Note 17 - Financial Information by Segment and Geographic Area - Geographic Sales and Long-Lived Assets (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017		Jun. 30, 2016		Jun. 30, 2015
Revenue, Net	$ 54,253	$ 50,670	$ 53,187	$ 48,913	$ 54,647	$ 50,329	$ 53,671	$ 51,038	$ 207,023	[1]	$ 209,685	[2]	$ 241,550	[3]
Long-lived assets	53,883				50,534				53,883		50,534		54,572
UNITED STATES
Revenue, Net									115,562		119,638		125,534
Long-lived assets	39,131				36,189				39,131		36,189		40,146
North America Other than US [Member]
Revenue, Net									9,044		10,470		11,551
Long-lived assets	68				350				68		350		360
North America [Member]
Revenue, Net									124,606		130,108		137,085
Long-lived assets	39,199				36,539				39,199		36,539		40,506
BRAZIL
Revenue, Net									45,614		43,283		63,961
Long-lived assets	10,111				8,818				10,111		8,818		7,986
UNITED KINGDOM
Revenue, Net									24,954		24,485		26,691
Long-lived assets	1,976				2,143				1,976		2,143		2,647
CHINA
Revenue, Net									6,873		7,207		8,357
Long-lived assets	2,426				2,887				2,426		2,887		3,291
Australia and New Zealand [Member]
Revenue, Net									4,976		4,602		5,456
Long-lived assets	171				147				171		147		142
International [Member]
Revenue, Net									82,417		79,577		104,465
Long-lived assets	$ 14,684				$ 13,995				$ 14,684		$ 13,995		$ 14,066

[1] Excludes $7,902 of North American segment sales to the International segment and $11,677 sales of the International segment to the North American segment.

[2] Excludes $8,259 of North American segment sales to the International segment and $9,282 sales of the International segment to the North American segment.

[3] Excludes $12,276 of North American segment sales to the International segment and $9,842 sales of the International segment to the North American segment.