INCOME TAXES (Schedule Of Provision For Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal	$ 13,700	$ 46,665	$ 10,330
State	2,503	2,301	2,124
Foreign	6,113	5,205	3,666
Total current	22,316	54,171	16,120
Deferred:
Federal	(3,400)	1,282	(5,524)
State	(1,751)	(394)	695
Foreign	(1,323)	(1,239)	(2,020)
Total deferred	(6,474)	(351)	(6,849)
Provision for income taxes	$ 15,842	$ 53,820	$ 9,271