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Commitments And Contingencies (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
USD ($)
lawsuit
Jun. 30, 2014
USD ($)
Jun. 30, 2015
USD ($)
Jun. 30, 2014
USD ($)
Dec. 31, 2014
USD ($)
Commitments And Contingencies [Abstract]          
Rent expense under operating leases $ 3,408 $ 2,598 $ 6,612 $ 4,910  
Supply commitments, printer assembly 63,849   63,849   $ 56,620
Accrued liability recorded for earnouts $ 9,582   9,582   $ 9,155
Estimated Amount Owed To Subsidiary Owners If Future Earning Levels Are Met     $ 8,872    
Shareholder class action lawsuits, number | lawsuit 2