STOCKHOLDERS' EQUITY, Allocated Share-Based Compensation Expense (Details) (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Stock-Based Compensation Expense [Abstract]
Allocated share-based compensation expense	$ 3,133,000	$ 4,133,000
Expected future amortization of unrecognized compensation cost [Abstract]
Total unrecognized compensation cost related to non-vested stock-based compensation awards	27,000,000
Cost of Products Revenues [Member]
Stock-Based Compensation Expense [Abstract]
Allocated share-based compensation expense	94,000	139,000
Cost of Services Revenues [Member]
Stock-Based Compensation Expense [Abstract]
Allocated share-based compensation expense	157,000	268,000
Research and Development Expenses [Member]
Stock-Based Compensation Expense [Abstract]
Allocated share-based compensation expense	306,000	472,000
Marketing and Selling Expenses [Member]
Stock-Based Compensation Expense [Abstract]
Allocated share-based compensation expense	1,261,000	1,218,000
General and Administrative Expenses [Member]
Stock-Based Compensation Expense [Abstract]
Allocated share-based compensation expense	$ 1,315,000	$ 2,036,000
Director [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Annualized estimated forfeiture rates	0.00%
Management [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Annualized estimated forfeiture rates	10.00%
Other Employees [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Annualized estimated forfeiture rates	10.00%