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Investments - Components of Company's Available-for-Sale Investments (Detail) (USD $) | Dec. 31, 2013 | Jun. 30, 2013
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Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale, cost | $ 6,485,471 | $ 8,064,902
Available-for-sale, gross unrealized gain | 1,136,000 | 1,289,000
Available-for-sale, gross unrealized (loss) | (278,000) | (301,000)
Available-for-sale, market value | 7,343,679 | 9,053,111
Common stock |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale, cost | 1,668,000 | 870,000
Available-for-sale, gross unrealized gain | 1,075,000 | 529,000
Available-for-sale, gross unrealized (loss) | (11,000) | (5,000)
Available-for-sale, market value | 2,732,000 | 1,394,000
Preferred stock |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale, cost | 204,000 |
Available-for-sale, gross unrealized gain | 0 |
Available-for-sale, gross unrealized (loss) | (7,000) |
Available-for-sale, market value | 197,000 |
Corporate debt |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale, cost | 1,718,000 |
Available-for-sale, gross unrealized gain | 0 |
Available-for-sale, gross unrealized (loss) | (226,000) |
Available-for-sale, market value | 1,492,000 |
Venture capital investments |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale, cost | 168,000 | 168,000
Available-for-sale, gross unrealized gain | 0 | 0
Available-for-sale, gross unrealized (loss) | (5,000) | (5,000)
Available-for-sale, market value | 163,000 | 163,000
Offshore funds |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale, cost |  | 5,000,000
Available-for-sale, gross unrealized gain |  | 0
Available-for-sale, gross unrealized (loss) |  | (288,000)
Available-for-sale, market value |  | 4,712,000
Mutual funds |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale, cost | 2,727,000 | 2,027,000
Available-for-sale, gross unrealized gain | 61,000 | 760,000
Available-for-sale, gross unrealized (loss) | (29,000) | (3,000)
Available-for-sale, market value | $ 2,759,000 | $ 2,784,000

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- Definition Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax + References No definition available. + Details
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- Definition Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax + References No definition available. + Details
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- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Investments in debt and equity securities which are categorized neither as held-to-maturity nor trading and which are intended to be sold or mature more than one year from the balance sheet date or operating cycle, if longer. Such securities are reported at fair value; unrealized gains (losses) related to Available-for-sale Securities are excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain (loss) of an Available-for-sale security that is designated as being hedged in a fair value hedge is recognized in earnings during the period of the hedge, as are other than temporary declines in fair value below the cost basis for investments in equity securities and debt securities that an entity intends to sell or it is more likely than not that it will be required to sell before the recovery of its amortized cost basis. Other than temporary declines in fair value below the cost basis for debt securities categorized as Available-for-sale that an entity does not intend to sell and for which it is not more likely than not that the entity will be required to sell before the recovery of its amortized cost basis are bifurcated into credit losses and losses related to all other factors. Other than temporary declines in fair value below cost basis related to credit losses are recognized in earnings, and losses related to all other factors are recognized in other comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26626-111562 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Available-for-Sale Securities -URI http://asc.fasb.org/extlink&oid=6505594 + Details
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