Offerings of Common Stock (Schedule of Common Stock Classified Outside of Stockholders' Equity) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Amount
Beginning balance	$ 7,854,682
Ending balance	11,775,724
Offering costs offset against paid-in capital	180,790
Common Stock [Member]
Number of Shares
Beginning balance	6,063,256	6,063,256
Issuance of common stock classified outside of stockholders' equity (deficit)	13,257,267
Reclassification to stockholders' equity (deficit)	(9,758,676)
Ending balance	9,561,847	6,063,256
Amount
Beginning balance	7,854,682	7,854,682
Issuance of common stock classified outside of stockholders' equity (deficit)	16,633,328
Reclassification to stockholders' equity (deficit)	(12,712,286)
Ending balance	$ 11,775,724	$ 7,854,682