Supplemental Disclosures of Cash Flows Information

9 Months Ended

12 Months Ended

Sep. 30, 2012

Dec. 31, 2011

Supplemental Cash Flow Elements [Abstract]

Supplemental Disclosures of Cash Flows Information

13. Supplemental Disclosures of Cash Flows Information

The following represents required supplemental disclosures of cash flows information and non-cash financing and investing activities which occurred during the nine months ended September 30, 2012 and 2011:

	September 30, 2012			September 30, 2011
Stock-based compensation accrual impact, net		$	(115)	$	(211,614)
Change in unrealized gain on available-for-sale securities		-		18,502
Transfer of investment in leased property to inventory		-		263,239
Transfer of assets held for sale to inventory		-		1,000,000

16. Supplemental Disclosures of Cash Flows Information

The following represents required supplemental disclosures of cash flows information and non-cash financing and investing activities which occurred during the years ended December 31, 2011, 2010 and 2009:

	2011		2010		2009
Stock-based compensation accrual impact, net	$	395,257	$	707,802	$	480,145
Change in unrealized loss/gain on available for sale securities	18,502		(114,300)		(131,308)
Cash paid for interest	12,634		471,386		999,665
Transfer of property, plant and equipment to assets held for sale	-		768,779		-
Transfer of investment in leased property to inventory	253,786		-		-