INCOME TAXES (Net Deferred Tax Liability) (Details) - USD ($) $ in Thousands		Dec. 31, 2015	Dec. 31, 2014
INCOME TAXES [Abstract]
Current assets	[1]	$ 0	$ (39,726)
Noncurrent liabilities		681,096	691,137
Net deferred tax liability		$ 681,096	$ 651,411

[1] As discussed in Note 1, we early adopted ASU 2015-17 on a prospective basis as of December 31, 2015. Thus, all deferred income taxes as of December 31, 2015 are classified as noncurrent resulting in a $44,464 thousand decrease in current assets with a corresponding decrease in noncurrent liabilities.