FAIR VALUE (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Liabilities
Fair value of long-term obligations	$ 739,000	$ 760,000
Assets and liabilities measured at fair value on recurring basis | Total
Assets
Forward exchange contracts, assets	1,612	2,036
Total assets at fair value	1,612	2,036
Liabilities
Forward exchange contracts, liabilities	2,881	1,197
Total liabilities at fair value	2,881	1,197
Assets and liabilities measured at fair value on recurring basis | Level 2
Assets
Forward exchange contracts, assets	1,612	2,036
Total assets at fair value	1,612	2,036
Liabilities
Forward exchange contracts, liabilities	2,881	1,197
Total liabilities at fair value	$ 2,881	$ 1,197