Summary Of Significant Accounting Policies (Summary of Statements of Operations Restatement Adjustments) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014	Dec. 28, 2014
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Income tax (benefit) expense	$ 3,387	$ 1,777	$ 5,272	$ 2,997
Net (loss) earnings	$ (9,492)	$ 9,854	$ (12,051)	$ 9,725	$ 10,953
Basic (loss) earnings per share (USD per share)	$ (0.22)	$ 0.23	$ (0.28)	$ 0.23
Diluted (loss) earnings per share (USD per share)	$ (0.22)	$ 0.23	$ (0.28)	$ 0.23
As Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Income tax (benefit) expense	$ (698)		$ (627)
Net (loss) earnings	$ (5,407)		$ (6,152)
Basic (loss) earnings per share (USD per share)	$ (0.13)		$ (0.14)
Diluted (loss) earnings per share (USD per share)	$ (0.13)		$ (0.14)
Restatement Adjustments
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Income tax (benefit) expense	$ 4,085		$ 5,899
Net (loss) earnings	$ (4,085)		$ (5,899)
Basic (loss) earnings per share (USD per share)	$ (0.09)		$ (0.14)
Diluted (loss) earnings per share (USD per share)	$ (0.09)		$ (0.14)