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Note A - Basis of Presentation and Significant Accounting Policies - Effects of Adopting ASU 2017-07 on the Condensed Statements of Operations and Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cost of goods sold	$ 213,022	$ 160,092
Gross profit	89,641	80,641
Marketing, engineering and administrative expenses	71,541	61,095
Income from operations	18,498	16,148
Other income (expense), net	$ (2,107)	(1,501)
Previously Reported [Member]
Cost of goods sold		160,497
Gross profit		80,236
Marketing, engineering and administrative expenses		61,909
Income from operations		14,929
Other income (expense), net		(282)
Restatement Adjustment [Member] | Accounting Standards Update 2017-07 [Member]
Cost of goods sold		(405)
Gross profit		405
Marketing, engineering and administrative expenses		(814)
Income from operations		1,219
Other income (expense), net		$ (1,219)

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The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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