BUSINESS SEGMENTS AND FOREIGN OPERATIONS, Net Sales by Product Group (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Net Sales by Product Group [Abstract]
Net sales	$ 263,909	$ 285,282	$ 355,870
Industrial [Member]
Net Sales by Product Group [Abstract]
Net sales	41,188	48,110	54,062
Land Based Transmissions [Member]
Net Sales by Product Group [Abstract]
Net sales	67,055	68,535	146,686
Marine and Propulsion Systems [Member]
Net Sales by Product Group [Abstract]
Net sales	149,432	162,823	151,407
Other [Member]
Net Sales by Product Group [Abstract]
Net sales	$ 6,234	$ 5,814	$ 3,715