CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating activities
Net income	$ 362,173	$ 158,189
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provisions for credit losses	61,258	63,790
Income tax expense	121,481	56,296
Amortization of brokered deposit placement fee	5,193	3,555
Amortization of Secured Borrowing Facility upfront fee	526	277
Amortization of deferred loan origination costs and loan premium/(discounts), net	12,241	3,184
Net amortization of discount on investments	610	189
Unrealized loss on investments	1,191	0
Increase in tax indemnification receivable	(169)	(3,917)
Depreciation of premises and equipment	3,855	3,586
Stock-based compensation expense	13,610	13,891
Unrealized gains on derivatives and hedging activities, net	(43,195)	(4,027)
Gains on sales of loans, net	(238,935)	0
Other adjustments to net income, net	1,574	1,918
Changes in operating assets and liabilities:
Increase in accrued interest receivable	(236,282)	(239,180)
Increase in other interest-earning assets	(40,404)	(4,764)
Increase in other assets	(32,874)	(681)
Decrease in income taxes payable, net	(710)	(3,947)
Increase in accrued interest payable	18,610	7,405
Increase (decrease) in other liabilities	134,661	(39,049)
Total adjustments	(217,759)	(141,474)
Total net cash provided by operating activities	144,414	16,715
Investing activities
Loans acquired and originated	(2,310,173)	(2,253,624)
Net proceeds from sales of loans held for investment	3,283,408	0
Proceeds from claim payments	11,314	11,587
Net decrease in loans held for investment	1,177,589	1,077,273
Purchases of available-for-sale securities	(62,752)	(33,483)
Proceeds from sales and maturities of available-for-sale securities	18,836	4,570
Total net cash provided by (used in) investing activities	2,118,222	(1,193,677)
Financing activities
Brokered deposit placement fee	(1,762)	(1,498)
Net increase in certificates of deposit	69,971	404,121
Net increase (decrease) in other deposits	(55,044)	290,631
Borrowings collateralized by loans in securitization trusts - issued	633,532	451,128
Borrowings collateralized by loans in securitization trusts - repaid	(281,086)	(260,953)
Repayment of borrowings under Secured Borrowing Facility	(289,230)	0
Fees paid on Secured Borrowing Facility	(3,183)	(1,065)
Common stock dividends paid	(12,595)	(13,020)
Preferred stock dividends paid	(3,464)	(4,468)
Common stock repurchased	(558,167)	(60,000)
Net cash provided by (used in) financing activities	(501,028)	804,876
Net increase (decrease) in cash, cash equivalents and restricted cash	1,761,608	(372,086)
Cash, cash equivalents and restricted cash at beginning of period	5,720,760	2,681,895
Cash, cash equivalents and restricted cash at end of period	7,482,368	2,309,809
Cash disbursements made for:
Interest	151,017	147,235
Income taxes paid	3,630	3,700
Income taxes refunded	(2,890)	(41)
Reconciliation of the Consolidated Statements of Cash Flows to the Consolidated Balance Sheets:
Total cash, cash equivalents and restricted cash	$ 7,482,368	$ 2,309,809