INCOME TAXES INCOME TAXES - Narrative (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010		Dec. 31, 2009
Operating Loss Carryforwards [Line Items]
Undistributed earnings of foreign subsidiaries	$ 900,000
Unrecognized tax benefits	25,900,000	26,200,000	28,600,000	[1]	29,100,000	[1]
Unrecognized tax benefits that would impact effective tax rate	700,000
Decrease in unrecognized tax benefits within the next twelve months	400,000
Unrecognized tax benefits, interest on income taxes expense	100,000	200,000	300,000
Unrecognized tax benefits, interest on income taxes accrued	200,000	300,000
Federal
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	441,200,000
State
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	89,800,000
Canada | Foreign
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	28,600,000
JAPAN | Foreign
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	1,400,000
Germany | Foreign
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	27,600,000
Research Tax Credit Carryforward | Federal
Operating Loss Carryforwards [Line Items]
Tax credit carryforward, amount	3,400,000
Research Tax Credit Carryforward | State
Operating Loss Carryforwards [Line Items]
Tax credit carryforward, amount	$ 4,000,000

[1] Unrecognized tax benefits have been revised to increase the 2010 beginning balance by $1.5 million and increase 2011 changes due to expiration of statues of limitations by $0.4 million. These revisions were made to correct previously reported amounts and are not considered material.