INCOME TAXES (SOURCES OF PRE-TAX INCOME TABLE) (DETAILS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Sources of pre-tax accounting income
Domestic	$ (6,216)	$ 25,402	$ 20,569
Foreign	56,514	60,487	79,890
Income before income taxes	$ 50,298	$ 85,889	$ 100,459