CONSOLIDATED CONDENSED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Interest income:
Interest and fees on loans	$ 331,938	$ 299,493
Interest on investment securities available-for-sale	31,843	32,847
Interest on investment securities held-to-maturity	131	131
Interest on loans held-for-sale	9,877	12,144
Interest on trading securities	13,548	14,408
Interest on other earning assets	13,278	4,332
Total interest income	400,615	363,355
Interest on deposits:
Savings	39,914	14,900
Time deposits	20,254	9,525
Other interest-bearing deposits	22,042	10,608
Interest on trading liabilities	2,816	5,124
Interest on short-term borrowings	6,744	10,042
Interest on term borrowings	14,337	11,983
Total interest expense	106,107	62,182
Net interest income	294,508	301,173
Provision/(provision credit) for loan losses	9,000	(1,000)
Net interest income after provision/(provision credit) for loan losses	285,508	302,173
Noninterest income:
Fixed income	53,749	45,506
Deposit transactions and cash management	31,621	35,984
Brokerage, management fees and commissions	12,633	13,483
Trust services and investment management	7,026	7,277
Bankcard income	6,015	6,445
Bank-owned life insurance (BOLI)	4,402	3,993
Debt securities gains/(losses), net	0	52
Equity securities gains/(losses), net (Note 3)	31	34
All other income and commissions (Note 8)	25,568	23,243
Total noninterest income	141,045	136,017
Adjusted gross income after provision/(provision credit) for loan losses	426,553	438,190
Noninterest expense:
Employee compensation, incentives, and benefits	177,925	171,254
Occupancy	20,693	20,451
Computer software	15,139	15,132
Professional fees	12,299	12,272
Operations services	11,488	15,561
Equipment rentals, depreciation, and maintenance	8,829	10,018
Advertising and public relations	7,242	3,599
Communications and courier	6,453	8,232
Amortization of intangible assets	6,216	6,474
FDIC premium expense	4,273	8,614
Contract employment and outsourcing	3,371	4,053
Legal fees	2,831	2,345
Repurchase and foreclosure provision/(provision credit)	(455)	(72)
All other expense (Note 8)	19,786	35,332
Total noninterest expense	296,090	313,265
Income/(loss) before income taxes	130,463	124,925
Provision/(benefit) for income taxes	27,058	29,931
Net income/(loss)	103,405	94,994
Net income attributable to noncontrolling interest	2,820	2,820
Net income/(loss) attributable to controlling interest	100,585	92,174
Preferred stock dividends	1,550	1,550
Net income/(loss) available to common shareholders	$ 99,035	$ 90,624
Basic earnings/(loss) per share (in dollars per share)	$ 0.31	$ 0.28
Diluted earnings/(loss) per share (in dollars per share)	$ 0.31	$ 0.27
Weighted average common shares (in shares)	317,435	326,489
Diluted average common shares (in shares)	319,581	330,344
Cash dividends declared per common share (in dollars per share)	$ 0.14	$ 0.12