Note 15 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 28, 2019	Dec. 29, 2018
Deferred tax assets:
Allowance for doubtful accounts	$ 432	$ 388
Federal and state net operating loss carryforward	330	1,253
Reserves and accruals	255	343
Other	185	125
Total deferred tax assets	1,202	2,109
Deferred tax liabilities:
Acquisition amortization, net	(569)	(403)
Prepaid expense deferral	(701)	(600)
Bonus depreciation to be reversed	(327)	(381)
Canada deferred tax liability, net	(382)	(398)
Total deferred tax liabilities	(1,979)	(1,782)
Total deferred tax liability, net	$ (777)
Total deferred tax assets, net		$ 327