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Temporary Differences Comprising Deferred Taxes on Consolidated Balance Sheets (Detail) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2013 | Jun. 30, 2012
--- | --- | ---
Income Taxes [Line Items] |  |
Inventory | $ 9,049 | $ 6,893
Unrealized profit on intercompany sales | 1,973 | 1,686
Excess tax basis in equity investments | 4,760 | 4,776
Deferred compensation | 3,161 | 2,651
Other | 885 | 891
Net deferred tax assets | 19,828 | 16,897
Net unrealized gain on available-for-sale investments | (21,662) | (23,791)
Goodwill and intangible asset amortization | (15,195) | (15,123)
Depreciation | (701) | (847)
Other | (687) | (502)
Deferred tax liabilities | (38,245) | (40,263)
Net deferred tax liabilities | $ (18,417) | $ (23,366)

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