CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 30, 2011	Dec. 31, 2010	Dec. 30, 2011	Dec. 31, 2010
Condensed Consolidated Statements of Operations and Comprehensive Income [Abstract]
Net sales	$ 82,941	$ 75,160	$ 164,271	$ 136,555
Cost of goods sold	53,379	51,403	103,941	92,775
Gross profit	29,562	23,757	60,330	43,780
Marketing, engineering and administrative expenses	20,097	18,639	36,006	33,416
Earnings from operations	9,465	5,118	24,324	10,364
Interest expense	381	440	740	879
Other (income) expense, net	(150)	89	(544)	643
	231	529	196	1,522
Earnings before income taxes and noncontrolling interest	9,234	4,589	24,128	8,842
Income taxes	3,368	529	8,627	2,085
Net earnings	5,866	4,060	15,501	6,757
Less: Net earnings attributable to noncontrolling interest, net of tax	(9)	(26)	(63)	(67)
Net earnings attributable to Twin Disc	5,857	4,034	15,438	6,690
Dividends per share	$ 0.08	$ 0.07	$ 0.16	$ 0.14
Earnings (loss) per share data:
Basic earnings per share attributable to Twin Disc common shareholders	$ 0.51	$ 0.36	$ 1.35	$ 0.59
Diluted earnings per share attributable to Twin Disc common shareholders	$ 0.51	$ 0.35	$ 1.34	$ 0.59
Weighted average shares outstanding data:
Basic shares outstanding	11,429	11,334	11,411	11,291
Dilutive stock awards	143	117	144	112
Diluted shares outstanding	11,572	11,451	11,555	11,403
Comprehensive income:
Net earnings	5,866	4,060	15,501	6,757
Benefit plan adjustments, net	411	567	885	1,120
Foreign currency translation adjustment	(6,258)	2,830	(8,533)	10,225
Comprehensive income	19	7,457	7,853	18,102
Comprehensive income attributable to noncontrolling interest	(9)	(26)	(63)	(67)
Comprehensive income attributable to Twin Disc	$ 10	$ 7,431	$ 7,790	$ 18,035