Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 95,952	$ 409,949
Short-term investments	627,259	376,995
Accounts receivable, net	61,526	129,912
Prepaid expenses and other current assets	81,873	55,129
Total current assets	866,610	971,985
Property and equipment, net	33,546	20,296
Operating lease right-of-use assets	56,336	33,600
Long-term investments	259,277	187,921
Goodwill	36,930	36,910
Intangible assets, net	17,242	22,083
Other assets	86,532	69,543
Total assets	1,356,473	1,342,338
Current liabilities:
Accounts payable	6,481	9,383
Accrued payroll and payroll related liabilities	33,099	53,683
Accrued expenses and other current liabilities	33,606	31,715
Deferred revenue	70,435	83,895
Convertible senior notes, net	71,467	68,154
Total current liabilities	215,088	246,830
Convertible senior notes, net	650,551	630,321
Deferred revenue	3,122	2,733
Operating lease liabilities	48,026	29,293
Other liabilities	3,796	8,254
Total liabilities	920,583	917,431
Stockholders’ equity:
Preferred stock, $0.0001 par value: 10,000 shares authorized as of September 30, 2020 and December 31, 2019, respectively; no shares issued and outstanding as of September 30, 2020 and December 31, 2019, respectively	0	0
Common stock, $0.0001 par value: 500,000 Class A shares authorized, 53,926 and 52,056 shares issued and outstanding as of September 30, 2020 and December 31, 2019, respectively; 500,000 Class B shares authorized, 12,617 and 13,204 shares issued and outstanding as of September 30, 2020 and December 31, 2019, respectively	7	7
Additional paid-in capital	468,081	412,191
Retained earnings (accumulated deficit)	(32,783)	14,235
Accumulated other comprehensive income (loss)	585	(1,526)
Total stockholders’ equity	435,890	424,907
Total liabilities and stockholders’ equity	$ 1,356,473	$ 1,342,338