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Balance Sheet Components (Tables)

9 Months Ended

Sep. 27, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of supplemental balance sheet disclosures



	As of
	September 27, 2015				December 28, 2014
	(in thousands)
Inventories:
Raw material	$	—			$	—
Work-in-process	1,660				1,191
Finished goods	712				3,761
	$	2,372			$	4,952
Other current assets:
Prepaid expenses	$	714			$	1,042
Other	119				104
	$	833			$	1,146
Property and equipment:
Equipment	$	13,618			$	14,047
Software	2,941				3,332
Furniture and fixtures	131				710
Leasehold improvements	713				595
	17,403				18,684
Accumulated depreciation and amortization	(14,840		)		(15,467		)
	$	2,563			$	3,217

Accrued liabilities:
Employee related accruals	$	1,804			$	1,356
Restructuring accruals - See Note 12	111				—
Other	114				218
	$	2,029			$	1,574