Condensed Consolidated Statements Of Operations (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
REVENUE	$ 72,547	$ 59,496
EXPENSES:
Depreciation and amortization	39,384	42,414
Cost of sales	97	16
Selling, general and administrative	8,092	7,565
Total operating expenses	47,573	49,995
INCOME FROM OPERATIONS	24,974	9,501
Interest expense, net	(7,219)	(10,159)
Foreign currency exchange gains	411	232
Gain on sale of marketable securities	0	1,487
Other income	81	49
Income before income taxes	18,247	1,110
Provision for income taxes	3,541	599
NET INCOME	$ 14,706	$ 511