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Accrued And Other Liabilities (Schedule Of Accrued Liabilities) (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Accrued And Other Liabilities [Abstract]    
Compensation and benefits $ 20,256 $ 22,771
Vendor accruals 8,531 8,231
Accrued professional fees 538 810
Accrued taxes 9,887 9,831
Royalties payable 2,417 2,092
Accrued interest 112 39
Accrued earnouts related to acquisitions 3,971 3,238
Accrued other 3,024 2,956
Total $ 48,736 $ 49,968