BALANCE SHEET COMPONENTS (Tables)

12 Months Ended

Dec. 30, 2018

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Schedule of balance sheet components

	December 30, 2018			December 31, 2017
	(in thousands)
Inventories:
Work-in-process	$	3,120		$	2,894
Finished goods		716			665
	$	3,836		$	3,559
Other current assets:
Prepaid expenses	$	1,483		$	836
Other		292			161
	$	1,775		$	997
Property and equipment:
Equipment	$	10,607		$	10,996
Software		2,788			3,139
Furniture and fixtures		42			46
Leasehold improvements		712			674
		14,149			14,855
Accumulated depreciation and amortization		(12,700	)		(12,480	)
	$	1,449		$	2,375
Accrued liabilities:
Employee compensation related accruals		1,154		$	1,143
Other		749			510
	$	1,903		$	1,653