Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 95,103	$ 48,668
Restricted cash	228	187
Short-term investments	928,596	688,606
Accounts receivable, net of allowance of $2,965 in 2021 and $3,080 in 2020	110,416	78,565
Inventory	28,022	20,031
Prepaid expenses and other current assets, net	28,858	26,606
Total current assets	1,191,223	862,663
Property and equipment, net	59,293	33,348
Operating lease right-of-use assets	47,656	21,399
Other assets	13,202	14,743
Total assets	1,311,374	932,153
Current liabilities:
Accounts payable	8,181	8,096
Accrued compensation	35,331	30,371
Other accrued liabilities	96,486	60,407
Deferred revenue, current portion	9,667	50,125
Short-term debt financing	50,049	50,054
Total current liabilities	199,714	199,053
Long-term debt financing	280,085	202,493
Deferred revenue, long-term portion	22,706	22,805
Operating lease liabilities, long-term portion	48,388	21,246
Other long-term liabilities	1,464	320
Total liabilities	552,357	445,917
Commitments and contingencies (Note 8)
Stockholders' equity:
Common stock, $0.0001 par value: 750,000 shares authorized at both September 30, 2021 and December 31, 2020, respectively; 94,538 and 86,223 shares issued and outstanding at September 30, 2021 and December 31, 2020, respectively	10	9
Additional paid in capital	2,011,788	1,411,286
Accumulated deficit	(1,254,272)	(929,318)
Accumulated other comprehensive gain	1,491	4,259
Total stockholders' equity	759,017	486,236
Total liabilities and stockholders' equity	$ 1,311,374	$ 932,153