Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 1,599,113	$ 1,502,648
Short-term investments	0	435,923
Accounts receivable	149,787	101,340
Inventory	288,469	231,961
Other current assets	147,941	213,324
Total current assets	2,185,310	2,485,196
Property and equipment, net	199,249	190,430
Intangible assets, net	14,204	13,628
Right of use assets	72,663	91,761
Other non-current assets	190,792	203,703
Total assets	2,662,218	2,984,718
Current liabilities:
Accounts payable	44,163	111,090
Accrued expenses	221,009	193,553
Deferred revenue, current portion	89,244	89,244
Other current liabilities	19,027	22,139
Total current liabilities	373,443	416,026
Long-term debt	1,094,912	992,493
Lease liabilities, net of current portion	63,428	80,367
Deferred revenue, net of current portion	596,738	663,488
Contingent consideration	43,600	50,800
Other non-current liabilities	20,569	19,785
Total liabilities	2,192,690	2,222,959
Commitments and contingencies (Note 16)
Stockholders’ equity:
Preferred stock, $0.0001 par value, 3,333,333 shares authorized; none issued and outstanding
Common stock, $0.0001 par value, 198,000,000 shares authorized; 79,958,527 and 79,374,247 issued and outstanding at September 30, 2021, and December 31, 2020, respectively	8	8
Additional paid-in capital	3,554,307	3,609,877
Accumulated other comprehensive (loss) income, net of tax	(20)	3
Accumulated deficit	(3,084,767)	(2,848,129)
Total stockholders’ equity	469,528	761,759
Total liabilities and stockholders’ equity	$ 2,662,218	$ 2,984,718