Income taxes (Tables)

9 Months Ended

Sep. 27, 2013

Income taxes [Abstract]

Income tax expense (benefit)

The income tax expense for the nine months ended September 27, 2013 and September 28, 2012 was as follows (in thousands):

	September 27, 2013			September 28, 2012
Income tax expense	$	2,021		$	2,504
Effective tax rate		(11.3	)%		(14.5	)%