Stock-based compensation (Details Textual) - USD ($)	3 Months Ended			6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock Issuance Date	Jul. 10, 2015	Apr. 13, 2015	Jan. 08, 2015
Common Stock Value To Be Issued	$ 12,500		$ 12,500	$ 12,500
Stock Issued During Period, Shares, New Issues	83,334	83,334	83,334
Stock Issued During Period Per Share Value Of New Issues	$ 0.15	$ 0.15	$ 0.15
Stock Issued During Period, Value, New Issues	$ 12,500	$ 12,500	$ 12,500
Two Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Common Stock Value To Be Issued	$ 12,500			$ 12,500
Stock Issued During Period, Shares, New Issues	41,667	41,667	41,667
Director One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares				25,000