Consolidated Statements Of Operations (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Consolidated Statements Of Operations [Abstract]
REVENUE	$ 218,008	$ 175,556	$ 115,345
EXPENSES:
Depreciation and amortization	142,963	175,592	150,199
Cost of sales	100	97	290
Selling, general and administrative	31,649	31,831	25,090
Total operating expenses	174,712	207,520	175,579
INCOME (LOSS) FROM OPERATIONS	43,296	(31,964)	(60,234)
Interest expense	(35,246)	(41,094)	(41,194)
Interest income	479	558	498
Foreign currency exchange gains (losses)	(726)	441	1,008
Loss on early extinguishment of debt	(7,912)
Gain on sale of marketable securities	2,467	4,188
Other income	250	446	151
Income (loss) before income taxes	2,608	(67,425)	(99,771)
Provision (benefit) for income taxes	392	(4,008)	(2,974)
NET INCOME (LOSS)	$ 2,216	$ (63,417)	$ (96,797)