Sale of Common Stock (Details) (USD $)	6 Months Ended			0 Months Ended	1 Months Ended	0 Months Ended	1 Months Ended	6 Months Ended	1 Months Ended					3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012	Mar. 05, 2010 Lansdowne Partners Limited Partnership, Greenway Capital Partners and Paragon Associates [Member]	Jan. 18, 2012 Lansdowne Partners Limited Partnership, Greenway Capital Partners and Paragon Associates [Member]	Feb. 02, 2012 Private Placement [Member]	Sep. 30, 2012 Private Placement [Member]	Jun. 30, 2013 Private Placement [Member]	Jan. 18, 2012 March 2010 Private Placement [Member]	Jun. 30, 2013 March 2010 Private Placement [Member]	Dec. 31, 2012 March 2010 Private Placement [Member]	Jun. 30, 2013 February 2012 Private Placement [Member]	Dec. 31, 2012 February 2012 Private Placement [Member]	Dec. 31, 2012 September 2012 Private Placement [Member]	Jun. 30, 2013 September 2012 Private Placement [Member]
Subsidiary, Sale of Stock [Line Items]
Common stock shares issued				3,005,349		5,257,267	8,000,000
Common stock issued, price per share				$ 1.31		$ 1.50	$ 1.10
Net proceeds from issuance of common stock	$ 0	$ 7,664,965					$ 8,800,000
Net proceeds from issuance of shares in Private Placement				3,879,403		7,822,000
Registration statement filing period after closing of Private Placement				45 days		90 days	45 days
Registration statement effective period after closing of Private Placement				120 days		180 days	180 days
Number of shares included in a registration statement to be registered with the SEC				3,005,349
Common stock classified outside of stockholders equity (deficit)	$ 5,500,000		$ 11,775,724	$ 3,879,403		$ 7,885,900				$ 0	$ 3,092,396	$ 0	$ 3,183,328	$ 5,500,000
Percentage of shares purchased required to be held for board observer designation right							50.00%
Shares of common stock reclassified to equity					3,658,676			5,000,000	600,769					3,000,000
Shares classified outside of stockholders' equity							8,000,000								5,000,000