Deferred Tax Assests and Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Jun. 30, 2015
Deferred tax assets:
Inventories	$ 2,183	$ 2,194
Net operating loss and other carryforwards	32,374	37,342
Allowance for doubtful accounts	686	894
Stock based and other compensation	3	1,502
Post-retirement benefits	1,690	6,125
Goodwill		2,057
Accrued expense and other	5,843	9,306
Gross deferred tax assets	42,779	59,420
Valuation allowance	(10,544)	(10,050)
Deferred income tax asset	32,235	49,370
Deferred income tax liabilities:
Property and equipment	(18,005)	(19,469)
Goodwill	(685)
Intangible assets	(78,960)	(99,940)
Deferred income tax liabilities	(97,650)	(119,409)
Net deferred tax liability	$ (65,415)	$ (70,039)