Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 266,237	$ 314,085
Accounts receivable, net	822	601
Inventory	51,442	38,468
Prepaid expenses and other current assets	34,991	6,779
Total current assets	353,492	359,933
Property and equipment, net	105,332	84,534
Other assets	739	284
Total assets	459,563	444,751
Current liabilities:
Accounts payable	49,621	40,788
Accrued expenses	63,656	34,270
Deferred revenue	16,779	26,550
Other current liabilities	4,299	3,722
Total current liabilities	134,355	105,330
Deferred rent	30,978	27,997
Other liabilities	2,674	3,011
Total liabilities	168,007	136,338
Commitments and contingencies (see Note 9)
Redeemable convertible preferred stock, $.0001 par value, zero and 54,507,243 shares authorized at September 30, 2021 and December 31, 2020, respectively; zero and 54,041,904 shares issued and outstanding as of September 30, 2021 and December 31, 2020, respectively	0	506,510
Stockholders’ equity (deficit):
Common stock, $.0001 par value, 1,050,000,000 and 150,000,000 shares authorized at September 30, 2021 and December 31, 2020, respectively; 111,392,357 and 53,944,305 shares issued and outstanding as of September 30, 2021 and December 31, 2020, respectively	11	5
Additional paid-in capital	738,834	127,179
Accumulated deficit	(447,339)	(325,390)
Accumulated other comprehensive income	50	109
Total stockholders’ equity (deficit)	291,556	(198,097)
Total liabilities, redeemable convertible preferred stock, and stockholders’ equity (deficit)	$ 459,563	$ 444,751