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Commitments And Contingencies (Narrative) (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Commitments and Contingencies [Line Items]      
Operating Leases, Rent Expense, Net $ 9,700,000us-gaap_OperatingLeasesRentExpenseNet $ 7,200,000us-gaap_OperatingLeasesRentExpenseNet $ 6,700,000us-gaap_OperatingLeasesRentExpenseNet
Asset Retirement Obligation 55,136,000us-gaap_AssetRetirementObligation 63,831,000us-gaap_AssetRetirementObligation 44,696,000us-gaap_AssetRetirementObligation
ATM and equipment [Member]      
Commitments and Contingencies [Line Items]      
Purchase Commitment, Remaining Minimum Amount Committed 6,300,000us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted
/ us-gaap_PurchaseCommitmentExcludingLongtermCommitmentAxis
= catm_AtmAndEquipmentMember		    
Minimum service requirements [Member]      
Commitments and Contingencies [Line Items]      
Purchase commitment remaining period 4 years    
Purchase Commitment, Remaining Minimum Amount Committed 4,000,000us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted
/ us-gaap_PurchaseCommitmentExcludingLongtermCommitmentAxis
= catm_MinimumServiceRequirementsMember		    
U.S. [Member] | ATM-related goods [Member]      
Commitments and Contingencies [Line Items]      
Purchase Commitment, Remaining Minimum Amount Committed $ 13,800,000us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted
/ us-gaap_PurchaseCommitmentExcludingLongtermCommitmentAxis
= catm_AtmRelatedGoodsMember
/ us-gaap_StatementGeographicalAxis
= country_US