Property and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Jun. 30, 2013
Cost:
Land	$ 7,437	$ 7,438
Buildings and improvements	149,739	142,656
Machinery and equipment	51,743	39,706
Property, Plant and Equipment, Gross, Total	208,919	189,800
Accumulated depreciation and amortization	(92,270)	(81,044)
Property and equipment, net	$ 116,649	$ 108,756