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Note 2 - Acquisition (Details) - USD ($)
$ in Thousands
3 Months Ended
Sep. 04, 2014
Sep. 30, 2014
Sep. 30, 2015
Jun. 30, 2015
Note 2 - Acquisition (Details) [Line Items]        
Goodwill     $ 153,518 $ 154,732
MPE Aeroengines Inc. [Member]        
Note 2 - Acquisition (Details) [Line Items]        
Payments to Acquire Businesses, Gross $ 55,000      
Business Acquisition, Percentage of Voting Interests Acquired 100.00%      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill $ 10,600      
Goodwill 34,800      
MPE Aeroengines Inc. [Member] | Trademarks [Member]        
Note 2 - Acquisition (Details) [Line Items]        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets 1,500      
Ultrafryer Systems, Inc. [Member] | Land and Building [Member]        
Note 2 - Acquisition (Details) [Line Items]        
Payments to Acquire Businesses, Gross   $ 2,200    
Customer Relationships [Member] | MPE Aeroengines Inc. [Member]        
Note 2 - Acquisition (Details) [Line Items]        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles $ 9,100      
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 15 years