Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities
Net loss	$ (398,073)	$ (1,138,473)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation and amortization	35,474	23,135
Stock-based compensation	159,978	859,486
Amortization of premium on marketable securities	486	24
Accretion of discount on marketable securities	(7,826)	(10,081)
Loss on disposal of assets	3,228	0
Other	87	103
Changes in operating assets and liabilities
Prepaid expenses and other assets	(83,653)	(46,307)
Operating lease right-of-use assets	20,257	19,518
Accounts payable	500,004	1,161
Insurance reserves	(403,330)	126,711
Accrued and other liabilities	(25,338)	94,238
Lease liabilities	(8,220)	(14,342)
Net cash used in operating activities	(206,926)	(84,827)
Cash flows from investing activities
Purchases of marketable securities	(1,179,343)	(607,190)
Purchase of non-marketable security	(10,000)	0
Purchases of term deposits	(75,000)	0
Proceeds from sales of marketable securities	406,508	466,174
Proceeds from maturities of marketable securities	1,661,458	838,177
Proceeds from maturity of term deposit	30,000	0
Purchases of property and equipment and scooter fleet	(34,476)	(25,126)
Cash paid for acquisitions, net of cash acquired	(12,440)	(1,711)
Other investing activities	960	0
Net cash provided by investing activities	787,667	670,324
Cash flows from financing activities
Repayment of loans	(6,087)	0
Proceeds from exercise of stock options and other common stock issuances	2,372	1,601
Payment of deferred offering costs	0	(5,044)
Taxes paid related to net share settlement of equity awards	(6,762)	(784,724)
Principal payments on finance lease obligations	(6,167)	0
Net cash used in financing activities	(16,644)	(788,167)
Effect of foreign exchange on cash, cash equivalents and restricted cash and cash equivalents	(120)	102
Net increase (decrease) in cash, cash equivalents and restricted cash and cash equivalents	563,977	(202,568)
Beginning of period	564,465	706,486
End of period	1,128,442	503,918
Reconciliation of cash, cash equivalents and restricted cash and cash equivalents to the consolidated balance sheets
Total cash, cash equivalents and restricted cash and cash equivalents	1,128,442	503,918
Non-cash investing and financing activities
Purchases of property and equipment, and scooter fleet not yet settled	7,585	16,612
Deferred offering costs accrued, unpaid	0	2,240
Right-of-use assets acquired under operating leases	19,861	38,488
Purchases of property and equipment financed by seller	3,464	0
Settlement of pre-existing right-of-use assets under operating leases in connection with acquisition of Flexdrive	133,088	0
Settlement of pre-existing lease liabilities under operating leases in connection with acquisition of Flexdrive	$ 130,089	$ 0