Business, Liquidity and Organization (Details) - USD ($)	Jun. 30, 2015	Mar. 09, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Business, Liquidity and Organization [Abstract]
Expected severance cost		$ 2,000,000
Accumulated deficit	$ (221,160,857)		$ (220,283,320)
Cash and cash equivalents	18,411,839		18,643,351	$ 11,265,082	$ 10,480,979
Accounts receivable (billed and unbilled)	1,200,000
Liabilities current	3,335,486		2,581,789
Additional Common Stock Aggregate Gross Sales available under the controlled equity offering arrangement	3,000,000
Short-term debt	$ 249,491		$ 746,146