Note 15 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jan. 02, 2021	Dec. 29, 2019
Deferred tax assets:
Allowance for doubtful accounts	$ 455	$ 432
Federal and state net operating loss carryforward	2,634	330
Reserves and accruals	1,491	255
Other	318	185
Total deferred tax assets	4,898	1,202
Deferred tax liabilities:
Acquisition amortization, net	(716)	(569)
Prepaid expense deferral	(602)	(701)
Bonus depreciation to be reversed	(280)	(327)
Canada deferred tax liability, net	(365)	(382)
Total deferred tax liabilities	(1,963)	(1,979)
Total deferred tax assets, net	$ 2,935
Total deferred tax liability, net		$ (777)