Interest and Other Income (Schedule of Interest and other income) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Other Income And Expenses [Abstract]
Dividends	$ 233	$ 257	$ 228
Interest	282	237	185
Foreign government subsidies received	22	38	17
Joint venture equity earnings	1,761	2,024	1,790
Foreign currency losses	(1,065)	(102)	(105)
Rental income	151	144	82
Miscellaneous income	102	(96)	59
Interest and other income	$ 1,486	$ 2,502	$ 2,256