STOCKHOLDERS' EQUITY (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Amortization of pension and other post-retirement liability adjustments
Tax Benefit	$ 37,471	$ 29,165	$ 15,718
Net of Tax	65,948	46,585	23,184
Amounts reclassified from accumulated other comprehensive income (loss)
Amortization of pension and other post-retirement liability adjustments
Prior Service Costs	(852)	(2,019)	(3,364)
Actuarial Losses	(6,167)	(2,540)	(9,390)
Loss recognized during settlement	0	(6,509)	0
Total Before Tax	(5,315)	(7,030)	(6,026)
Tax Benefit	(1,929)	(2,714)	(2,410)
Net of Tax	$ (3,386)	$ (4,316)	$ (3,616)