Note 4 - Income Taxes (Details Textual) - USD ($)	3 Months Ended			6 Months Ended
	Jul. 01, 2017	Jul. 02, 2016	Apr. 02, 2016	Jul. 01, 2017	Jul. 02, 2016
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount				$ 121,000
Deferred Tax Assets, Valuation Allowance	$ 12,700,000			12,700,000
Operating Loss Carryforwards	$ 20,900,000	$ 21,700,000		$ 20,900,000	$ 21,700,000
Taxable Income from Surrender of Policies			$ 24,000,000
Effective Income Tax Rate Reconciliation, Percent	0.00%	3.30%		0.00%	(24.30%)
Current Income Tax Expense (Benefit)	$ 0			$ 0