Note 15 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 29, 2018	Dec. 30, 2017
Deferred tax assets:
Allowance for doubtful accounts	$ 388	$ 235
Federal and state net operating loss carryforward	1,253	2,501
Reserves and accruals	343	435
Other	125	53
Total deferred tax assets	2,109	3,224
Deferred tax liabilities:
Acquisition amortization, net	(403)	(206)
Prepaid expense deferral	(600)	(503)
Bonus depreciation to be reversed	(381)	(326)
Canada deferred tax liability, net	(398)	(431)
Total deferred tax liabilities	(1,782)	(1,466)
Total deferred tax liability, net	$ 327	$ 1,758