Note 16 - Operating Data (Details) - Geographic Sales and Long-Lived Assets (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Net Sales
Sales	$ 69,525	$ 58,281	$ 61,841	$ 57,487	$ 67,167	$ 59,864	$ 59,829	$ 56,937	$ 247,134	$ 243,797	$ 260,148
Long-lived Assets
Long-lived assets	92,242				96,846				92,242	96,846	100,936
Intersegment Eliminations [Member]
Net Sales
Sales									(43,905)	(34,940)	(42,406)
Long-lived Assets
Long-lived assets	188				168				188	168	114
UNITED STATES
Net Sales
Sales									143,803	133,129	142,417
Long-lived Assets
Long-lived assets	69,631				77,198				69,631	77,198	80,818
BRAZIL
Net Sales
Sales									80,794	86,122	96,404
Long-lived Assets
Long-lived assets	12,699				11,044				12,699	11,044	11,981
UNITED KINGDOM
Net Sales
Sales									31,717	29,260	31,527
Long-lived Assets
Long-lived assets	5,779				4,527				5,779	4,527	4,349
CHINA
Net Sales
Sales									22,663	17,882	19,062
Long-lived Assets
Long-lived assets	3,558				3,460				3,558	3,460	3,210
North America Other Than US [Member]
Net Sales
Sales									12,062	12,344	13,144
Long-lived Assets
Long-lived assets	$ 387				$ 449				$ 387	$ 449	$ 464