Stock-based compensation (Tables)

9 Months Ended

Sep. 30, 2016

	Number of shares available for grant		Total options outstanding			Weighted Average Exercise Price		Aggregate Intrinsic Value
Balance at December 31, 2015		29,485		43,071		$	0.48	$	17,867
Exercised		-		(20	)		0.15		-
Granted		-		-			-		-
Cancelled		18,400		(18,400	)
Balance at September 30, 2016		47,885		24,651		$	0.31	$	7,619