Note 7 - Income Taxes (Details Textual) - USD ($)	3 Months Ended	9 Months Ended		12 Months Ended
	Dec. 29, 2018	Jun. 29, 2019	Jun. 30, 2018	Sep. 29, 2018
Effective Income Tax Rate Reconciliation, Percent, Total		22.40%	12.00%
Tax Cuts and Jobs Act, Change in Tax Rate, Deferred Tax Liability, Income Tax Benefit	$ 3,700,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent				24.50%
Deferred Tax Liabilities, Net, Noncurrent		$ 7,533,000		$ 5,340,000
Deferred Tax Assets, Tax Credit Carryforwards, Total		16,000
Deferred Tax Assets, Valuation Allowance, Total		265,000		$ 233,000
State and Local Jurisdiction [Member]
Operating Loss Carryforwards, Total		$ 2,100,000
State and Local Jurisdiction [Member] | Earliest Tax Year [Member]
Operating Loss Carryforwards Expiration Date 1		2022
Tax Credit Carryforward, Expiration Date 1		2019
State and Local Jurisdiction [Member] | Latest Tax Year [Member]
Operating Loss Carryforwards Expiration Date 1		2031
Tax Credit Carryforward, Expiration Date 1		2020