CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 507,956	$ 514,353
Short-term investments	2,819	2,711
Accounts receivable, net of allowance of $4,651 and $3,787, respectively	70,721	56,948
Prepaid expenses and other current assets	14,932	13,990
Total current assets	596,428	588,002
Property and equipment, net	10,092	10,296
Goodwill	734,386	746,079
Intangible assets, net	214,666	225,453
Operating lease - right-of-use assets	32,175	26,452
Other assets	15,330	6,545
Total assets	1,603,077	1,602,827
Current liabilities:
Accounts payable	8,142	9,075
Accrued expenses and other current liabilities	71,927	49,848
Accrued compensation	17,095	31,258
Total current liabilities	97,164	90,181
Other liabilities	10,237	11,539
Operating lease liabilities, net of current portion	29,430	24,994
Deferred taxes	18,848	21,678
Convertible senior notes, net	447,221	440,410
Commitments and contingencies
Stockholders' equity:
Common stock, $0.001 par value; 150,000,000 shares authorized as of March 31, 2020 and December 31, 2019; 74,076,286 shares and 72,761,941 shares issued and outstanding as of March 31, 2020 and December 31, 2019, respectively	74	73
Additional paid-in capital	1,572,024	1,538,716
Accumulated deficit	(537,128)	(507,525)
Accumulated other comprehensive loss	(34,793)	(17,239)
Total stockholders' equity	1,000,177	1,014,025
Total liabilities and stockholders' equity	$ 1,603,077	$ 1,602,827