Condensed Consolidated Balance Sheets (USD $)	Jun. 30, 2013	Dec. 31, 2012
ASSETS
Cash and cash equivalents	$ 22,378,932	$ 22,676,668
Interest receivable	182	330
Prepaid and other current assets	27,606	6,040
Total current assets	22,406,720	22,683,038
Investment in other ventures	193,438	193,812
Patents, net	75,453	118,669
Total assets	22,675,611	22,995,519
LIABILITIES AND STOCKHOLDERS' EQUITY
Accrued expenses and other current liabilities	14,038	91,017
Total current liabilities	14,038	91,017
Commitments
Stockholders' equity:
Common stock	132,857	132,857
Additional paid-in capital	59,847,443	59,847,443
Accumulated deficit	(37,018,652)	(36,775,723)
Treasury stock - at cost	(300,075)	(300,075)
Total stockholders' equity	22,661,573	22,904,502
Total liabilities and stockholders' equity	$ 22,675,611	$ 22,995,519