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Commitments And Contingencies (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Commitments And Contingencies [Abstract]      
Rent expense under operating leases $ 3,204us-gaap_OperatingLeasesRentExpenseNet $ 2,311us-gaap_OperatingLeasesRentExpenseNet  
Supply commitments, printer assembly 77,623us-gaap_SignificantSupplyCommitmentRemainingMinimumAmountCommitted   56,620us-gaap_SignificantSupplyCommitmentRemainingMinimumAmountCommitted
Accrued liability recorded for earnouts 9,243us-gaap_BusinessCombinationLiabilitiesArisingFromContingenciesAmountRecognized   9,155us-gaap_BusinessCombinationLiabilitiesArisingFromContingenciesAmountRecognized
Estimated Amount Owed To Subsidiary Owners If Future Earning Levels Are Met $ 8,872ddd_EstimatedAmountOwedToSubsidiaryOwnersIfFutureEarningLevelsAreMet