Segment and Geographic Area Information (Tables)

12 Months Ended

Dec. 31, 2011

SEGMENT AND GEOGRAPHIC AREA INFORMATION: [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

The following tables set forth our North American & European Operations and Australian Operations for the years ended December 31, 2011, 2010 and 2009 (dollars in thousands).

	December 31, 2011
	North American & European Operations			Australian Operations			Total Operations
Revenues	$	557,621		$	271,475		$	829,096
Income from operations	129,646			62,133			191,779
Depreciation and amortization	47,218			19,263			66,481
Interest expense	(23,171		)	(15,446		)	(38,617		)
Interest income	2,950			293			3,243
Provision for income taxes	26,181			12,350			38,531
Expenditures for additions to property & equipment, net of grants from outside parties	(59,383		)	(96,643		)	(156,026		)

	December 31, 2010
	North American & European Operations			Australian Operations			Total Operations
Revenues	$	494,787		$	135,408		$	630,195
Income from operations	119,902			10,508			130,410
Depreciation and amortization	43,807			7,359			51,166
Interest expense	(21,856		)	(1,291		)	(23,147		)
Interest income	485			1,912			2,397
Provision for income taxes	27,176			2,988			30,164
Expenditures for additions to property & equipment, net of grants from outside parties	(59,153		)	(19,885		)	(79,038		)

	December 31, 2009
	North American & European Operations			Australian Operations			Total Operations
Revenues	$	451,446		$	93,420		$	544,866
Income from operations	84,117			15,205			99,322
Depreciation and amortization	43,219			4,891			48,110
Interest expense	(26,902		)	—			(26,902		)
Interest income	94			971			1,065
Provision for income taxes	11,289			4,627			15,916
Expenditures for additions to property & equipment, net of grants from outside parties	(54,375		)	(9,915		)	(64,290		)

Property and Equipment by Segment [Table Text Block]

The following table sets forth the property and equipment recorded in the consolidated balance sheets as of December 31, 2011 and 2010 (dollars in thousands):

	December 31, 2011			December 31, 2010
	North American & European Operations	Australian Operations	Total Operations	North American & European Operations	Australian Operations	Total Operations
Property & equipment	$1,120,121	$523,468	$1,643,589	$1,000,350	$443,827	$1,444,177

Operating Revenues by Geographic Area [Table Text Block]

Operating revenues for each geographic area for the years ended December 31, 2011, 2010 and 2009 were as follows (dollars in thousands):

	2011				2010				2009
	Amount		% of Total		Amount		% of Total		Amount		% of Total
Operating revenues:
United States	$	478,511	57.7	%	$	434,132	68.9	%	$	403,239	74.0	%
Non-United States:
Australia	271,475		32.7	%	135,408		21.5	%	93,420		17.1	%
Canada	64,155		7.8	%	49,580		7.9	%	38,061		7.0	%
Europe	14,955		1.8	%	11,075		1.7	%	10,146		1.9	%
Total Non-United States:	350,585		42.3	%	196,063		31.1	%	141,627		26.0	%
Total operating revenues	$	829,096	100.0	%	$	630,195	100.0	%	$	544,866	100.0	%

Property and Equipment by Geographic Area [Table Text Block]

Property and equipment for each geographic area as of December 31, 2011 and 2010 were as follows (dollars in thousands):

	2011				2010
	Amount		% of Total		Amount		% of Total
Property and equipment located in:
United States	$	993,665	60.5	%	$	892,295	61.8	%
Non-United States:
Australia	523,468		31.8	%	443,827		30.7	%
Canada	110,719		6.7	%	91,434		6.3	%
Europe	15,737		1.0	%	16,621		1.2	%
Total Non-United States:	649,924		39.5	%	551,882		38.2	%
Total property and equipment	$	1,643,589	100.0	%	$	1,444,177	100.0	%