Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 274,573	$ 273,314
Accounts receivable, net of allowances of $6,149 and $7,147 at March 31, 2021 and December 31, 2020, respectively	28,308	32,923
Prepaid expenses	4,905	5,800
Other current assets	4,057	12,901
Total current assets	311,843	324,938
Property and equipment, net	20,626	21,421
Operating lease right-of-use assets	28,124	29,192
Goodwill	51,205	51,205
Intangible assets, net	6,188	6,600
Equity method investment	19,576	19,905
Other assets	4,709	4,800
Total assets	442,271	458,061
Current liabilities
Accounts payable (includes related party payables of $1,040 and $913 at March 31, 2021 and December 31, 2020, respectively)	13,831	13,198
Accrued employee expenses	4,549	6,506
Operating lease liabilities, current	4,847	4,771
Accrued expenses and other current liabilities	16,064	18,402
Total current liabilities	39,291	42,877
Deferred tax liabilities	57	40
Operating lease liabilities, net of current portion	30,645	31,974
Other liabilities	86	388
Total liabilities	70,079	75,279
Commitments and contingencies (Note 8)
Stockholders’ Equity
Preferred stock — $0.0001 par value; 20,000,000 shares authorized at March 31, 2021 and December 31, 2020; no shares issued and outstanding at March 31, 2021 and December 31, 2020	0	0
Common stock — $0.0001 par value; 1,000,000,000 shares authorized at March 31, 2021 and December 31, 2020; 98,667,561 and 99,690,942 shares issued and outstanding at March 31, 2021 and December 31, 2020, respectively	10	10
Additional paid-in capital	736,118	738,290
Accumulated deficit	(363,936)	(355,518)
Total stockholders’ equity	372,192	382,782
Total liabilities and stockholders’ equity	$ 442,271	$ 458,061