Note 7 - Income Taxes - Income Tax Reconciliation (Details)	6 Months Ended	12 Months Ended
Dec. 31, 2017	Jul. 01, 2018	Jul. 02, 2017
Taxes computed at statutory rate	35.00%	27.50%	34.00%
State income taxes, net of Federal income tax benefit		3.60%	3.20%
Dividends received exclusion		(1.00%)	(1.80%)
Tax rate adjustment for change in tax law		(14.80%)
All other net		(1.30%)	(1.00%)
Net effective rate		14.00%	34.40%

The exclusion of all other factors as expressed in a percentage of effect on effective tax rate.

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The exclusion of dividends received as expressed in a percentage of effect on effective tax rate.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the income tax rates.

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