Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 209,351	$ 61,926
Restricted cash, current portion	178	55
Short-term investments	600,205	379,065
Accounts receivable, net of allowance of $3,080 in 2020 and $2,919 in 2019	70,674	53,351
Inventory	20,377	12,394
Prepaid expenses and other current assets, net	15,227	16,376
Total current assets	916,012	523,167
Property and equipment, net	28,249	23,283
Operating lease right-of-use assets	20,296	23,730
Other assets	12,156	12,476
Total assets	976,713	582,656
Current liabilities:
Accounts payable	9,250	8,604
Accrued compensation	22,450	16,088
Other accrued liabilities	62,893	49,043
Deferred revenue, current portion	51,227	56,016
Short-term debt financing	50,052	50,123
Total current liabilities	195,872	179,874
Long-term debt financing	199,959	73,656
Deferred revenue, long-term portion	23,128	23,808
Operating lease liabilities, long-term portion	21,444	26,297
Other long-term liabilities	310	310
Total liabilities	440,713	303,945
Commitments and contingencies (Note 8)
Stockholders' equity:
Common stock, $0.0001 par value: 750,000 shares authorized at both September 30, 2020 and December 31, 2019, respectively; 85,281 and 78,005 shares issued and outstanding at September 30, 2020 and December 31, 2019, respectively	9	8
Additional paid in capital	1,383,727	976,955
Accumulated deficit	(852,906)	(699,171)
Accumulated other comprehensive income	5,170	919
Total stockholders' equity	536,000	278,711
Total liabilities and stockholders' equity	$ 976,713	$ 582,656