CAPITAL STOCK, Allocated Share-Based Compensation Expense (Details) (USD $)	3 Months Ended		9 Months Ended	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
TimeBasedStockOptionsAndRestrictedStockUnitAwardsAccelerationExpense	$ 2,200,000		$ 1,100,000
ForfeitureOfPerformanceBasedOptionsAndRestrictedStockUnitsReducedExpense			100,000	303,229
Stock-Based Compensation Expense [Abstract]
Allocated share-based compensation expense				6,917,000	11,432,000	12,609,000
NetBenefitOfAccelerationsAndForfeituresOperatingExpense		33,438		72,267
Time Based Stock Options And Restricted Stock Unit Awards Acceleration, Number Of Executives			2	4
Expected future amortization of unrecognized compensation cost [Abstract]
Total unrecognized compensation cost related to non-vested stock-based compensation awards				7,000,000
2012				5,000,000
2013				2,000,000
2014				1,000,000
Weighted-average recognition period of total unrecognized compensation cost (in years)				1 year 0 months 18 days
Cost of Products Revenues [Member]
Stock-Based Compensation Expense [Abstract]
Allocated share-based compensation expense				360,000	410,000	487,000
Cost of Services Revenues [Member]
Stock-Based Compensation Expense [Abstract]
Allocated share-based compensation expense				436,000	582,000	714,000
Research and Development Expense [Member]
Stock-Based Compensation Expense [Abstract]
Allocated share-based compensation expense				582,000	986,000	1,638,000
Marketing and Selling Expense [Member]
Stock-Based Compensation Expense [Abstract]
Allocated share-based compensation expense				1,778,000	3,754,000	4,306,000
General and Administrative Expense [Member]
Stock-Based Compensation Expense [Abstract]
Allocated share-based compensation expense				3,761,000	5,700,000	5,464,000
Performance Based [Member]
Stock-Based Compensation Expense [Abstract]
Allocated share-based compensation expense				$ 900,000	$ 2,700,000	$ 2,100,000