Consolidated Statements of Financial Position - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Cash and cash equivalents:
Cash and cash due from banks	$ 230,219	$ 237,758
Interest-bearing deposits with the Federal Reserve Bank and other banks	389,022	236,644
Total cash and cash equivalents	619,241	474,402
Investment securities:
Available-for-sale, at fair value	1,767,478	1,234,964
Held-to-maturity, at amortized cost (fair value of $640,043 and $608,531, respectively)	645,605	623,427
Total investment securities	2,413,083	1,858,391
Loans held-for-sale, at fair value	65,371	81,830
Loans	13,667,372	12,990,779
Allowance for loan losses	(83,797)	(78,268)
Net loans	13,583,575	12,912,511
Premises and equipment	146,460	145,012
Loan servicing rights ($64,522 and $48,085 measured at fair value, respectively)	64,522	58,315
Goodwill	1,133,534	1,133,534
Other intangible assets	37,322	40,211
Interest receivable and other assets	718,297	650,973
Total assets	18,781,405	17,355,179
Deposits:
Noninterest-bearing	3,626,592	3,341,520
Interest-bearing	9,577,775	9,531,602
Total deposits	13,204,367	12,873,122
Interest payable and other liabilities	141,702	134,637
Securities sold under agreements to repurchase with customers	310,042	343,047
Short-term borrowings	2,050,000	825,000
Long-term borrowings	435,852	597,847
Total liabilities	16,141,963	14,773,653
Shareholders’ equity
Preferred stock, no par value: Authorized – 2,000,000 shares at 6/30/2017 and 12/31/2016, none issued	0	0
Common stock, $1.00 par value per share: Authorized — 135,000,000 shares at 6/30/2017 and 100,000,000 shares at 12/31/2016, Issued and outstanding — XX,XXX,XXX shares at 6/30/2017 and 70,599,133 shares at 12/31/2016	71,131	70,599
Additional paid-in capital	2,197,501	2,210,762
Retained earnings	404,939	340,201
Accumulated other comprehensive loss	(34,129)	(40,036)
Total shareholders’ equity	2,639,442	2,581,526
Total liabilities and shareholders’ equity	$ 18,781,405	$ 17,355,179