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.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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Note 2 - Acquisition (Details Textual) - USD ($) $ in Thousands			3 Months Ended		6 Months Ended
	Oct. 01, 2015	Sep. 04, 2014	Sep. 30, 2014	Sep. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Jun. 30, 2015
Wisconsin-based Northlake Engineering, Inc [Member] \| Customer Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 2,500
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	12 years 182 days
Wisconsin-based Northlake Engineering, Inc [Member] \| Noncompete Agreements [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 300
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years
Wisconsin-based Northlake Engineering, Inc [Member] \| Trademarks [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets	$ 1,300
Wisconsin-based Northlake Engineering, Inc [Member]
Payments to Acquire Businesses, Net of Cash Acquired	$ 13,544
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 4,124
Goodwill	7,821
Payments to Acquire Businesses, Gross	$ 13,859
MPE Aeroengines, Inc [Member] \| Customer Relationships [Member]
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
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					$ 13,544	$ 57,149
Goodwill					$ 160,241		$ 154,732