Business Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 28, 2014	Mar. 29, 2013	Mar. 28, 2014 Segment	Mar. 29, 2013	Jun. 30, 2013
Business Segments [Abstract]
Number of reportable segments			2
Segment Reporting Information [Line Items]
Net sales	$ 60,705	$ 68,232	$ 190,343	$ 209,351
Net (loss) earnings attributable to Twin Disc	(475)	(757)	1,320	3,835
Assets	275,846		275,846		285,458
Corporate and Eliminations [Member]
Segment Reporting Information [Line Items]
Net (loss) earnings attributable to Twin Disc	(1,982)	(2,787)	(7,160)	(8,787)
Assets	(44,802)		(44,802)		(30,124)
Manufacturing Segment [Member]
Segment Reporting Information [Line Items]
Net sales	52,957	56,678	163,224	181,874
Net (loss) earnings attributable to Twin Disc	(9)	(75)	3,662	7,814
Assets	264,308		264,308		258,617
Manufacturing Segment [Member] | Inter/Intra Segment Elimination [Member]
Segment Reporting Information [Line Items]
Net sales	(18,233)	(15,124)	(54,452)	(54,203)
Distribution Segment [Member]
Segment Reporting Information [Line Items]
Net sales	28,441	31,237	90,018	95,982
Net (loss) earnings attributable to Twin Disc	1,516	2,105	4,818	4,808
Assets	56,340		56,340		56,965
Distribution Segment [Member] | Inter/Intra Segment Elimination [Member]
Segment Reporting Information [Line Items]
Net sales	$ (2,460)	$ (4,559)	$ (8,447)	$ (14,302)