Supplemental Disclosures of Cash Flows Information (Tables)

6 Months Ended

Jun. 30, 2012

Supplemental Cash Flow Elements [Abstract]

Schedule Of non-cash financing and investing activities

	June 30, 2012		June 30, 2011
Stock-based compensation accrual impact, net	$	(12,474)	$	(10,021)
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