Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 128,175	$ 409,949
Short-term investments	607,620	376,995
Accounts receivable, net	68,548	129,912
Prepaid expenses and other current assets	68,556	55,129
Total current assets	872,899	971,985
Property and equipment, net	26,785	20,296
Operating lease right-of-use assets	37,579	33,600
Long-term investments	238,643	187,921
Goodwill	36,843	36,910
Intangible assets, net	18,005	22,083
Other assets	85,485	69,543
Total assets	1,316,239	1,342,338
Current liabilities:
Accounts payable	11,919	9,383
Accrued payroll and payroll related liabilities	29,215	53,683
Accrued expenses and other current liabilities	28,746	31,715
Deferred revenue	83,958	83,895
Convertible senior notes, net	70,345	68,154
Total current liabilities	224,183	246,830
Convertible senior notes, net	643,690	630,321
Deferred revenue	2,685	2,733
Operating lease liabilities	33,028	29,293
Other liabilities	3,175	8,254
Total liabilities	906,761	917,431
Stockholders’ equity:
Preferred stock, $0.0001 par value: 10,000 shares authorized as of June 30, 2020 and December 31, 2019, respectively; no shares issued and outstanding as of June 30, 2020 and December 31, 2019, respectively	0	0
Common stock, $0.0001 par value: 500,000 Class A shares authorized, 53,374 and 52,056 shares issued and outstanding as of June 30, 2020 and December 31, 2019, respectively; 500,000 Class B shares authorized, 12,770 and 13,204 shares issued and outstanding as of June 30, 2020 and December 31, 2019, respectively	7	7
Additional paid-in capital	443,466	412,191
Retained earnings (accumulated deficit)	(37,140)	14,235
Accumulated other comprehensive income (loss)	3,145	(1,526)
Total stockholders’ equity	409,478	424,907
Total liabilities and stockholders’ equity	$ 1,316,239	$ 1,342,338