Condensed Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands		Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents		$ 164,671	$ 143,228
Short-term marketable securities		773,160	379,574
Accounts receivable, net		41,017	47,986
Inventory		20,354	15,181
Prepaid expenses and other current assets		11,101	11,389
Total current assets		1,010,303	597,358
Long-term marketable securities		146,118	268,783
Property and equipment, net		56,995	43,668
Right-of-use assets		38,503	29,140
Intangible assets, net		17,148	8,524
Goodwill		3,290	3,290
Capitalized license fees		55	6,890
Other assets		5,124	4,882
Total Assets	[1]	1,277,536	962,535
Current liabilities:
Accounts payable		15,982	16,197
Accrued compensation		18,526	18,557
Accrued expenses		24,055	25,703
Deferred revenue		11,485	12,277
Total current liabilities		70,048	72,734
Long-term operating lease liabilities		41,117	33,256
Obligation related to royalty		0	6,880
Other long-term liabilities		1,382	1,672
Total Liabilities	[1]	112,547	114,542
Redeemable noncontrolling interest		50,400	49,600
Stockholders’ equity:
Common stock, par value of $0.00001 per share; 350,000,000 shares authorized as of June 30, 2020 and December 31, 2019; 99,312,237 and 94,261,414 shares issued and outstanding as of June 30, 2020 and December 31, 2019, respectively		1	1
Additional paid-in capital		1,544,373	1,150,090
Accumulated other comprehensive income		5,392	1,111
Accumulated deficit		(435,177)	(352,809)
Total Stockholders’ Equity		1,114,589	798,393
Total Liabilities, Redeemable Noncontrolling Interest and Stockholders’ Equity		$ 1,277,536	$ 962,535

[1] As of June 30, 2020 and December 31, 2019, includes $38.4 million and $45.1 million of assets, respectively, that can be used only to settle obligations of the consolidated variable interest entity (“VIE”) and VIE’s subsidiaries, and $4.0 million and $5.7 million of liabilities of the consolidated VIE and VIE’s subsidiaries, respectively, for which their creditors do not have recourse to the general credit of the Company. See Note 3, Investment in Joint Venture.