Note 2 - Acquisitions - Components of Fair Value of Acquisitions and Allocation of Purchase Price For Acquisition of Standex Electronics Japan Corporation (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
Mar. 31, 2017	Mar. 31, 2017	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Total			$ 10,397	$ 153,815	$ 13,700
Goodwill			251,762	$ 242,690	$ 157,354
Standex Electronics Japan Corporation [Member]
Cash payments	$ 137,676
Less: cash acquired	(8,521)
Total	129,155	$ 129,200
Other acquired assets	10,339	10,339
Inventories	8,203	8,203
Property, plant, and equipment	18,206	18,206
Identifiable intangible assets	51,400	51,400
Goodwill	79,434	79,434	$ 79,400
Liabilities assumed	(19,279)	(19,279)
Deferred taxes	(19,148)	(19,148)
Total	$ 129,155	$ 129,155

Amount of other assets acquired at the acquisition date.

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Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date.

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