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Fair Value Disclosures - Fair Value Measurements on Recurring Basis (Detail) (USD $) | Mar. 31, 2014 | Jun. 30, 2013
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Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | $ 18,645,573 | [1] | $ 4,758,220 | [1]
Available-for-sale, fair value | 6,240,626 | [2],[3] | 9,053,111 | [2],[3]
Total Investments Measured at Fair Value on a Recurring Basis | 25,300,000 |  |  |
Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 18,645,573 |  | 4,758,220 |
Available-for-sale, fair value | 6,240,626 |  | 9,053,111 |
Total Investments Measured at Fair Value on a Recurring Basis | 24,887,000 |  | 13,811,000 |
Common stock - Domestic |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Available-for-sale, fair value | 788,000 | [3] | 579,000 | [3]
Common stock - Domestic | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Available-for-sale, fair value | 788,000 |  | 579,000 |
Common stock - International |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Available-for-sale, fair value | 1,355,000 | [3] | 815,000 | [3]
Common stock - International | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Available-for-sale, fair value | 1,355,000 |  | 815,000 |
Corporate debt |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Available-for-sale, fair value | 1,724,000 | [3] |  |
Corporate debt | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Available-for-sale, fair value | 1,724,000 |  |  |
Offshore fund |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 874,000 | [1] | 786,000 | [1]
Available-for-sale, fair value |  |  | 4,712,000 | [3]
Offshore fund | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 874,000 |  | 786,000 |
Available-for-sale, fair value |  |  | 4,712,000 |
Mutual funds - Emerging markets |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value |  |  | 360,000 | [1]
Mutual funds - Emerging markets | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value |  |  | 360,000 |
Mutual funds - Fixed income |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 17,300,000 | [1] | 3,191,000 | [1]
Available-for-sale, fair value | 1,481,000 | [3] | 1,004,000 | [3]
Mutual funds - Fixed income | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 17,300,000 |  | 3,191,000 |
Available-for-sale, fair value | 1,481,000 |  | 1,004,000 |
Mutual funds - Domestic equity |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 455,000 | [1] | 399,000 | [1]
Available-for-sale, fair value | 658,000 | [3] | 1,766,000 | [3]
Mutual funds - Domestic equity | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 455,000 |  | 399,000 |
Available-for-sale, fair value | 658,000 |  | 1,766,000 |
Other |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 17,000 | [1] | 22,000 | [1]
Available-for-sale, fair value | 235,000 | [3] | 177,000 | [3]
Other | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 17,000 |  | 22,000 |
Available-for-sale, fair value | 235,000 |  | 177,000 |
Quoted Prices (Level 1) | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 17,772,000 |  | 3,972,000 |
Available-for-sale, fair value | 4,862,000 |  | 4,083,000 |
Total Investments Measured at Fair Value on a Recurring Basis | 22,634,000 |  | 8,055,000 |
Quoted Prices (Level 1) | Common stock - Domestic | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Available-for-sale, fair value | 788,000 |  | 579,000 |
Quoted Prices (Level 1) | Common stock - International | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Available-for-sale, fair value | 1,355,000 |  | 720,000 |
Quoted Prices (Level 1) | Corporate debt | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Available-for-sale, fair value | 345,000 |  |  |
Quoted Prices (Level 1) | Offshore fund | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 0 |  | 0 |
Available-for-sale, fair value |  |  | 0 |
Quoted Prices (Level 1) | Mutual funds - Emerging markets | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value |  |  | 360,000 |
Quoted Prices (Level 1) | Mutual funds - Fixed income | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 17,300,000 |  | 3,191,000 |
Available-for-sale, fair value | 1,481,000 |  | 1,004,000 |
Quoted Prices (Level 1) | Mutual funds - Domestic equity | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 455,000 |  | 399,000 |
Available-for-sale, fair value | 658,000 |  | 1,766,000 |
Quoted Prices (Level 1) | Other | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 17,000 |  | 22,000 |
Available-for-sale, fair value | 235,000 |  | 14,000 |
Significant Other Inputs (Level 2) | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 874,000 |  | 786,000 |
Available-for-sale, fair value | 1,129,000 |  | 4,712,000 |
Total Investments Measured at Fair Value on a Recurring Basis | 2,003,000 |  | 5,498,000 |
Significant Other Inputs (Level 2) | Common stock - Domestic | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Available-for-sale, fair value | 0 |  | 0 |
Significant Other Inputs (Level 2) | Common stock - International | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Available-for-sale, fair value | 0 |  | 0 |
Significant Other Inputs (Level 2) | Corporate debt | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Available-for-sale, fair value | 1,129,000 |  |  |
Significant Other Inputs (Level 2) | Offshore fund |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Available-for-sale, fair value |  |  | 4,712,205 |
Significant Other Inputs (Level 2) | Offshore fund | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 874,000 |  | 786,000 |
Available-for-sale, fair value |  |  | 4,712,000 |
Significant Other Inputs (Level 2) | Mutual funds - Emerging markets | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value |  |  | 0 |
Significant Other Inputs (Level 2) | Mutual funds - Fixed income | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 0 |  | 0 |
Available-for-sale, fair value | 0 |  | 0 |
Significant Other Inputs (Level 2) | Mutual funds - Domestic equity | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 0 |  | 0 |
Available-for-sale, fair value | 0 |  | 0 |
Significant Other Inputs (Level 2) | Other | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 0 |  | 0 |
Available-for-sale, fair value | 0 |  | 0 |
Significant Unobservable Inputs (Level 3) | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 0 |  | 0 |
Available-for-sale, fair value | 250,000 |  | 258,000 |
Total Investments Measured at Fair Value on a Recurring Basis | 250,000 |  | 258,000 |
Significant Unobservable Inputs (Level 3) | Common stock - Domestic | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Available-for-sale, fair value | 0 |  | 0 |
Significant Unobservable Inputs (Level 3) | Common stock - International | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Available-for-sale, fair value | 0 |  | 95,000 |
Significant Unobservable Inputs (Level 3) | Corporate debt | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Available-for-sale, fair value | 250,000 |  |  |
Significant Unobservable Inputs (Level 3) | Offshore fund | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 0 |  | 0 |
Available-for-sale, fair value |  |  | 0 |
Significant Unobservable Inputs (Level 3) | Mutual funds - Emerging markets | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value |  |  | 0 |
Significant Unobservable Inputs (Level 3) | Mutual funds - Fixed income | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 0 |  | 0 |
Available-for-sale, fair value | 0 |  | 0 |
Significant Unobservable Inputs (Level 3) | Mutual funds - Domestic equity | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 0 |  | 0 |
Available-for-sale, fair value | 0 |  | 0 |
Significant Unobservable Inputs (Level 3) | Other | Recurring basis |  |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 0 |  | 0 |
Available-for-sale, fair value | $ 0 |  | $ 163,000 |
[1] | Unrealized and realized gains and losses on trading securities are included in earnings in the statement of operations.
[2] | Net unrealized gains on available-for-sale securities gross and net of tax as of March 31, 2014, are $1,129 and $745, respectively, and as of June 30, 2013, are $988 and $652, respectively.
[3] | 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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- 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 Amount of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading. + References Reference 1: 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 2: 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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 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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