Note 13 - Sale of Subsidiary (Details Textual) - USD ($)			3 Months Ended			6 Months Ended
		Sep. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2015	Dec. 31, 2014
LSI Saco Technologies Inc [Member]
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)
Gain (Loss) on Disposition of Business							$ (565,000)
Revenue, Net	[1]		$ 84,687,000	$ 84,715,000		$ 170,612,000	163,181,000
Operating Income (Loss)			$ 5,380,000	$ 2,224,000		$ 11,143,000	$ 4,758,000

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