Offerings of Common Stock (Details) (USD $)	12 Months Ended			12 Months Ended			1 Months Ended	0 Months Ended		1 Months Ended				12 Months Ended			1 Months Ended	12 Months Ended	1 Months Ended		1 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Jan. 18, 2012	Dec. 31, 2013 Common Stock [Member]	Dec. 31, 2012 Common Stock [Member]	Dec. 31, 2011 Common Stock [Member]	Jan. 18, 2012 Lansdowne Partners Limited Partnership, Greenway Capital Partners and Paragon Associates [Member]	Mar. 05, 2010 Lansdowne Partners Limited Partnership, Greenway Capital Partners and Paragon Associates [Member]	Feb. 02, 2012 Private Placement [Member]	Sep. 30, 2012 Private Placement [Member]	Jan. 18, 2012 March 2010 Private Placement [Member]	Dec. 31, 2013 March 2010 Private Placement [Member]	Dec. 31, 2012 March 2010 Private Placement [Member]	Dec. 31, 2012 February 2012 Private Placement [Member]	Dec. 31, 2012 September 2012 Private Placement [Member]	Sep. 30, 2012 September 2012 Private Placement [Member]	Dec. 31, 2013 December 2013 Underwritten Public Offering [Member]	Dec. 31, 2013 December 2013 Underwritten Public Offering [Member]	Sep. 30, 2013 September 2013 Registered Direct Offering [Member]	Sep. 20, 2013 September 2013 Registered Direct Offering [Member]	Aug. 23, 2013 Pathwork Purchase Agreement [Member]
Subsidiary, Sale of Stock [Line Items]
Stock Issued During Period, Shares, New Issues								3,005,349	5,257,267	8,000,000	600,769						4,464,443		932,805
Share Price																	$ 1.20	$ 1.20		$ 2.05	$ 1.96
Common stock issued, price per share								$ 1.31	$ 1.50	$ 1.10
Net proceeds from issuance of common stock	$ 6,571,324	$ 16,452,538								$ 8,800,000							$ 5,357,332	$ 4,800,000	$ 1,912,250
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		5,500,000	11,775,724	7,854,682		3,879,403	7,885,900	8,800,000		0	3,092,396	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				(4,561,847)	(9,758,676)		3,658,676							3,100,000	3,000,000
Shares classified outside of stockholders' equity			5	5,000,000	9,561,847	6,063,256									5,000,000	8,000,000
Common stock Offering Costs	180,790																			1,700,000
Stock Issued During Period, Shares, Purchase of Assets																					500,000
Stock Issued During Period, Value, Purchase of Assets																					980,000
Payments to Acquire Property, Plant, and Equipment, Total	$ 200,000	$ 0																			$ 200,000
Underwriting Discount Percentage																	5.00%