Note 2 - Acquisition (Details) - Components of Fair Value of Acquisitions and Allocation of Purchase Price (Details) - USD ($) $ in Thousands		9 Months Ended
	Sep. 04, 2014	Mar. 31, 2016	Mar. 31, 2015	Jun. 30, 2015
Enginetics [Member]
Payments to Acquire Businesses, Gross	$ 55,021
Less: cash acquired	(113)
Payments to Acquire Businesses, Net of Cash Acquired	54,908
Current Assets	12,134
Property, plant, and equipment	8,808
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	10,600
Goodwill	34,790
Other non-current assets	158
Liabilities assumed	(5,449)
Deferred taxes	(6,133)
Total	$ 54,908
Payments to Acquire Businesses, Net of Cash Acquired		$ 13,700	$ 57,149
Goodwill		$ 158,589		$ 154,732