LIABILITIES FOR DISPOSITIONS AND DISCONTINUED OPERATIONS Analysis of Activity (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Accrual for Environmental Loss Contingencies [Roll Forward]
Balance, beginning of period	$ 76,378	$ 81,695
Expenditures charged to liabilities	(2,498)	(8,570)
Increase to liabilities	22	3,253
Balance, end of period	73,902	76,378
Less: Current portion	(6,446)	(6,835)
Non-current portion	$ 67,456	$ 69,543