Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 84,518	$ 88,205
Marketable securities	485,374	688,723
Accounts receivable, net	3,762	2,810
Inventory	23,937	19,076
Prepaid expenses and other current assets	34,536	35,021
Total current assets	632,127	833,835
Marketable securities	75,404	29,435
Operating lease assets	48,750	54,409
Property and equipment, net	12,726	15,382
Other non-current assets	4,056	4,057
Total assets	773,063	937,118
Current liabilities:
Accounts payable	10,035	9,780
Accrued expenses	36,742	43,167
Operating lease liabilities	15,860	15,008
Total current liabilities	62,637	67,955
Operating lease liabilities, net of current portion	48,760	56,988
Other non-current liabilities	1,156	1,156
Total liabilities	112,553	126,099
Stockholders’ equity:
Preferred stock, $0.001 par value; 25,000,000 shares authorized; no shares issued or outstanding at June 30, 2024 and December 31, 2023	0	0
Common stock, $0.001 par value; 125,000,000 shares authorized; 73,091,490 shares issued and 56,875,079 shares outstanding at June 30, 2024, and 72,161,489 shares issued and 55,945,078 shares outstanding at December 31, 2023	73	72
Additional paid-in capital	2,464,284	2,436,523
Accumulated other comprehensive loss	(1,045)	(441)
Treasury stock, at cost (16,216,411 shares at June 30, 2024 and December 31, 2023)	(802,486)	(802,486)
Accumulated deficit	(1,000,316)	(822,649)
Total stockholders’ equity	660,510	811,019
Total liabilities and stockholders’ equity	$ 773,063	$ 937,118