CAPITAL STOCK, Allocated Share-Based Compensation Expense (Details) (USD $)	12 Months Ended
	Dec. 31, 2011 Y	Dec. 31, 2010	Dec. 31, 2009
Stock-Based Compensation Expense [Abstract]
Allocated share-based compensation expense	$ 14,619,000	$ 13,921,000	$ 13,394,000
Expected future amortization of unrecognized compensation cost [Abstract]
Total unrecognized compensation cost related to non-vested stock-based compensation awards	22,000,000
2012	10,000,000
2013	7,000,000
2014	4,000,000
2015	1,000,000
Weighted-average recognition period of total unrecognized compensation cost (in years)	1.46
Cost of Products Revenues [Member]
Stock-Based Compensation Expense [Abstract]
Allocated share-based compensation expense	419,000	724,000	859,000
Cost of Services Revenues [Member]
Stock-Based Compensation Expense [Abstract]
Allocated share-based compensation expense	764,000	1,054,000	1,154,000
Research and Development Expense [Member]
Stock-Based Compensation Expense [Abstract]
Allocated share-based compensation expense	1,634,000	2,227,000	2,454,000
Marketing and Selling Expense [Member]
Stock-Based Compensation Expense [Abstract]
Allocated share-based compensation expense	4,730,000	4,109,000	3,596,000
General and Administrative Expense [Member]
Stock-Based Compensation Expense [Abstract]
Allocated share-based compensation expense	$ 7,072,000	$ 5,807,000	$ 5,331,000