Note 12 - Income Taxes (Details Textual)	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Mar. 31, 2019	Mar. 31, 2018
Effective Income Tax Rate Reconciliation, Percent, Total	22.30%	64.30%
Effective Income Tax Rate Continuing Operations Change	(42.00%)
Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act, Percent	(14.00%)
Effective Income Tax Rate Reconciliation, Change in Federal and State Credits and Incentives, Percent	(10.60%)
Effective Income Tax Rate Reconciliation, Effect of a Bargain Purchase Gain and The Outside Basis Difference Write-Off for the Purchase, Percent	(24.60%)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent				35.00%
Scenario, Forecast [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%