Segment Information (Tables)

9 Months Ended

Sep. 30, 2014

Segment Reporting [Abstract]

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

The following tables set forth the Company's North American & European Operations and Australian Operations for the three and nine months ended September 30, 2014 and 2013 (dollars in thousands):

	Three Months Ended September 30, 2014						Three Months Ended September 30, 2013
	North American & European Operations		Australian Operations		Total Operations		North American & European Operations		Australian Operations		Total Operations
Operating revenues	$	351,065	$	81,478	$	432,543	$	319,079	$	82,298	$	401,377
Income from operations	$	100,507	$	22,609	$	123,116	$	77,024	$	24,717	$	101,741
Depreciation and amortization	$	33,205	$	7,072	$	40,277	$	30,704	$	6,630	$	37,334
Interest expense	$	10,118	$	2,536	$	12,654	$	12,473	$	3,556	$	16,029
Interest income	$	32	$	50	$	82	$	926	$	66	$	992
Provision for income taxes	$	31,001	$	5,944	$	36,945	$	17,287	$	4,944	$	22,231
Expenditures for additions to property & equipment, net of grants from outside parties	$	73,240	$	7,661	$	80,901	$	31,277	$	8,954	$	40,231

	Nine Months Ended September 30, 2014						Nine Months Ended September 30, 2013
	North American & European Operations		Australian Operations		Total Operations		North American & European Operations		Australian Operations		Total Operations
Operating revenues	$	982,496	$	240,889	$	1,223,385	$	935,390	$	241,585	$	1,176,975
Income from operations	$	240,725	$	67,375	$	308,100	$	213,940	$	71,418	$	285,358
Depreciation and amortization	$	94,824	$	21,306	$	116,130	$	85,503	$	20,215	$	105,718
Interest expense	$	33,843	$	10,266	$	44,109	$	41,566	$	11,786	$	53,352
Interest income	$	1,126	$	231	$	1,357	$	2,730	$	255	$	2,985
Provision for income taxes	$	75,465	$	16,947	$	92,412	$	6,617	$	15,900	$	22,517
Expenditures for additions to property & equipment, net of grants from outside parties	$	212,637	$	15,541	$	228,178	$	105,203	$	41,354	$	146,557

Property and Equipment by Segment [Table Text Block]

The following table sets forth the property and equipment recorded in the consolidated balance sheets for the Company's North American & European Operations and Australian Operations as of September 30, 2014 and December 31, 2013 (dollars in thousands):

	September 30, 2014						December 31, 2013
	North American & European Operations		Australian Operations		Total Operations		North American & European Operations		Australian Operations		Total Operations
Property and equipment, net	$	3,239,823	$	535,304	$	3,775,127	$	2,883,452	$	557,292	$	3,440,744