,644.2
Preferred Stock, Shares Authorized	100,000	100,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0