Note 1 - Accounting Policies (Details) (USD $)	12 Months Ended			0 Months Ended		12 Months Ended							12 Months Ended					12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011	Aug. 06, 2013 Subsequent Event [Member]	Aug. 06, 2012 Subsequent Event [Member]	Jun. 30, 2013 Building [Member] Minimum [Member]	Jun. 30, 2013 Building [Member] Maximum [Member]	Jun. 30, 2013 Delta [Member]	Jun. 30, 2011 Delta [Member]	Jun. 30, 2012 King [Member]	Jun. 30, 2013 Accumulated Amortization [Member]	Jun. 30, 2012 Accumulated Amortization [Member]	Jun. 30, 2013 Deferred Debt [Member]	Jun. 30, 2012 Deferred Debt [Member]	Jun. 30, 2011 Deferred Debt [Member]	Jun. 30, 2013 Intellectual Property [Member]	Jun. 30, 2012 Intellectual Property [Member]	Jun. 30, 2013 Minimum [Member]	Jun. 30, 2013 Maximum [Member]
Note 1 - Accounting Policies (Details) [Line Items]
Inventory Valuation Reserves	$ 456,000	$ 454,000
Interest Costs Capitalized	1,646,000	532,000	881,000
Property, Plant and Equipment, Useful Life						30 years	40 years											3 years	20 years
Asset Impairment Charges	3,591,000	2,094,000	13,007,000					3,591,000	13,007,000	2,094,000
Goodwill, Impairment Loss		2,425,000
Intangible Assets, Net (Excluding Goodwill)	11,146,000	13,193,000														8,640,000	10,217,000
Finite-Lived Intangible Asset, Useful Life																		5 years	20 years
Finite-Lived Intangible Assets, Accumulated Amortization	26,646,000	24,579,000									1,706,000	1,085,000
Amortization of Intangible Assets	2,070,000	2,021,000	1,966,000										621,000	620,000	663,000
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	2,070,000
Finite-Lived Intangible Assets, Amortization Expense, Year Two	2,063,000
Finite-Lived Intangible Assets, Amortization Expense, Year Three	1,619,000
Finite-Lived Intangible Assets, Amortization Expense, Year Four	1,413,000
Finite-Lived Intangible Assets, Amortization Expense, Year Five	261,000
Write off of Deferred Debt Issuance Cost	1,456,000	2,077,000
Entity Number of Employees	1,240,000
Collective Bargaining Agreements	60.00%
Research and Development Expense	7,703,000	7,086,000	7,058,000
Foreign Currency Transaction Gain (Loss), Realized	163,000	507,000	1,741,000
Common Stock, Dividends, Per Share, Declared (in Dollars per share)				$ 0.09	$ 0.09
Treasury Stock, Number of Shares Held (in Shares)	7,252,029
Stock Repurchase Program, Authorized Amount	11,000,000
Stock Repurchased During Period, Shares (in Shares)	300,900	1,187,029	400,000
Stock Repurchased During Period, Value	$ 9,203,000	$ 32,916,000	$ 9,799,000