Note 1 - Summary of Significant Accounting Policies - New Accounting Pronouncements (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2018
Accounts receivable, net	$ 37,836	$ 54,728	$ 55,544	$ 50,609
Inventories, net	38,752	43,512	46,827	50,994
Other long-term assets, net	10,874	15,124	9,609	9,786
Retained earnings	$ (1,920)	$ (5,808)	15,715	$ 15,124
Revision of Prior Period, Adjustment [Member]
Accounts receivable, net			4,935
Inventories, net			(4,167)
Other long-term assets, net			(177)
Retained earnings			$ 591