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Investments - Market Value, Cost, and Unrealized Gain or Loss on Investments (Detail) (USD $) | Dec. 31, 2013 | Jun. 30, 2013
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Amortized Cost And Fair Value Debt Securities [Abstract] |  |  |  |
Trading, market value | $ 18,640,758 |  | $ 4,758,220 |
Available-for-sale, market value | 7,343,679 |  | 9,053,111 |
Total investments, market value | 25,984,437 |  | 13,811,331 |
Trading, cost | 19,062,335 |  | 5,457,989 |
Available-for-sale, cost | 6,485,471 |  | 8,064,902 |
Total, cost | 25,547,806 |  | 13,522,891 |
Trading, unrealized gain (loss) | (421,577) | [1] | (699,769) | [1]
Available-for-sale securities, unrealized gain (loss) | 858,208 | [2] | 988,209 | [2]
Total, unrealized gain (loss) | 436,631 |  | 288,440 |
Available-for-sale, unrealized holding gains on available-for-sale securities | $ 566,417 |  | $ 652,218 |
[1] | Unrealized and realized gains and losses on trading securities are included in earnings in the statement of operations.
[2] | Unrealized gains and losses on available-for-sale securities are excluded from earnings and recorded in other comprehensive income as a separate component of shareholders’ equity until realized.

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- Details
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- Definition Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax + References No definition available. + Details
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- Definition Available-for-sale, Unrealized holding gains (losses) on available-for-sale securities, net of tax + References No definition available. + Details
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- Definition Marketable Securities total unrealized gain (loss). + References No definition available. + Details
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- Definition Trading and available for sale securities cost. + References No definition available. + Details
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- Definition Trading and available for sale securities. + References No definition available. + Details
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- Definition The unrealized gain (loss) on trading securities. + 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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- Definition Cost of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading. + References No definition available. + Details
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- Definition Amount of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading, expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer. + 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562 Reference 3: 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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Trading Securities -URI http://asc.fasb.org/extlink&oid=6526789 + Details
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