Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 1,697,275	$ 1,502,648
Short-term investments	30,000	435,923
Accounts receivable	127,520	101,340
Inventory	268,756	231,961
Other current assets	141,666	213,324
Total current assets	2,265,217	2,485,196
Property and equipment, net	203,330	190,430
Intangible assets, net	14,105	13,628
Right of use assets	72,868	91,761
Other non-current assets	203,553	203,703
Total assets	2,759,073	2,984,718
Current liabilities:
Accounts payable	76,681	111,090
Accrued expenses	240,141	193,553
Deferred revenue, current portion	89,244	89,244
Other current liabilities	18,956	22,139
Total current liabilities	425,022	416,026
Long-term debt	1,092,985	992,493
Lease liabilities, net of current portion	65,285	80,367
Deferred revenue, net of current portion	619,233	663,488
Contingent consideration	50,800	50,800
Other non-current liabilities	20,640	19,785
Total liabilities	2,273,965	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; 79,830,411 and 79,374,247 issued and outstanding at June 30, 2021, and December 31, 2020, respectively	8	8
Additional paid-in capital	3,521,721	3,609,877
Accumulated other comprehensive income, net of tax	2	3
Accumulated deficit	(3,036,623)	(2,848,129)
Total stockholders’ equity	485,108	761,759
Total liabilities and stockholders’ equity	$ 2,759,073	$ 2,984,718