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Note 2 - Acquisition (Details) (USD $)
 1 Months Ended 1 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2014
Trademarks [Member]
Ultrafryer Systems, Inc. [Member]
Jun. 30, 2014
Customer Relationships [Member]
Ultrafryer Systems, Inc. [Member]
Jul. 31, 2012
Customer Relationships [Member]
Meder Electronic [Member]
Jun. 30, 2014
Other Intangible Assets [Member]
Ultrafryer Systems, Inc. [Member]
Jun. 30, 2014
Other Intangible Assets [Member]
Ultrafryer Systems, Inc. [Member]
Minimum [Member]
Jun. 30, 2014
Other Intangible Assets [Member]
Ultrafryer Systems, Inc. [Member]
Maximum [Member]
Jun. 30, 2014
Other Intangible Assets [Member]
Planar Quality Corporation [Member]
Jun. 30, 2014
Patents [Member]
Planar Quality Corporation [Member]
Jun. 30, 2014
Ultrafryer Systems, Inc. [Member]
Jun. 30, 2014
Planar Quality Corporation [Member]
Jul. 31, 2012
Meder Electronic [Member]
Note 2 - Acquisition (Details) [Line Items]                            
Payments to Acquire Businesses, Gross                       $ 20,745,000 $ 2,400,000 $ 43,181,000
Business Acquisition, Percentage of Voting Interests Acquired                       100.00%   100.00%
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill                       7,612,000 1,000,000 8,200,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets       2,400,000                   3,400,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles         4,900,000 4,800,000 300,000     700,000 400,000      
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life         15 years 10 years   3 years 5 years 5 years 7 years      
Goodwill 125,965,000 111,905,000 100,633,000                 10,930,000   12,063,000
Business Acquisition, Goodwill, Expected Tax Deductible Amount                         $ 1,200,000