CONDENSED BALANCE SHEETS - USD ($) $ in Thousands		Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents		$ 143,286	$ 188,425	[1]
Short-term investments		104,636	107,720	[1]
Accounts receivable		130,010	13	[1]
Income tax receivable		13,061
Prepaid expenses and other current assets		9,073	7,177	[1]
Total current assets		400,066	303,335	[1]
Property and equipment, net		7,393	7,372	[1]
Intangible assets, net		1,276	1,312	[1]
Goodwill		949	949	[1]
Restricted cash		917	917	[1]
Operating lease right-of-use asset		24,682	25,382	[1]
Other assets		1,379	2,015	[1]
Total assets		436,662	341,282	[1]
Current liabilities:
Accounts payable		3,782	4,158	[1]
Accrued liabilities		28,353	30,051	[1]
Deferred revenue, current portion		73,866	51,381	[1]
Total current liabilities		106,001	85,590	[1]
Deferred revenue, net of current portion		236,789	178,858	[1]
Operating lease liabilities - long term		24,105	24,871	[1]
Other long-term liabilities	[1]		850
Total liabilities		366,895	290,169	[1]
Commitments and contingencies (Note 11)				[1]
Stockholders' equity:
Common stock, $0.00001 par value; 75,000,000 shares authorized; 45,918,616 and 45,523,088 shares issued and outstanding at March 31, 2020 and December 31, 2019, respectively		1	1	[1]
Additional paid-in capital		474,455	468,285	[1]
Accumulated other comprehensive income		336	57	[1]
Accumulated deficit		(405,025)	(417,230)	[1]
Total stockholders' equity		69,767	51,113	[1]
Total liabilities and stockholders' equity		436,662	341,282	[1]
Convertible Preferred Stock
Stockholders' equity:
Convertible preferred stock, $0.00001 par value; 10,000,000 shares authorized; and no shares issued and outstanding at March 31, 2020 and December 31, 2019.				[1]

[1] The condensed balance sheet as of December 31, 2019 was derived from the audited financial statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2019.