Stock-Based Compensation (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Stock-Based Compensation (Textual)
Share compensation expense	$ 72,000	$ 255,000	$ 1,075,000
Weighted average grant date fair value		$ 0.67	$ 1.24
Options granted to purchase of common stock to employee			90,000
Options granted to purchase of common stock to board members		25,000	515,000
Stock based compensation options granted to purchase of common stock to employee fair value		$ 17,000	$ 800,000
Proceeds from exercise of warrants
Term of stock options description	Stock options granted under the 2006 and 2015 Plans are exercisable over a maximum term of ten years from the date of grant, vest in various installments over a one to four-year period and have exercise prices reflecting the market value of the shares of common stock on the date of grant.
Swedish employees [Member]
Stock-Based Compensation (Textual)
Number of shares, options granted			265,000
Stock Options [Member]
Stock-Based Compensation (Textual)
Number of shares, options granted		25,000	605,000
Share compensation expense	$ 72,000	$ 255,000	$ 1,075,000
Weighted average grant date fair value	$ 4.21
Vesting period		1 year 1 month 6 days
2015 Plan [Member] | Stock Options [Member]
Stock-Based Compensation (Textual)
Number of shares, options granted	0
Aggregate shares of common stock, shares			2,100,000
Warrant [Member]
Stock-Based Compensation (Textual)
Number of shares, options granted		4,313,676
Weighted average grant date fair value	$ 0.62
Vesting period		1 year 1 month 6 days