Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 12,806	$ 41,644
Restricted cash	52,692	63,635
Accounts receivable, net of allowance of $3,537 and $3,610, respectively	19,886	17,113
Inventory	7,742	7,273
Prepaid expenses and other current assets	8,879	6,745
Total current assets	102,005	136,410
Property and equipment, net	935,036	971,119
Intangible and other assets, net of accumulated amortization of $7,540 and $7,314, respectively	31,395	21,736
Total assets	1,068,436	1,129,265
Current liabilities:
Current portion of long-term debt	87,732	79,215
Accounts payable	6,988	6,048
Accrued contract termination charge	0	21,002
Accrued expenses	22,890	20,754
Derivative liabilities	939	1,326
Payables to affiliates	286	225
Deferred revenue	33,047	31,747
Total current liabilities	151,882	160,317
Long-term debt, less current portion	400,727	434,651
Employee benefit obligations	4,458	4,389
Derivative liabilities	120,161	226,659
Deferred revenue	5,777	6,052
Other non-current liabilities	4,088	5,973
Total non-current liabilities	535,211	677,724
Contingencies (Note 7)
Stockholders’ equity:
Preferred Stock	0	0
Additional paid-in capital	1,873,147	1,869,339
Accumulated other comprehensive loss	(4,639)	(6,939)
Retained deficit	(1,487,291)	(1,571,302)
Total stockholders’ equity	381,343	291,224
Total liabilities and stockholders’ equity	1,068,436	1,129,265
Series A preferred stock
Stockholders’ equity:
Preferred Stock	0	0
Common stock
Stockholders’ equity:
Common Stock	126	126
Nonvoting Common Stock
Stockholders’ equity:
Common Stock	$ 0	$ 0