Balance Sheet Items (Tables)

6 Months Ended

Jun. 27, 2015

Balance Sheet Items [Abstract]

Schedule Of Inventories

	June 27,		December 27,
(in thousands)	2015		2014
Work-in-progress	$	16,824	$	17,438
Finished goods		19,341		20,511
	$	36,165	$	37,949

Schedule Of Product Warranties

	Six Months Ended
	June 27,		June 28,
(in thousands)	2015		2014
Balance, beginning of the period	$	1,756	$	2,163
Accrual for new warranties issued		389		222
Reduction for payments and product replacements		(271)		(344)
Adjustments related to revisions and changes in estimate of warranty accrual		—		(88)
Balance, end of the period	$	1,874	$	1,953

Schedule Of Restructuring Costs

	Three Months Ended
	June 27,
(in thousands)	2015
Employee severance and related compensation benefits:
Cost of revenues	$	1,164
Research and development, net		7,944
Selling, general and administrative		3,977
	$	13,085

Schedule Of Restructuring Activity

	June 27,
(in thousands)	2015
Accrued restructuring balance as of December 27, 2014	$	—
Additional accruals		13,085
Accrued restructuring balance as of June 27, 2015	$	13,085