Note 15 - Sale of Subsidiary (Details) - USD ($)		3 Months Ended												12 Months Ended
	Sep. 30, 2014	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	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, 2015		Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2012	Jun. 30, 2011
Note 15 - Sale of Subsidiary (Details) [Line Items]
Gain (Loss) on Disposition of Business														$ (565,000)
Revenue, Net		$ 76,073,000	$ 68,603,000	$ 84,715,000	$ 78,466,000	$ 73,858,000	$ 68,996,000	$ 76,123,000	$ 80,486,000	$ 68,837,000	$ 66,152,000	$ 71,082,000	$ 74,719,000	307,857,000	[1]	$ 299,463,000	[1]	$ 280,790,000	[1]	$ 268,402,000	$ 293,501,000
Operating Income (Loss)														$ 7,533,000		$ 2,318,000		$ 630,000		$ 6,331,000	$ 16,304,000
LSI Saco Technologies Inc [Member]
Note 15 - Sale of Subsidiary (Details) [Line Items]
Sale of Stock, Consideration Received on Transaction	$ 1,900,000
Gain (Loss) on Disposition of Business	(565,000)
Line of Credit, Terminated	$ 5,000,000				5,000,000
Revenue, Net					41,000
Operating Income (Loss)					$ 183,000

[1] Net sales are attributed to geographic areas based upon the location of the operation making the sale.