VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

Dec. 31, 2012

Valuation and Qualifying Accounts [Abstract]

VALUATION AND QUALIFYING ACCOUNTS

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS
		Balance at		Additions			Balance at
		Beginning of		Charged to Cost	Deductions		End of
		Period		and Expenses	(Describe)		Period
	December 31, 2012
	Deducted from liability accounts:
	Product warranty reserve		1,210,909	4,269,763	2,809,263	(a)	2,671,409
	December 31, 2011
	Deducted from liability accounts:
	Product warranty reserve		862,480	1,387,177	1,038,748	(a)	1,210,909
(a)	Cost of warranty performed