BUSINESS REORGANIZATION EXPENSES REORGANIZATION EXPENSES BY PLAN (Details) (USD $)	12 Months Ended						1 Months Ended		12 Months Ended
	Dec. 31, 2012 Employee	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 2012 Plan	Dec. 31, 2011 2012 Plan	Dec. 31, 2010 2012 Plan	Jan. 31, 2012 2012 initial approval	Apr. 30, 2012 2012 subsequent approval	Dec. 31, 2012 2006 Plan	Dec. 31, 2011 2006 Plan	Dec. 31, 2010 2006 Plan	Dec. 31, 2012 2008 Plan	Dec. 31, 2011 2008 Plan	Dec. 31, 2010 2008 Plan	Dec. 31, 2012 2009 Plan	Dec. 31, 2011 2009 Plan	Dec. 31, 2010 2009 Plan
Restructuring Cost and Reserve [Line Items]
Board approved reorganization plan, amount							$ 1,000,000	$ 10,000,000
Business reorganization expenses	$ 7,782,000	$ 720,000	$ 1,694,000	$ 5,453,000	$ 0	$ 0			$ 2,280,000	$ 739,000	$ 1,393,000	$ 0	$ 0	$ 74,000	$ 49,000	$ (19,000)	$ 227,000
Restructuring and Related Cost, Number of Positions Eliminated	220