Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net (loss) income	$ (1,799,021)	$ 185,843
Adjustments to reconcile net income to net cash used in operating activities:
Goodwill impairment	1,784,936	0
Amortization of investment premiums, net	12,822	12,338
(Gain) loss on sale of investment securities, net	(190)	7,186
Provision for credit losses	205,170	33,036
Change in cash surrender value of bank owned life insurance	(4,319)	(4,267)
Depreciation, amortization and accretion	20,015	22,600
Gain on sale of premises and equipment	(3)	(687)
Gain on store divestiture	0	(1,225)
Increase In Mortgage Servicing Rights Carried At Fair Value	(23,470)	(9,379)
Change in fair value of residential mortgage servicing rights carried at fair value	42,124	38,624
Stock-based compensation	4,756	3,476
Net increase in equity and other investments	(739)	(3,068)
Gain on equity securities, net	(1,054)	(83,302)
Gain on sale of loans and leases, net	(119,647)	(34,471)
Change in fair value of loans held for sale	(14,273)	(7,685)
Origination of loans held for sale	(2,974,279)	(1,185,240)
Proceeds from sales of loans held for sale	3,023,664	1,033,110
Change in other assets and liabilities:
Net increase in other assets	(264,389)	(112,348)
Net decrease in other liabilities	(36,279)	(12,309)
Net cash used in operating activities	(144,176)	(117,768)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of investment securities available for sale	(353,601)	(322,410)
Proceeds from investment securities available for sale	401,464	662,496
Proceeds from investment securities held to maturity	220	282
Proceeds from sale of equity securities	0	81,853
Purchases of restricted equity securities	(19,999)	(205,400)
Redemption of restricted equity securities	12,400	202,605
Net change in loans and leases	(1,566,117)	(618,401)
Proceeds from sales of loans and leases	41,386	58,478
Change in premises and equipment	(9,171)	(5,387)
Proceeds from bank owned life insurance death benefits	57	1,869
Net cash paid in store divestiture	0	(44,646)
Net cash used in investing activities	(1,493,361)	(188,661)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in deposit liabilities	2,363,045	731,192
Net increase in securities sold under agreements to repurchase	87,106	10,901
Proceeds from borrowings	600,000	330,670
Repayment of borrowings	(410,000)	(260,670)
Dividends paid on common stock	(92,485)	(92,551)
Proceeds from stock options exercised	0	21
Repurchase and retirement of common stock	(8,611)	(1,980)
Net cash provided by financing activities	2,539,055	717,583
Net increase in cash and cash equivalents	901,518	411,154
Cash and cash equivalents, beginning of period	1,362,756	622,637
Cash and cash equivalents, end of period	2,264,274	1,033,791
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Interest	87,742	96,766
Income taxes	68,332	58,827
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES:
Changes in unrealized gains and losses on investment securities available for sale, net of taxes	83,298	60,326
Changes in unrealized gains and losses on junior subordinated debentures carried at fair value, net of taxes	30,761	17,701
Cumulative effect adjustment to retained earnings	40,181	244
Cash dividend declared on common stock and payable after period-end	0	46,305
Transfer of loans to loans held for sale	9,674	0
Change in GNMA mortgage loans recognized due to repurchase option	$ (1,752)	$ (3,470)