CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME [Abstract]
Net sales	$ 285,282,000	$ 355,870,000	$ 310,393,000
Cost of goods sold	205,257,000	234,238,000	202,710,000
Gross profit	80,025,000	121,632,000	107,683,000
Marketing, engineering and administrative expenses	67,899,000	73,091,000	72,967,000
Restructuring of operations	708,000	0	0
Impairment charge	1,405,000	3,670,000	0
Earnings from operations	10,013,000	44,871,000	34,716,000
Other income (expense):
Interest income	102,000	95,000	98,000
Interest expense	(1,435,000)	(1,475,000)	(1,719,000)
Other, net	557,000	1,265,000	(1,066,000)
Other income (expense) total	(776,000)	(115,000)	(2,687,000)
Earnings before income taxes and noncontrolling interest	9,237,000	44,756,000	32,029,000
Income taxes	4,986,000	17,815,000	13,897,000
Net earnings	4,251,000	26,941,000	18,132,000
Less: Net earnings attributable to noncontrolling interest	(369,000)	(198,000)	(135,000)
Net earnings attributable to Twin Disc	3,882,000	26,743,000	17,997,000
Earnings per share data:
Basic earnings per share attributable to Twin Disc common shareholders (in dollars per share)	$ 0.34	$ 2.34	$ 1.59
Diluted earnings per share attributable to Twin Disc common shareholders (in dollars per share)	$ 0.34	$ 2.31	$ 1.57
Weighted average shares outstanding data:
Basic shares outstanding (in shares)	11,304	11,410	11,319
Dilutive stock awards (in shares)	73	146	144
Diluted shares outstanding (in shares)	11,377	11,556	11,463
Comprehensive income:
Net earnings	4,251,000	26,941,000	18,132,000
Foreign currency translation adjustment	447,000	(11,738,000)	19,272,000
Benefit plan adjustments, net of income taxes of $4,163, ($6,769) and $6,036, respectively	8,322,000	(11,690,000)	11,506,000
Comprehensive income	13,020,000	3,513,000	48,910,000
Comprehensive earnings attributable to noncontrolling interest	(369,000)	(198,000)	(135,000)
Comprehensive income (loss) attributable to Twin Disc	$ 12,651,000	$ 3,315,000	$ 48,775,000