Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 196,402	$ 107,721
Accounts receivable, net of allowances of $3,094 and $2,600 at September 30, 2017 and December 31, 2016, respectively (includes related party receivables of $218 and $393 at September 30, 2017 and December 31, 2016, respectively)	39,587	36,867
Prepaid expenses	7,114	6,044
Other current assets	2,821	2,278
Total current assets	245,924	152,910
Property and equipment, net	68,380	66,941
Goodwill	53,270	53,270
Intangible assets, net	16,878	19,774
Other assets	1,589	1,553
Total assets	386,041	294,448
Current liabilities
Accounts payable (includes related party payables of $4,353 and $2,925 at September 30, 2017 and December 31, 2016, respectively)	21,309	13,827
Accrued employee expenses	6,692	8,951
Accrued expenses and other current liabilities (includes related party accrued expenses of $49 and $992 at September 30, 2017 and December 31, 2016, respectively)	10,954	12,583
Total current liabilities	38,955	35,361
Deferred tax liabilities	3,393	2,994
Lease financing obligations, net of current portion	29,086	28,833
Other liabilities	3,474	2,679
Total liabilities	74,908	69,867
Commitments and contingencies (Note 6)
Stockholders’ Equity
Preferred stock — $0.0001 par value; 20,000,000 shares authorized at September 30, 2017 and December 31, 2016, respectively; no shares issued and outstanding at September 30, 2017 and December 31, 2016	0	0
Common stock — $0.0001 par value; 1,000,000,000 shares authorized at September 30, 2017 and December 31, 2016; 99,892,583 and 86,159,527 shares issued and outstanding at September 30, 2017 and December 31, 2016, respectively	10	9
Additional paid-in capital	653,732	542,807
Accumulated deficit	(342,609)	(318,235)
Total stockholders’ equity	311,133	224,581
Total liabilities and stockholders’ equity	$ 386,041	$ 294,448