BALANCE SHEET COMPONENTS (Tables)

12 Months Ended

Jan. 01, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of balance sheet components

	January 1, 2017			January 3, 2016
	(in thousands)
Inventories:
Raw materials	$	—		$	—
Work-in-process	1,538			1,720
Finished goods	479			1,158
	$	2,017		$	2,878
Other current assets:
Prepaid expenses	$	960		$	1,184
Other	163			128
	$	1,123		$	1,312
Property and equipment:
Equipment	$	11,524		$	14,531
Software	2,624			3,114
Furniture and fixtures	41			131
Leasehold improvements	708			714
	14,897			18,490
Accumulated depreciation and amortization	(12,132		)	(15,175		)
	$	2,765		$	3,315
Accrued liabilities:
Employee compensation related accruals	$	1,222		$	1,237
Other	358			245
	$	1,580		$	1,482