Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 15,131,671	$ 8,049,237
Accounts receivable, net of allowance for doubtful accounts of $12,536 at December 31, 2013 and 2012	0	669,310
Prepaid expenses and other	279,773	189,465
Total current assets	15,411,444	8,908,012
Property and equipment, net	78,142	52,556
Other assets	17,965	17,427
Total assets	15,507,551	8,977,995
Current liabilities:
Accounts payable	402,456	504,851
Payable to related party	0	86,683
Accrued liabilities	162,710	151,219
Total current liabilities	565,166	742,753
Commitments and Contingencies	0	0
Stockholders' equity:
Convertible preferred stock, $1.00 par value; 5,000,000 shares authorized and 0 shares issued and outstanding at December 31, 2013 and 2012	0	0
Common stock, $.01 par value: 170,000,000 shares authorized at December 31, 2013 and 2012; 27,119,974 and 22,582,938 shares issued and outstanding at December 31, 2013 and 2012, respectively	271,198	225,828
Additional paid-in capital	421,775,039	409,374,905
Treasury stock, at cost: 79,545 shares held at December 31, 2013 and 2012	(8,034,244)	(8,034,244)
Accumulated deficit	(399,069,608)	(393,331,247)
Total stockholders' equity	14,942,385	8,235,242
Total liabilities and stockholders' equity	$ 15,507,551	$ 8,977,995