CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 218,228	$ 241,738
Short-term investments	150,000	150,000
Accounts receivable, net of allowance for doubtful accounts of $1,385 and $1,245 as of March 31, 2020 and December 31, 2019, respectively	52,446	40,875
Inventories	19,245	28,983
Deferred costs, current	22,595	16,051
Prepaid expenses and other current assets	13,869	9,860
Total current assets	476,383	487,507
Property and equipment, net	12,835	10,354
Operating lease right-of-use assets	17,189
Restricted cash, noncurrent	1,270	1,270
Goodwill	35,801	35,801
Intangible assets, net	15,773	16,469
Deferred costs, noncurrent	10,495	5,700
Other noncurrent assets	215	3,460
TOTAL ASSETS	569,961	560,561
Current liabilities:
Accounts payable	8,509	8,362
Accrued expenses and other current liabilities	29,068	27,801
Deferred revenue, current	5,351	3,945
Advance payments from partner, current	1,767	1,767
Total current liabilities	44,695	41,875
Operating lease liabilities, noncurrent	15,476
Deferred revenue, noncurrent	748	654
Advance payment from partner, noncurrent	7,754	7,754
Other noncurrent liabilities	0	2,914
TOTAL LIABILITIES	68,673	53,197
Commitments and contingencies (Note 9)
Stockholders’ equity:
Preferred stock, par value of $0.001 per share; 100,000 shares authorized as of March 31, 2020 and December 31, 2019, respectively; zero shares issued and outstanding as of March 31, 2020 and December 31, 2019, respectively	0	0
Common stock, par value of $0.001 per share; 900,000 shares authorized as of March 31, 2020 and December 31, 2019, respectively; 97,293 and 95,301 shares issued and outstanding as of March 31, 2020 and December 31, 2019, respectively	97	95
Additional paid-in capital	670,962	671,467
Accumulated deficit	(169,771)	(164,198)
TOTAL STOCKHOLDERS’ EQUITY	501,288	507,364
TOTAL LIABILITIES, REDEEMABLE CONVERTIBLE PREFERRED STOCK, AND STOCKHOLDERS’ EQUITY	$ 569,961	$ 560,561