Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 22,321	$ 19,485
Accounts receivable, net	26,989	42,978
Prepaid expenses and other current assets	6,113	5,344
Total current assets	55,423	67,807
Property and equipment, net	258,744	250,765
Goodwill	42,403	42,403
Intangible assets, net	11,951	13,783
Other assets	5,945	6,223
Total assets	374,466	380,981
Current liabilities:
Accounts payable	15,229	15,516
Accrued expenses and other liabilities	34,987	27,723
Deferred revenue	61,648	50,869
Current portion of long-term debt	875	1,094
Current portion of capital leases and notes payable	4,527	3,993
Total current liabilities	117,266	99,195
Deferred revenue, net of current portion	144,538	152,719
Long-term debt	5,438	15,875
Long-term portion of capital leases and notes payable	4,393	4,612
Deferred tax liabilities	3,451	3,208
Other liabilities	6,627	6,826
Total liabilities	281,713	282,435
Commitments and contingencies (Note 8)
Stockholders' equity:
Preferred stock, $0.0001 par value; 5,000 shares authorized; no shares issued and outstanding
Common stock, $0.0001 par value; 100,000 shares authorized; 39,757 and 38,562 shares issued and outstanding at June 30, 2017 and December 31, 2016, respectively	4	4
Additional paid-in capital	220,261	211,275
Accumulated deficit	(127,498)	(112,601)
Accumulated other comprehensive loss	(901)	(870)
Total common stockholders' equity	91,866	97,808
Non-controlling interests	887	738
Total stockholders' equity	92,753	98,546
Total liabilities and stockholders' equity	$ 374,466	$ 380,981