Condensed Consolidated Statements Of Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
REVENUE	$ 51,351	$ 72,547
EXPENSES:
Depreciation and amortization	29,338	39,384
Cost of sales	39	97
Selling, general and administrative	7,387	8,092
Total operating expenses	36,764	47,573
INCOME FROM OPERATIONS	14,587	24,974
Interest expense, net	(9,315)	(7,219)
Foreign currency exchange gains (losses)	(647)	411
Loss on early extinguishment of debt	(1,504)	0
Other income	1	81
Income before income taxes	3,122	18,247
Provision for income taxes	1,384	3,541
NET INCOME	$ 1,738	$ 14,706