Condensed Consolidated Statements Of Operations (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
REVENUE	$ 46,028	$ 35,545	$ 118,575	$ 95,041
EXPENSES:
Depreciation and amortization	29,837	23,246	69,221	65,660
Cost of sales	151	39	248	55
Selling, general and administrative	7,705	7,925	15,797	15,490
Total operating expenses	37,693	31,210	85,266	81,205
INCOME FROM OPERATIONS	8,335	4,335	33,309	13,836
Interest expense, net	(7,253)	(10,265)	(14,472)	(20,424)
Foreign currency exchange gains (losses)	(426)	225	(15)	457
Gain on sale of marketable securities	230	980	230	2,467
Other income	402	115	483	164
Income (loss) before income taxes	1,288	(4,610)	19,535	(3,500)
Provision for income taxes	18	416	3,559	1,015
NET INCOME (LOSS)	$ 1,270	$ (5,026)	$ 15,976	$ (4,515)