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Note C - Revenue Recognition - Net Sales by Product Group (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Net Sales	$ 302,663	$ 240,733
Operating Segments [Member]
Net Sales	386,909	301,071
Operating Segments [Member] | Manufacturing Segment [Member]
Net Sales	280,428	216,383
Operating Segments [Member] | Distribution Segment [Member]
Net Sales	106,481	84,688
Intersegment Eliminations [Member]
Net Sales	(84,246)	(60,338)
Industrial [Member]
Net Sales	34,042	30,888
Industrial [Member] | Operating Segments [Member] | Manufacturing Segment [Member]
Net Sales	30,393
Industrial [Member] | Operating Segments [Member] | Distribution Segment [Member]
Net Sales	8,079
Industrial [Member] | Intersegment Eliminations [Member]
Net Sales	(4,430)
Land Based Transmissions [Member]
Net Sales	112,793	107,169
Land Based Transmissions [Member] | Operating Segments [Member] | Manufacturing Segment [Member]
Net Sales	111,260
Land Based Transmissions [Member] | Operating Segments [Member] | Distribution Segment [Member]
Net Sales	30,483
Land Based Transmissions [Member] | Intersegment Eliminations [Member]
Net Sales	(28,950)
Marine and Propulsion Systems [Member]
Net Sales	150,237	96,785
Marine and Propulsion Systems [Member] | Operating Segments [Member] | Manufacturing Segment [Member]
Net Sales	138,704
Marine and Propulsion Systems [Member] | Operating Segments [Member] | Distribution Segment [Member]
Net Sales	62,329
Marine and Propulsion Systems [Member] | Intersegment Eliminations [Member]
Net Sales	(50,796)
Other [Member]
Net Sales	5,591	$ 5,891
Other [Member] | Operating Segments [Member] | Manufacturing Segment [Member]
Net Sales	71
Other [Member] | Operating Segments [Member] | Distribution Segment [Member]
Net Sales	5,590
Other [Member] | Intersegment Eliminations [Member]
Net Sales	$ (70)

X

- Definition

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

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