Income taxes (Tables)

3 Months Ended

Mar. 29, 2013

Income taxes [Abstract]

Income tax expense (benefit)

The income tax expense for the three months ended March 29, 2013 and March 30, 2012 was as follows (in thousands):

	March 29, 2013			March 30, 2012
Income tax expense	$	434		$	657
Effective tax rate		(6	)%		(18	)%