Note 10 - Segment Information (Details Textual) $ in Thousands	3 Months Ended				6 Months Ended
	Dec. 31, 2016 USD ($)		Dec. 31, 2015 USD ($)		Dec. 31, 2016 USD ($)		Dec. 31, 2015 USD ($)
Number of Reportable Segments					2
Revenue, Net	$ 53,187	[1]	$ 53,671	[2]	$ 102,100	[3]	$ 104,709	[4]
North American Segment [Member]
Revenue, Net	32,151	[1]	34,304	[2]	60,554	[3]	66,715	[4]
North American Segment [Member] | Intersegment Eliminations [Member]
Revenue, Net	2,339		2,333		4,696		4,242
International Segment [Member]
Revenue, Net	21,036	[1]	19,367	[2]	41,546	[3]	37,994	[4]
International Segment [Member] | Intersegment Eliminations [Member]
Revenue, Net	$ 2,968		$ 2,416		$ 6,049		$ 4,679

[1] Excludes $2,339 of North American segment sales to the International segment and $2,968 of International segment sales to the North American segment.

[2] Excludes $2,333 of North American segment sales to the International segment and $2,416 of International segment sales to the North American segment.

[3] Excludes $4,696 of North American segment sales to the International segment and $6,049 of International segment sales to the North American segment.

[4] Excludes $4,242 of North American segment sales to the International segment and $4,679 of International segment sales to the North American segment.