INCOME TAXES (Schedule Of Provision For Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current:
Federal	$ (3,880)	$ 6,644	$ 13,700
State	1,609	1,233	2,503
Foreign	7,057	6,069	6,113
Total current	4,786	13,946	22,316
Deferred:
Federal	(7,202)	(66,466)	(3,400)
State	(3,048)	(758)	(1,751)
Foreign	2,066	(80)	(1,323)
Total deferred	(8,184)	(67,304)	(6,474)
Provision for income taxes	$ (3,398)	$ (53,358)	$ 15,842