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FAIR VALUE DISCLOSURES - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 Months Ended
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Sep. 30, 2014 | Jun. 30, 2014 | Sep. 30, 2014 Quoted Prices (Level 1) | Jun. 30, 2014 Quoted Prices (Level 1) | Sep. 30, 2014 Significant Other Inputs (Level 2) | Jun. 30, 2014 Significant Other Inputs (Level 2) | Sep. 30, 2014 Significant Unobservable Inputs (Level 3) | Jun. 30, 2014 Significant Unobservable Inputs (Level 3) | Sep. 30, 2014 Offshore fund | Jun. 30, 2014 Offshore fund | Sep. 30, 2014 Offshore fund Significant Other Inputs (Level 2) Energy and natural resources sectors | Sep. 30, 2014 Corporate debt | Jun. 30, 2014 Corporate debt | Sep. 30, 2014 Corporate debt Significant Other Inputs (Level 2) | Sep. 30, 2014 Trading securities Offshore fund Significant Other Inputs (Level 2)
Fair Value Assets Liabilities Quantitative Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of financial assets derived from Level 1 inputs measured at fair value |  |  | 91.00% | 90.00% |  |  |  |  |  |  |  |  |  |  |
Percentage of financial assets derived from Level 2 inputs measured at fair value |  |  |  |  | 8.00% | 9.00% |  |  |  |  |  |  |  |  |
Percentage of financial assets derived from Level 3 inputs measured at fair value |  |  |  |  |  |  | 1.00% | 1.00% |  |  |  |  |  |  |
Trading, fair value | $ 17,586 | $ 17,817 |  |  |  |  |  |  | $ 794 | $ 998 | $ 794 |  |  |  |
Minimum redemption notice period of investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 45 days
Investments, fair value |  |  |  |  |  |  |  |  |  |  |  |  |  | 977 |
Available-for-sale, fair value | $ 5,552 | $ 6,196 |  |  |  |  |  |  |  |  |  | $ 1,419 | $ 1,632 |  |

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- Definition Percentage of financial assets derived from Level 1 inputs measured at fair value. + References No definition available. + 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 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 -Glossary Trading Securities -URI http://asc.fasb.org/extlink&oid=6526789 Reference 4: 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 + Details
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