Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 10,619	$ 8,849
Marketable securities	0	1,614
Accounts receivable, net	32,327	27,917
Prepaid expenses and other current assets	3,262	3,916
Deferred tax assets	787	787
Total current assets	46,995	43,083
Property and equipment, net	120,760	111,772
Goodwill	42,403	42,403
Intangible assets, net	18,777	19,676
Other assets	2,831	2,468
Total assets	231,766	219,402
Current liabilities:
Accounts payable	11,367	4,004
Accrued expenses and other liabilities	18,756	26,109
Deferred revenue	25,164	25,488
Current portion of long-term debt	875	875
Current portion of capital leases	900	309
Total current liabilities	57,062	56,785
Deferred revenue, net of current portion	39,021	27,267
Long-term debt	7,406	2,625
Long-term portion of capital leases	2,010	381
Deferred tax liabilities	3,554	3,432
Other liabilities	1,794	1,482
Total liabilities	110,847	91,972
Commitments and contingencies (Note 9)
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; 36,560 and 36,267 shares issued and outstanding at March 31, 2015 and December 31, 2014, respectively	4	4
Additional paid-in capital	191,388	189,725
Accumulated deficit	(70,766)	(62,884)
Accumulated other comprehensive loss	(842)	(443)
Total common stockholders' equity	119,784	126,402
Non-controlling interests	1,135	1,028
Total stockholders' equity	120,919	127,430
Total liabilities and stockholders' equity	$ 231,766	$ 219,402