Capital Stock, Financing and Liquidity (Details Textual) - USD ($)			1 Months Ended		6 Months Ended
	May 12, 2016	Dec. 15, 2015	May 19, 2016	Feb. 18, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	150,000
Common Stock, Shares, Issued					17,097,420		14,101,395
Payments of Stock Issuance Costs				$ 1,100,000
Proceeds from Issuance or Sale of Equity	$ 349			9,700,000
Proceeds From Issuance Of Stock To Underwriters				$ 8,600,000
Retained Earnings (Accumulated Deficit)					$ (29,923,000)		$ (24,739,000)
Proceeds from Issuance of Common Stock					$ 349,000	$ 3,237,000
Stock Issued During Period, Value, New Issues	$ 371
Purchase Agreement [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues			2,836,880
Shares Issued, Price Per Share			$ 1.7625
Proceeds from Issuance or Sale of Equity			$ 4,600,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights			1,418,440
Class of Warrant or Right, Exercise Price of Warrants or Rights			$ 1.7625
Stock Issued During Period, Value, New Issues			$ 5,000,000
Class of Warrant or Right, Expiration Date					May 19, 2021
Class of Warrant or Right, Date from which Warrants or Rights Exercisable					Nov. 19, 2016
Purchase Agreement [Member] | Placement Agent [Member]
Class of Stock [Line Items]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights			141,844
Class of Warrant or Right, Exercise Price of Warrants or Rights			$ 1.7625
Aspire Purchase Agreement [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues					500,000
Shares Issued, Price Per Share					$ 2.00
Stock Issued During Period, Shares, Issued for Services		150,000
Proceeds from Issuance of Common Stock					$ 900,000
Stock Purchase Agreement Shares Registered		2,688,933
Common Stock, Capital Shares Reserved for Future Issuance		2,038,933
Stock Purchase Agreement Description					any trading day on which the closing sale price of the Companys common stock exceeds $0.50, the Company had the right, in its sole discretion, to direct Aspire Capital to purchase up to 150,000 shares of the Companys common stock per trading day, at a per share price calculated by reference to the prevailing market price of the Companys common stock. In addition, the Company had the right, from time to time in its sole discretion, to sell Aspire Capital an amount of stock equal to up to 30% of the aggregate shares of the Companys common stock traded on the Nasdaq Capital Market on the next trading day, subject to a maximum number of shares which the Company may determine and a minimum trading price.
Stock Purchase Agreement Value Committed		$ 15,000,000
Common Stock [Member]
Class of Stock [Line Items]
Common Stock, Shares, Issued				2,070,000
Shares Issued, Price Per Share				$ 1.75
Conversion of Stock, Shares Issued						1,026,395
Series B Convertible Preferred Stock [Member]
Class of Stock [Line Items]
Convertible Preferred Stock, Shares Reserved for Future Issuance				695,857
Shares Issued, Price Per Share				$ 8.75
Preferred Stock, Par or Stated Value Per Share				$ 0.01
Series B Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock, Par or Stated Value Per Share					$ 0.01		$ 0.01
Conversion of Stock, Shares Converted						205,279