INCOME TAXES (PROVISION TABLE) (DETAILS) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current provision
Federal current									$ (373)	$ 4,094	$ (699)
State current									372	1,829	270
Foreign current									14,447	4,764	13,957
Total current provision									14,446	10,687	13,528
Deferred provision (benefit)
Federal deferred									(2,390)	(1,895)	10,148
State deferred									103	1,085	423
Foreign deferred									704	10,127	(1,057)
Deferred Income Tax Expense (Benefit), Total									(1,583)	9,317	9,514
Income Tax Expense (Benefit), Total	$ 6,196	$ (813)	$ 2,952	$ 4,528	$ 6,566	$ 1,192	$ 7,841	$ 4,405	$ 12,863	$ 20,004	$ 23,042