COMMITMENTS AND CONTINGENCIES (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended						0 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Supply Commitment 2013 [Member]	Dec. 31, 2012 Supply Commitment 2014 [Member]	Dec. 31, 2012 Supply Commitment 2015 [Member]	Mar. 04, 2013 New York State Department Of Taxation And Finance [Member]	Dec. 31, 2010 New Jersey Division Of Taxation [Member]
COMMITMENTS AND CONTINGENCIES [Abstract]
Rent expense under operating leases	$ 11,100	$ 11,400	$ 12,300
Contractual obligations previously expensed through restructuring	1,200	1,600	1,700
Increase in asset retirement obligation as a result of increased remediation costs	200
Asset retirement liability	1,200	1,000
Future minimum lease payments related to restructuring efforts	800
Income Tax Contingency [Line Items]
Tax assessed							4,300	6,200
Contingent taxes owed							1,900	2,400
Contingent interest and penalties owed							2,400	3,800
Supply Commitment [Line Items]
Future minimum purchase agreement amount				7,400	2,000	300
Minimum purchase requirement for prior year	$ 28,500	$ 51,000	$ 32,900