Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 178,699	$ 181,534
Accounts receivable, net of allowances of $8,453 and $6,591 at September 30, 2020 and December 31, 2019, respectively (includes related party receivables of $10,013 and $209 at September 30, 2020 and December 31, 2019, respectively)	40,723	38,239
Prepaid expenses	7,197	7,158
Other current assets	5,904	6,033
Disposal Group, Including Discontinued Operation, Assets, Current	27,280	6,777
Total current assets	259,803	239,741
Property and equipment, net	23,789	27,781
Operating lease right-of-use assets	31,752	36,064
Goodwill	51,205	59,469
Intangible assets, net	7,200	9,000
Equity method investment	20,433	21,894
Other assets	3,367	3,620
Disposal Group, Including Discontinued Operation, Other Assets	0	24,118
Total assets	397,549	421,687
Current liabilities
Accounts payable (includes related party payables of $405 and $6,439 at September 30, 2020 and December 31, 2019, respectively)	13,140	21,319
Accrued employee expenses	5,117	5,969
Operating lease liabilities, current	4,625	5,875
Accrued expenses and other current liabilities (includes related party accrued expenses of $0 and $1,299 at September 30, 2020 and December 31, 2019, respectively)	16,196	20,252
Disposal Group, Including Discontinued Operation, Liabilities, Current	754	755
Total current liabilities	39,832	54,170
Deferred tax liabilities	442	783
Operating lease liabilities, net of current portion	33,312	37,127
Other liabilities	2,060	2,336
Total liabilities	75,646	94,416
Commitments and contingencies (Note 8)
Stockholders’ Equity
Preferred stock — $0.0001 par value; 20,000,000 shares authorized at September 30, 2020 and December 31, 2019; no shares issued and outstanding at September 30, 2020 and December 31, 2019	0	0
Common stock — $0.0001 par value; 1,000,000,000 shares authorized at September 30, 2020 and December 31, 2019; 106,072,807 and 106,865,830 shares issued and outstanding at September 30, 2020 and December 31, 2019, respectively	11	11
Additional paid-in capital	764,276	759,322
Accumulated deficit	(442,384)	(432,062)
Total stockholders’ equity	321,903	327,271
Total liabilities and stockholders’ equity	$ 397,549	$ 421,687