CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net loss	$ (105,891)	$ (38,151)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	20,061	18,971
Non-cash interest and other	12,411	8,224
Loss on extinguishment of long-term debt	990	0
Share-based compensation	77,303	61,088
Loss on revaluation of equity investment	0	14,087
Non-cash lease expense	15,125	6,690
Recovery of common stock in connection with indemnification settlement agreement	0	(789)
Transaction and loan losses	108,883	27,841
Change in deferred income taxes	(984)	(754)
Changes in operating assets and liabilities:
Settlements receivable	60,248	(1,027,472)
Customer funds	(210,201)	(109,439)
Purchase of loans held for sale	(573,502)	(507,755)
Sales and principal payments of loans held for sale	555,584	467,518
Customers payable	212,929	912,749
Settlements payable	(6,684)	211,984
Charge-offs to accrued transaction losses	(17,413)	(17,443)
Other assets and liabilities	(27,563)	5,095
Net cash provided by operating activities	121,296	32,444
Cash flows from investing activities:
Purchase of marketable debt securities	(363,874)	(193,673)
Proceeds from maturities of marketable debt securities	98,146	111,505
Proceeds from sale of marketable debt securities	247,027	44,810
Purchase of marketable debt securities from customer funds	(144,494)	(34,613)
Proceeds from maturities of marketable debt securities from customer funds	65,000	33,000
Proceeds from sale of marketable debt securities from customer funds	22,457	0
Purchase of property and equipment	(26,137)	(18,168)
Payments for other investments	0	(2,000)
Business combinations, net of cash acquired	(12,742)	(11,248)
Net cash used in investing activities	(114,617)	(70,387)
Cash flows from financing activities:
Proceeds from issuance of convertible senior notes, net	986,241	0
Purchase of convertible senior note hedges	(149,200)	0
Proceeds from issuance of warrants	99,500	0
Payments for tax withholding related to vesting of restricted stock units	(48,772)	(50,801)
Proceeds from the exercise of stock options, net	31,406	25,328
Other financing activities	(1,055)	(1,379)
Net cash provided by (used in) financing activities	918,120	(26,852)
Effect of foreign exchange rate on cash and cash equivalents	(13,588)	1,277
Net increase (decrease) in cash, cash equivalents, and restricted cash	911,211	(63,518)
Cash, cash equivalents, and restricted cash, beginning of period	1,098,706	632,847
Cash, cash equivalents, and restricted cash, end of period	$ 2,009,917	$ 569,329