Summary of significant accounting policies (Details 1) - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Cost	$ 2,013,000
Accumulated Amortization	(191,140)
Net balance at March 31, 2016	1,821,860	$ 1,888,814
Trademarks and tradenames
Finite-Lived Intangible Assets [Line Items]
Cost	461,000
Accumulated Amortization	(32,838)
Net balance at March 31, 2016	428,162
Developed technology
Finite-Lived Intangible Assets [Line Items]
Cost	458,000
Accumulated Amortization	(46,607)
Net balance at March 31, 2016	411,393
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Cost	1,094,000
Accumulated Amortization	(111,695)
Net balance at March 31, 2016	$ 982,305