Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities
Net loss	$ (48,149)	$ (65,171)
Adjustments to reconcile net loss to net cash used in operating activities:
Reduction in the carrying amount of ROU assets	2,289	1,094
Depreciation and amortization	3,695	2,173
Stock-based compensation	16,485	45,519
Amortization of debt issuance costs	84	0
Accretion expense	43	0
Non-cash interest expense	0	84
Revaluation of warrant liability to estimated fair value	(14,700)	(88)
Expenses related to invoices in dispute	0	624
Loss on disposal of property and equipment and inventory	326	0
Other	0	120
Changes in operating assets and liabilities:
Accounts receivable	7,450	244
Inventory	372	582
Prepaid expenses and other current assets	(743)	(4,793)
Prepaid partnership costs	(845)	349
Operating lease right-of-use asset	(13,703)	(4,657)
Other non-current assets	(1)	(216)
Accounts payable	13,666	4,906
Accounts payable - due to related party	(1)	143
Accrued expenses and other current liabilities	(13,225)	(4,709)
Accrued interest	(1,294)	(1,399)
Deferred revenue	(1,959)	(476)
Lease incentive liability	22	(5)
Operating lease liability	12,486	3,960
Other noncurrent liabilities	3,365	(18)
Contingent liability	500	0
Net cash used in operating activities	(33,837)	(21,734)
Cash flows from investing activities
Purchase of property and equipment	(17,384)	(3,572)
Capitalization of internal-use software	(1,611)	(14)
Disposal of property and equipment	0	179
Net cash used in investing activities	(18,995)	(3,407)
Cash flows from financing activities
Due from employees for taxes paid on partial recourse notes	0	(8,340)
Proceeds from issuance of Series D-1 convertible notes		28,721
Payments of long term debt	(4,083)	0
Proceeds from exercise of stock options	159	864
Payment of issuance costs related to Series D and D-1 preferred stock		(1,290)
Proceeds from financing activity	0	0
Payment of financing activity principal	(184)	(145)
Net cash (used in) provided by financing activities	(4,108)	19,810
Effect of exchange rate changes on cash and cash equivalents	88	0
Net decrease in cash and cash equivalents	(56,852)	(5,331)
Cash and cash equivalents, beginning of period		58,806
Cash and cash equivalents, end of period	205,408	53,475
Supplemental disclosures of cash flow information
Cash paid for interest	1,504	2,523
Non-cash investing and financing activities
Purchases of property and equipment not yet settled	18,167	5,281
Initial recognition of operating lease right-of-use asset	13,989	4,835
Initial recognition of operating lease liability	$ 13,511	$ 4,471