Note 11 - Income Taxes (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended			9 Months Ended		12 Months Ended
	Dec. 22, 2017	Apr. 01, 2018	Dec. 31, 2017	Apr. 02, 2017	Apr. 01, 2018	Apr. 02, 2017	Jun. 30, 2019	Jul. 01, 2018
Effective Income Tax Rate Reconciliation, Percent, Total		35.60%		34.70%	1.60%	31.90%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability			$ (12,200)
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability, Per Diluted Share			$ (0.18)
Unrecognized Tax Benefits, Ending Balance		$ 500			$ 500
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit		$ 0			$ 0
Scenario, Forecast [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent							21.00%	28.00%