Stockholders' Equity (Details Textual) (USD $)	9 Months Ended				1 Months Ended		1 Months Ended			3 Months Ended	9 Months Ended	1 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Oct. 29, 2014 B. Riley Co., LLC the Underwriter” and Craig-Hallum Co-Manager” [Member] Subsequent Event [Member]	Oct. 28, 2014 Public Offering [Member] B. Riley Co., LLC the Underwriter” and Craig-Hallum Co-Manager” [Member] Subsequent Event [Member]	Oct. 23, 2014 Public Offering [Member] B. Riley Co., LLC the Underwriter” and Craig-Hallum Co-Manager” [Member] Subsequent Event [Member]	Mar. 03, 2014 Public Offering [Member] B. Riley Co., LLC the Underwriter” [Member] Subsequent Event [Member]	Feb. 27, 2014 Public Offering [Member] B. Riley Co., LLC the Underwriter” [Member] Subsequent Event [Member]	Feb. 26, 2014 Public Offering [Member] B. Riley Co., LLC the Underwriter” [Member] Subsequent Event [Member]	Sep. 30, 2014 Employee Stock Option [Member]	Sep. 30, 2014 Employee Stock Option [Member]	Oct. 28, 2014 Common Stock [Member] Public Offering [Member] B. Riley Co., LLC the Underwriter” and Craig-Hallum Co-Manager” [Member] Subsequent Event [Member]	Mar. 03, 2014 Common Stock [Member] Public Offering [Member] B. Riley Co., LLC the Underwriter” [Member] Subsequent Event [Member]
Stockholders' Equity [Line Items]
Common Stock, Shares Authorized	110,000,000		110,000,000
Common Stock, Par Or Stated Value Per Share	$ 0.001		$ 0.001			$ 0.001			$ 0.001
Common Stock, Shares, Outstanding	73,425,328		63,907,357
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized						6,896,552			7,876,497
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized								1,181,475
Stock Issued During Period, Shares, New Issues					6,896,552		9,057,972
Sale of Stock, Price Per Share					$ 1.45		$ 1.38
Proceeds from Issuance or Sale of Equity					$ 11,500,000		$ 12,500,000
Proceeds from Issuance of Common Stock	11,425,118	0			10,800,000		11,400,000
Payments for Repurchase of Initial Public Offering												200,000	300,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period										385,000	459,999
Proceeds from Stock Options Exercised	$ 280,425	$ 39,720
Exercise of Over-Allotment Options to Purchase Common Stock				1,034,483