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Note 2 - Acquisition (Details Textual) - USD ($) $ in Thousands |  |  | 3 Months Ended | 6 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Oct. 01, 2015 | Sep. 04, 2014 | Sep. 30, 2014 | Sep. 30, 2014 | Mar. 31, 2016 | Mar. 31, 2016 | Mar. 31, 2015 | Jun. 30, 2015
Wisconsin-based Northlake Engineering, Inc [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill | $ 4,100 |  |  |  |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | 12 years 182 days |  |  |  |  |  |  |
Wisconsin-based Northlake Engineering, Inc [Member] | Noncompete Agreements [Member] |  |  |  |  |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | 5 years |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | $ 300 |  |  |  |  |  |  |
Wisconsin-based Northlake Engineering, Inc [Member] | Trademarks [Member] |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill | 2,400 |  |  |  |  |  |  |
Wisconsin-based Northlake Engineering, Inc [Member] |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired | $ 13,700 |  |  |  | $ 13,700 |  |  |
Business Acquisition, Percentage of Voting Interests Acquired | 100.00% |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill | $ 6,800 |  |  |  | 6,824 | $ 6,824 |  |
Goodwill | $ 7,800 |  |  |  | 5,121 | 5,121 |  |
Payments to Acquire Businesses, Gross |  |  |  |  | 14,015 |  |  |
MPE Aeroengines, Inc [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  | 15 years |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  | $ 9,100 |  |  |  |  |  |
MPE Aeroengines, Inc [Member] | Trademarks [Member] |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets |  | $ 1,500 |  |  |  |  |  |
MPE Aeroengines, Inc [Member] |  |  |  |  |  |  |  |
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 |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  | $ 55,000 |  |  |  |  |  |
Ultrafryer Systems, Inc [Member] | Land and Building [Member] |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  |  |  | $ 2,200 |  |  |  |
Ultrafryer Systems, Inc [Member] |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  |  | $ 23,000 |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  | 13,700 | $ 57,149 |
Goodwill |  |  |  |  | $ 158,589 | $ 158,589 |  | $ 154,732

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
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- Definition Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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