BASIS OF PRESENTATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended		12 Months Ended		33 Months Ended		0 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2013	Apr. 30, 2013 Brandon Facility	Aug. 23, 2012 Credit facility	Sep. 30, 2013 Credit facility
Description of Business
Revenue as a percentage of sales associated with new wind turbine installations				67.00%	64.00%
BASIS OF PRESENTATION
Cash and cash equivalents	$ 22,826			$ 22,826	$ 2,721	$ 516	$ 13,340	$ 22,826
Increase in liquidity as a result of the sale of manufacturing facility									8,000
Line of credit facilities, term of credit agreements										3 years
Maximum borrowing capacity										20,000
Maximum borrowing capacity of the face value of eligible receivables (as a percent)										85.00%
Maximum percentage of book value of inventories that may be financed										50.00%
Current borrowing capacity											15,480
Liquidity
Cash and cash equivalents and short-term investments	23,693			23,693		516		23,693
Minimum period for which liquidity needs will be met from current cash resources and cash to be generated from operations over the next twelve months				12 months
Obligation to make principal payments on outstanding debt during the next twelve months	342			342				342
Restructuring charges incurred	1,691	(1,111)	1,967			5,092	874	8,513
Expected cost to be incurred to implement the restructuring plan				13,316
Non-cash expenditure expected to be incurred				$ 5,400