Income Taxes (Schedule of Tax Effects of Temporary Differences that Give Rise to the Deferred Tax Assets and Liabilities) (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Jun. 30, 2011
Deferred tax assets:
Accrued environmental remediation liabilities not currently deductible	$ 302	$ 370
Accrued deferred compensation	2,429	2,001
Accrual for acquisition costs not currently deductible	337	350
Accrual for sales deductions not currently deductible	1,528	1,174
Additional inventoried costs for tax purposes	255	176
Allowance for doubtful accounts receivable	134	81
Depreciation and amortization	1,438	549
Accrual for payments to former senior management and other personnel related costs	159	194
Contingent consideration	489
Domestic net operating loss carryforwards	200	220
Foreign net operating loss carryforwards	965	1,283
Total gross deferred tax assets	8,236	6,398
Valuation allowances	(946)	(1,019)
Deferred tax assets, net	7,290	5,379
Deferred tax liabilities:
Foreign deferred tax liabilities	(8)	(357)
Unrealized gain on investments		(178)
Goodwill	(1,457)	(622)
Installment gain on sale of assets		(136)
Other	(166)	(219)
Total gross deferred tax liabilities	(1,631)	(1,512)
Net deferred tax assets	$ 5,659	$ 3,867