Note M - Earnings Per Share - Components of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Sep. 29, 2017	Sep. 30, 2016
Basic:
Net income (loss)	$ 3,405	$ (2,671)
Less: Net earnings attributable to noncontrolling interest	(13)	(25)
Less: Undistributed earnings attributable to unvested shares	(85)
Net income (loss) available to Twin Disc shareholders	$ 3,307	$ (2,696)
Weighted average shares outstanding - basic (in shares)	11,256	11,217
Basic Earnings Per Share:
Net income (loss) per share - basic (in dollars per share)	$ 0.29	$ (0.24)
Diluted:
Net income (loss)	$ 3,405	$ (2,671)
Less: Net earnings attributable to noncontrolling interest	(13)	(25)
Less: Undistributed earnings attributable to unvested shares	(85)
Net income (loss) available to Twin Disc shareholders	$ 3,307	$ (2,696)
Weighted average shares outstanding - basic (in shares)	11,256	11,217
Effect of dilutive stock awards (in shares)	3
Weighted average shares outstanding - diluted (in shares)	11,259	11,217
Diluted Earnings Per Share:
Net income (loss) per share - diluted (in dollars per share)	$ 0.29	$ (0.24)