Note 2 - Acquisition (Details) (USD $)			1 Months Ended	3 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Jul. 31, 2012 Meder Electronic [Member]	Sep. 30, 2013 Meder Electronic [Member]
Note 2 - Acquisition (Details) [Line Items]
Payments to Acquire Businesses, Gross			$ 43,200,000	$ 43,181,000
Ownership Interest Acquired			100.00%
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			8,200,000	8,200,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets			3,400,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			4,800,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			10 years
Goodwill	$ 113,499,000	$ 111,905,000	$ 12,100,000	$ 12,063,000