Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 20,518	$ 8,849
Marketable securities	0	1,614
Accounts receivable, net	40,465	27,917
Prepaid expenses and other current assets	3,749	3,916
Deferred tax assets	787	787
Total current assets	65,519	43,083
Property and equipment, net	152,006	111,772
Goodwill	42,403	42,403
Intangible assets, net	17,872	19,676
Other assets	3,811	2,468
Total assets	281,611	219,402
Current liabilities:
Accounts payable	15,467	4,004
Accrued expenses and other liabilities	36,836	26,109
Deferred revenue	35,365	25,488
Current portion of long-term debt	10,875	875
Current portion of capital leases	1,312	309
Total current liabilities	99,855	56,785
Deferred revenue, net of current portion	52,785	27,267
Long-term debt	2,188	2,625
Long-term portion of capital leases	2,325	381
Deferred tax liabilities	3,639	3,432
Other liabilities	3,806	1,482
Total liabilities	$ 164,598	$ 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; 36,949 and 36,267 shares issued and outstanding at June 30, 2015 and December 31, 2014, respectively	$ 4	$ 4
Additional paid-in capital	193,758	189,725
Accumulated deficit	(76,703)	(62,884)
Accumulated other comprehensive loss	(783)	(443)
Total common stockholders' equity	116,276	126,402
Non-controlling interests	737	1,028
Total stockholders' equity	117,013	127,430
Total liabilities and stockholders' equity	$ 281,611	$ 219,402