Accrued and Other Liabilities (Schedule Of Accrued Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Payables and Accruals [Abstract]
Compensation and benefits	$ 21,139	$ 23,787
Accrued taxes	9,840	17,246
Vendor accruals	9,734	6,895
Payable to owners of redeemable noncontrolling interests	10,000	0
Arbitration awards	2,256	2,256
Product warranty liability	2,908	3,788
Accrued other	4,223	2,219
Accrued professional fees	1,545	1,657
Royalties payable	1,450	1,417
Total	$ 63,095	$ 59,265