OTHER ASSETS (Details Textual) (USD $)	3 Months Ended	6 Months Ended				3 Months Ended
	Jun. 30, 2013	Jun. 30, 2013	Jul. 03, 2013	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Commonwealth of Massachusetts [Member]	Dec. 31, 2012 Commonwealth of Massachusetts [Member]	Jun. 30, 2013 Solar Fund [Member]
Termination Fee								$ 1,300,000
Non-Recourse Debt								800,000
Contingent Interest Related To Termination								300,000
Contingent Liability	500,000	500,000						1,300,000
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage		33.30%
Proceeds from Income Tax Refunds						1,800,000
Liability for Uncertain Tax Positions, Current	700,000	700,000			2,300,000		1,600,000
Debt Instrument, Unpaid Principal Balance	695,700,000	695,700,000
Unamortized Debt Issuance Expense	3,779,000	3,779,000	5,500,000		10,199,000
Unrecognized Tax Benefits				1,600,000
Interest and Debt Expense	5,500,000
Investments	$ 156,723,000	$ 156,723,000			$ 161,433,000			$ 5,800,000