Stock-based compensation (Details Textual) (USD $)	0 Months Ended
	Jan. 08, 2015	Apr. 13, 2015	Mar. 31, 2015	Dec. 31, 2014
Common Stock Value To Be Issued			$ 12,500	$ 12,500
Stock Issued During Period, Shares, New Issues	83,334
Stock Issued During Period Per Share Value Of New Issues	$ 0.15
Stock Issued During Period, Value, New Issues	12,500
Subsequent Event [Member]
Stock Issued During Period, Shares, New Issues		83,334
Stock Issued During Period Per Share Value Of New Issues		$ 0.15
Stock Issued During Period, Value, New Issues		12,500
Two Directors [Member]
Common Stock Value To Be Issued			$ 12,500
Stock Issued During Period, Shares, New Issues	41,667
Two Directors [Member] | Subsequent Event [Member]
Stock Issued During Period, Shares, New Issues		41,667