Consolidated Condensed Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest income:
Interest and fees on loans	$ 205,220	$ 174,039	$ 578,264	$ 495,516
Interest on investment securities available-for-sale	25,575	23,655	76,867	72,082
Interest on investment securities held-to-maturity	131	197	460	592
Interest on loans held-for-sale	6,123	1,445	10,916	3,904
Interest on trading securities	8,262	6,793	24,033	22,564
Interest on other earning assets	2,834	843	11,757	3,354
Total interest income	248,145	206,972	702,297	598,012
Interest on deposits:
Savings	10,920	4,939	31,324	13,275
Time deposits	2,591	2,496	8,342	7,293
Other interest-bearing deposits	6,759	2,592	15,976	7,422
Interest on trading liabilities	3,298	3,331	11,282	11,152
Interest on short-term borrowings	4,998	1,254	9,293	3,585
Interest on term borrowings	9,762	7,165	25,854	21,752
Total interest expense	38,328	21,777	102,071	64,479
Net interest income	209,817	185,195	600,226	533,533
Provision/(provision credit) for loan losses	0	4,000	(3,000)	11,000
Net interest income after provision/(provision credit) for loan losses	209,817	181,195	603,226	522,533
Noninterest income:
Fixed income	55,758	71,748	161,546	216,638
Deposit transactions and cash management	28,011	27,221	80,434	81,049
Brokerage, management fees and commissions	11,937	10,828	35,872	31,908
Trust services and investment management	6,953	6,885	21,304	20,674
Bankcard income	6,170	6,260	17,230	18,077
Bank-owned life insurance	3,539	3,997	11,137	11,129
Debt securities gains/(losses), net	1	0	450	1,654
Equity securities gains/(losses), net	5	(200)	5	(181)
All other income and commissions	43	21,806	29,051	47,416
Total noninterest income	112,417	148,545	357,029	428,364
Adjusted gross income after provision/(provision credit) for loan losses	322,234	329,740	960,255	950,897
Noninterest expense:
Employee compensation, incentives, and benefits	137,798	145,103	411,818	425,624
Occupancy	13,619	12,722	38,759	38,062
Computer software	11,993	10,400	35,077	33,213
Operations services	10,805	10,518	33,204	30,939
Equipment rentals, depreciation, and maintenance	6,626	6,085	20,013	19,426
Professional fees	6,566	4,859	20,971	14,342
FDIC premium expense	6,062	5,721	17,728	15,490
Advertising and public relations	5,205	6,065	13,901	15,519
Communications and courier	4,328	3,883	12,245	10,672
Contract employment and outsourcing	2,762	2,443	8,975	7,365
Legal fees	2,052	4,750	10,831	15,520
Amortization of intangible assets	1,964	1,299	5,160	3,898
Repurchase and foreclosure provision/(provision credit)	(609)	(218)	(22,580)	(31,618)
All other expense	27,698	19,928	70,889	88,855
Total noninterest expense	236,869	233,558	676,991	687,307
Income/(loss) before income taxes	85,365	96,182	283,264	263,590
Provision/(benefit) for income taxes	13,596	28,547	57,903	82,802
Net income/(loss)	71,769	67,635	225,361	180,788
Net income attributable to noncontrolling interest	2,883	2,883	8,555	8,586
Net income/(loss) attributable to controlling interest	68,886	64,752	216,806	172,202
Preferred stock dividends	1,550	1,550	4,650	4,650
Net income/(loss) available to common shareholders	$ 67,336	$ 63,202	$ 212,156	$ 167,552
Basic earnings/(loss) per share (in dollars per share)	$ 0.29	$ 0.27	$ 0.91	$ 0.72
Diluted earnings/(loss) per share (in dollars per share)	$ 0.28	$ 0.27	$ 0.90	$ 0.71
Weighted average common shares (shares)	233,749	231,856	233,438	232,690
Diluted average common shares (shares)	236,340	234,092	236,372	234,775
Cash dividends declared per common share (in dollars per share)	$ 0.09	$ 0.07	$ 0.27	$ 0.21