Asset Retirement Obligations (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014
Asset Retirement Obligations [Abstract]
Asset Retirement Obligation assets, useful life	5 years
Asset Retirement Obligation Revision Of Estimate, Depreciation and Accretion Impact	$ 1.0

Asset Retirement Obligation Revision Of Estimate, Depreciation and Accretion Impact

No definition available.

Name:	catm_AssetRetirementObligationRevisionOfEstimateDepreciationAndAccretionImpact
Namespace Prefix:	catm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration