Segment Information (Reconciliation Of Adjusted Earnings Before Interest, Taxes, Depreciation And Amortization To Net Income Attributable To Controlling Interests) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Information [Abstract]
Adjusted EBITDA									$ 253,936	$ 218,842	$ 189,533
Loss (gain) on disposal of assets									3,224	2,790	1,787
Other expense (income)									(1,616)	(3,150)	(1,830)
Noncontrolling interests									(1,745)	(2,399)	(1,668)
Stock-based compensation expense									16,432	12,290	11,072
Acquisition-related expenses									18,050	15,400	3,332
Other adjustments to cost of ATM operating revenues										8,670
Other adjustment to selling, general, and administrative expenses										505	972
EBITDA									219,591	184,736	175,868
Interest expense, net, including amortization of deferred financing costs and note discount, and redemption cost for early extinguishment of debt									33,812	23,086	22,057
Redemption costs for early extinguishment of debt									9,075
Income tax expense (benefit)									28,174	42,018	27,009
Depreciation and accretion expense									75,622	68,480	61,499
Amortization of intangible assets									35,768	27,336	21,712
Net income attributable to controlling interests and available to common stockholders	$ 5,522	$ 8,064	$ 13,989	$ 9,565	$ 7,467	$ (8,408)	$ 15,327	$ 9,430	$ 37,140	$ 23,816	$ 43,591
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	51.00%								51.00%