Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 25, 2016	Mar. 31, 2017	Mar. 25, 2016
Net sales	$ 45,084	$ 41,434	$ 114,591	$ 123,635
Cost of goods sold	31,790	31,816	83,175	94,222
Gross profit	13,294	9,618	31,416	29,413
Marketing, engineering and administrative expenses	13,737	14,072	38,772	43,905
Restructuring expenses	293	272	1,367	787
Impairment charge	2,637		2,637
Other operating (income)				(445)
Loss from operations	(3,373)	(4,726)	(11,360)	(14,834)
Interest expense	61	156	236	356
Other (income) expense, net	(67)	187	(414)	260
Non-operating income (expense)	(6)	343	(178)	616
Loss before income taxes and noncontrolling interest	(3,367)	(5,069)	(11,182)	(15,450)
Income tax benefit	(1,639)	(4,138)	(3,892)	(7,955)
Net loss	(1,728)	(931)	(7,290)	(7,495)
Less: Net earnings attributable to noncontrolling interest, net of tax	(121)	(32)	(166)	(91)
Net loss attributable to Twin Disc	$ (1,849)	$ (963)	$ (7,456)	$ (7,586)
Dividends per share (in dollars per share)				$ 0.18
Loss per share data:
Basic loss per share attributable to Twin Disc common shareholders (in dollars per share)	(0.16)	(0.09)	(0.66)	(0.68)
Diluted loss per share attributable to Twin Disc common shareholders (in dollars per share)	$ (0.16)	$ (0.09)	$ (0.66)	$ (0.68)
Weighted average shares outstanding data:
Basic shares outstanding (in shares)	11,250	11,207	11,236	11,201
Dilutive stock awards (in shares)
Diluted shares outstanding (in shares)	11,250	11,207	11,236	11,201
Comprehensive income (loss):
Net loss	$ (1,728)	$ (931)	$ (7,290)	$ (7,495)
Benefit plan adjustments, net of income taxes of $398, $243, $1,196 and $1,134, respectively	682	671	2,104	2,215
Foreign currency translation adjustment	1,059	1,941	(2,456)	(2,189)
Comprehensive income (loss)	13	1,681	(7,642)	(7,469)
Less: Comprehensive income attributable to noncontrolling interest	(38)	(33)	(149)	(81)
Comprehensive (loss) income attributable to Twin Disc	$ (25)	$ 1,648	$ (7,791)	$ (7,550)