CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents		$ 38,990	$ 103,771
Restricted cash		11	6,089
Marketable securities, current		11	28,230
Accounts receivable, net of allowances for bad debt of $1,864 and $4,599 at December 31, 2019 and December 31, 2018, respectively	[1]	65,863	102,798
Prepaid expenses		33,230	45,058
Other current assets		4,792	8,508
Total current assets		142,897	294,454
Marketable securities, non-current		0	6,658
Property and equipment, net		26,525	67,937
Operating lease right-of-use assets		53,965
Goodwill		222,969	224,899
Intangible assets, net		77,613	98,706
Other assets		8,054	8,982
Equity method investment		0	1,619
Total assets		532,023	703,255
Current liabilities:
Accounts payable		21,551	13,576
Accrued expenses		65,987	59,545
Deferred revenues, current		65,858	57,101
Short-term convertible debt, net of debt issuance costs		0	113,542
Total current liabilities		153,396	243,764
Lease financing obligation		0	9,494
Operating lease liabilities, non-current		60,976
Deferred tax liabilities		1,679	1,347
Deferred revenues, non-current		21,941	59,841
Other non-current liabilities		4,589	10,797
Redeemable noncontrolling interest		12,500	12,500
Commitments and contingencies
Series A Convertible Participating Perpetual Preferred Stock, $0.0001 par value; 10,000 shares authorized; 217 shares issued and outstanding at December 31, 2019		200,865	176,603
Stockholders’ equity:
Common stock, $0.0001 par value; 100,000 shares authorized, 51,704 and 49,836 shares issued; 44,542 and 42,674 outstanding at December 31, 2019 and December 31, 2018, respectively		5	5
Treasury stock, at cost (7,162 and 7,162 shares at December 31, 2019 and December 31, 2018, respectively)		(82,087)	(82,087)
Additional paid-in capital		525,739	534,673
Accumulated other comprehensive loss		(33,261)	(30,383)
Accumulated deficit		(334,319)	(233,299)
Total stockholders’ equity		76,077	188,909
Total liabilities and stockholders’ equity		$ 532,023	$ 703,255

[1] See Note 5. Investments in Affiliates and Related Transactions for related party transactions reflected in this account.