Note 2 - Segment Information - Summary of Financial Results for Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Mar. 31, 2020		Mar. 31, 2019		Mar. 31, 2020		Mar. 31, 2019
Sales	$ 49,998	[1]	$ 58,498	[2]	$ 158,976	[3]	$ 166,931	[4]
Operating Income (Loss)	64		3,468	[5]	4,271		7,852	[5]
North American Segment [Member]
Sales	33,369	[1]	36,069	[2]	97,475	[3]	100,897	[4]
Operating Income (Loss)	1,337		3,224	[5]	6,217		6,677	[5]
International [Member]
Sales	16,629	[1]	22,429	[2]	61,501	[3]	66,034	[4]
Operating Income (Loss)	448		2,039	[5]	3,069		5,899	[5]
Unallocated [Member]
Sales		[1]		[2]		[3]		[4]
Operating Income (Loss)	$ (1,721)		$ (1,795)	[5]	$ (5,015)		$ (4,724)	[5]

[1] Excludes $1,063 of North American segment intercompany sales to the International segment, and $2,722 of International segment intercompany sales to the North American segment.

[2] Excludes $1,063 of North American segment intercompany sales to the International segment, and $2,722 of International segment intercompany sales to the North American segment.

[3] Excludes $3,079 of North American segment intercompany sales to the International segment, and $10,820 of International segment intercompany sales to the North American segment.

[4] Excludes $3,736 of North American segment intercompany sales to the International segment, and $10,985 of International segment intercompany sales to the North American segment.

[5] As a result of the adoption of ASU 2017-07 "Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost", the respective line items in the Consolidated Statement of Operations for Fiscal 2019 have been reclassified.