Accrued And Other Liabilities (Schedule Of Accrued Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Accrued And Other Liabilities [Abstract]
Compensation and benefits	$ 22,249	$ 24,152
Vendor accruals	9,380	12,883
Accrued professional fees	542	491
Accrued taxes	6,684	11,317
Royalties payable	1,717	1,431
Accrued interest	40	42
Accrued earnouts related to acquisitions	2,586	159
Accrued other	3,548	4,224
Total	$ 46,746	$ 54,699