Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 18,978	$ 19,485
Accounts receivable, net	28,150	42,978
Prepaid expenses and other current assets	5,587	5,344
Total current assets	52,715	67,807
Property and equipment, net	250,935	250,765
Goodwill	42,403	42,403
Intangible assets, net	12,867	13,783
Other assets	6,228	6,223
Total assets	365,148	380,981
Current liabilities:
Accounts payable	10,036	15,516
Accrued expenses and other liabilities	25,327	27,723
Deferred revenue	55,081	50,869
Current portion of long-term debt	875	1,094
Current portion of capital leases and notes payable	4,243	3,993
Total current liabilities	95,562	99,195
Deferred revenue, net of current portion	150,764	152,719
Long-term debt	10,656	15,875
Long-term portion of capital leases and notes payable	4,128	4,612
Deferred tax liabilities	3,386	3,208
Other liabilities	6,723	6,826
Total liabilities	271,219	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; 38,951 and 38,562 shares issued and outstanding at March 31, 2017 and December 31, 2016, respectively	4	4
Additional paid-in capital	213,510	211,275
Accumulated deficit	(119,481)	(112,601)
Accumulated other comprehensive loss	(808)	(870)
Total common stockholders' equity	93,225	97,808
Non-controlling interests	704	738
Total stockholders' equity	93,929	98,546
Total liabilities and stockholders' equity	$ 365,148	$ 380,981