Net loss per share (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share Reconciliation [Abstract]
Numerator - net loss attributable to Common Stockholders	$ (1,791)	$ (1,467)	$ (5,730)	$ (5,154)
Denominator - basic and diluted weighted average number of common shares outstanding	232,646	225,824	232,588	225,810
Net loss per share - bacis and diluted	$ (0.01)	$ (0.01)	$ (0.02)	$ (0.02)