CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating Activities
Net income/(loss)	$ 94,994	$ 58,388
Adjustments to reconcile net income/(loss) to net cash provided/(used) by operating activities:
Provision/(provision credit) for loan losses	(1,000)	(1,000)
Provision/(benefit) for deferred income taxes	20,309	6,920
Depreciation and amortization of premises and equipment	11,978	8,151
Amortization of intangible assets	6,474	1,232
Net other amortization and accretion	(1,613)	6,207
Net (increase)/decrease in derivatives	(14,549)	(16,864)
Fair value adjustment on interest-only strips	(1,592)	0
Repurchase and foreclosure provision/(provision credit)	0	(238)
(Gains)/losses and write-downs on OREO, net	216	156
Litigation and regulatory matters	671	(294)
Stock-based compensation expense	5,906	5,029
Equity securities (gains)/losses, net	(34)	0
Debt securities (gains)/losses, net	(52)	(44)
Net (gains)/losses on sale/disposal of fixed assets	(3,202)	36
Loans held-for-sale:
Purchases and originations	(574,735)	(47,445)
Gross proceeds from settlements and sales	152,209	54,046
(Gain)/loss due to fair value adjustments and other	3,651	(809)
Net (increase)/decrease in:
Trading securities	(9,843)	(270,495)
Fixed income receivables	(25,343)	(110,904)
Interest receivable	(2,990)	1,055
Other assets	44,468	16,592
Net increase/(decrease) in:
Trading liabilities	188,847	286,342
Fixed income payables	(42,829)	114
Interest payable	10,030	7,360
Other liabilities	(66,349)	(75,014)
Total adjustments	(299,372)	(129,867)
Net cash provided/(used) by operating activities	(204,378)	(71,479)
Available-for-sale securities:
Sales	13,104	44
Maturities	152,800	135,046
Purchases	(159,951)	(135,676)
Premises and equipment:
Sales	2,619	18
Purchases	(18,020)	(9,318)
Proceeds from sales of OREO	10,527	2,135
Proceeds from BOLI	494	281
Net (increase)/decrease in:
Loans	418,174	499,796
Interests retained from securitizations classified as trading securities	241	256
Interest-bearing cash	876,249	(1,046,563)
Cash paid related to divestitures	(27,599)	0
Net cash provided/(used) by investing activities	1,268,638	(553,981)
Common stock:
Stock options exercised	4,327	2,045
Cash dividends paid	(21,353)	(16,465)
Repurchase of shares	(2,184)	(2,016)
Equity acquisition adjustment	(18)	0
Cash dividends paid - preferred stock - noncontrolling interest	(2,883)	(2,852)
Cash dividends paid - Series A preferred stock	(1,550)	(1,550)
Term borrowings:
Payments/maturities	(2,625)	(3,306)
Increases in restricted and secured term borrowings	159	0
Net increase/(decrease) in:
Deposits	228,478	807,641
Short-term borrowings	(1,285,626)	40,176
Net cash provided/(used) by financing activities	(1,083,275)	823,673
Net increase/(decrease) in cash and cash equivalents	(19,015)	198,213
Cash and cash equivalents at beginning of period	1,452,046	1,037,794
Cash and cash equivalents at end of period	1,433,031	1,236,007
Supplemental Disclosures
Total interest paid	51,418	21,478
Total taxes paid	4,066	951
Total taxes refunded	90	8,166
Transfer from loans to OREO	3,076	1,198
Transfer from loans HFS to trading securities	$ 333,483	$ 0