INCOME TAXES (Details 3) - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
Non-current deferred tax assets:
Accounts receivable	$ 35	$ 119
Accrued expenses	262	845
Goodwill and intangible assets	632	1,492
Share-based compensation expense	153	664
Net operating loss carryforward	21,990	31,031
Inventories	719	1,068
Foreign tax credit carryforward	1,006	1,006
Deferred revenue	199	357
Other	20	(24)
Total non-current deferred tax assets	25,016	36,558
Valuation allowance	(25,016)	(36,558)
Net non-current deferred tax asset	$ 0	$ 0