Net loss per share (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share Reconciliation [Abstract]
Numerator - basic and diluted net loss	$ (1,851)	$ (1,957)	$ (3,906)	$ (3,686)
Weighted average common shares outstanding, basic and diluted	232,560	225,824	232,560	225,803
Net loss per share - bacis and diluted	$ (0.01)	$ (0.01)	$ (0.02)	$ (0.02)