Business Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 27, 2013 Segment	Sep. 28, 2012	Jun. 30, 2013
Business Segments [Abstract]
Number of reportable segments	2
Segment Reporting Information [Line Items]
Net sales	$ 66,426	$ 68,793
Net earnings attributable to Twin Disc	1,277	1,231
Assets	273,156		285,458
Corporate and Eliminations [Member]
Segment Reporting Information [Line Items]
Net earnings attributable to Twin Disc	(2,621)	(2,755)
Assets	(40,020)		(30,124)
Manufacturing Segment [Member]
Segment Reporting Information [Line Items]
Net sales	53,258	58,282
Net earnings attributable to Twin Disc	2,017	2,834
Assets	260,341		258,617
Manufacturing Segment [Member] | Inter/Intra Segment Elimination [Member]
Segment Reporting Information [Line Items]
Net sales	(13,768)	(15,558)
Distribution Segment [Member]
Segment Reporting Information [Line Items]
Net sales	31,014	31,003
Net earnings attributable to Twin Disc	1,881	1,152
Assets	52,835		56,965
Distribution Segment [Member] | Inter/Intra Segment Elimination [Member]
Segment Reporting Information [Line Items]
Net sales	$ (4,078)	$ (4,934)