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RESTRUCTURINGS (Details) (USD $)	3 Months Ended	9 Months Ended					0 Months Ended	6 Months Ended					3 Months Ended	6 Months Ended	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Employee Severance And Other Benefits	Sep. 30, 2013 Asset Write Downs	Sep. 30, 2013 Facility Related Charges	Apr. 25, 2013 April 2013 Restructuring position	Sep. 30, 2013 April 2013 Restructuring	Sep. 30, 2013 April 2013 Restructuring One-time termination benefits	Sep. 30, 2013 April 2013 Restructuring Asset Write Downs	Sep. 30, 2013 April 2013 Restructuring Facility Related Charges	Sep. 30, 2013 April 2013 Restructuring One-time termination benefits and facility-related charges	Dec. 31, 2012 December 2012 Restructuring	Jun. 30, 2013 December 2012 Restructuring	Sep. 30, 2013 December 2012 Restructuring	Dec. 03, 2012 December 2012 Restructuring position	Nov. 14, 2011 November 2011 Restructuring position
RESTRUCTURINGS
Number of full-time positions eliminated, inception to date							20									43	66
Aggregate estimated restructuring charges							$ 1,500,000
Expected cash payments							1,250,000
Proceeds from sales of property and equipment		1,116,000	38,000								1,000,000
Outstanding restructuring liability
Accrual balance at the beginning of the period		1,972,000		1,972,000
Restructuring charges	116,000	1,032,000		716,000	200,000	116,000		940,000	624,000	200,000	116,000		2,702,000	92,000	2,794,000
Stock-based compensation expense related to extension of the post-termination exercise period									28,000
Cash payments		(2,469,000)		(2,373,000)		(96,000)						(571,000)
Adjustments or non-cash credits, including stock-based compensation expense		(374,000)		(174,000)	(200,000)
Accrual balance at the end of the period	$ 161,000	$ 161,000		$ 141,000		$ 20,000

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