Income Taxes (Schedule of Tax Effects of Temporary Differences that Give Rise to the Deferred Tax Assets and Liabilities) (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Jun. 30, 2014
Deferred tax assets:
Accrued deferred compensation	$ 3,025	$ 2,970
Accrual for sales deductions not currently deductible	6,388	5,901
Additional inventoried costs for tax purposes	262	236
Allowance for doubtful accounts receivable	132	87
Depreciation and amortization	6,899	6,074
Accrual for payments to former senior management and other personnel related costs	29	126
Contingent consideration	286	1,313
Foreign deferred tax assets	1,201	477
Domestic net operating loss carryforwards	132	158
Foreign net operating loss carryforwards	678	857
Total gross deferred tax assets	19,032	18,199
Valuation allowances	(810)	(1,015)
Deferred tax assets, net	18,222	17,184
Deferred tax liabilities:
Foreign deferred tax liabilities	(66)	(6)
Goodwill	(6,117)	(4,627)
Accrued environmental remediation liabilities not currently deductible	(39)	(216)
Other	(44)	(246)
Total gross deferred tax liabilities	(6,266)	(5,095)
Net deferred tax assets	$ 11,956	$ 12,089