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Investments - Fair Value Measurements on Recurring Basis (Details) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2014 | Jun. 30, 2013
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | $ 17,817 | [1] | $ 4,758 | [1]
Total available-for-sale securities | 6,196 | [2],[3] | 9,053 | [2],[3]
Total Investments | 24,013 |  | 13,811 |
Common stock - Domestic [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available-for-sale securities | 1,118 | [3] | 579 | [3]
Common stock - International [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available-for-sale securities | 1,409 | [3] | 815 | [3]
Offshore fund [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 998 | [1] | 786 | [1]
Total available-for-sale securities |  |  | 4,712 | [3]
Mutual funds - International equity [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value |  |  | 360 | [1]
Corporate debt [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available-for-sale securities | 1,632 | [3] |  |
Mutual funds - Fixed income [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 16,333 | [1] | 3,191 | [1]
Total available-for-sale securities | 1,247 | [3] | 1,004 | [3]
Mutual funds - Domestic equity [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 459 | [1] | 399 | [1]
Total available-for-sale securities | 550 | [3] | 1,766 | [3]
Other [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 27 | [1] | 22 | [1]
Total available-for-sale securities | 240 | [3] | 177 | [3]
Quoted Prices (Level 1) [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 16,819 |  | 3,972 |
Total available-for-sale securities | 4,853 |  | 4,083 |
Total Investments | 21,672 |  | 8,055 |
Quoted Prices (Level 1) [Member] | Common stock - Domestic [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available-for-sale securities | 1,118 |  | 579 |
Quoted Prices (Level 1) [Member] | Common stock - International [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available-for-sale securities | 1,406 |  | 720 |
Quoted Prices (Level 1) [Member] | Offshore fund [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 0 |  | 0 |
Total available-for-sale securities |  |  | 0 |
Quoted Prices (Level 1) [Member] | Mutual funds - International equity [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value |  |  | 360 |
Quoted Prices (Level 1) [Member] | Corporate debt [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available-for-sale securities | 292 |  |  |
Quoted Prices (Level 1) [Member] | Mutual funds - Fixed income [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 16,333 |  | 3,191 |
Total available-for-sale securities | 1,247 |  | 1,004 |
Quoted Prices (Level 1) [Member] | Mutual funds - Domestic equity [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 459 |  | 399 |
Total available-for-sale securities | 550 |  | 1,766 |
Quoted Prices (Level 1) [Member] | Other [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 27 |  | 22 |
Total available-for-sale securities | 240 |  | 14 |
Significant Other Inputs (Level 2) [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 998 |  | 786 |
Total available-for-sale securities | 1,093 |  | 4,712 |
Total Investments | 2,091 |  | 5,498 |
Significant Other Inputs (Level 2) [Member] | Common stock - Domestic [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available-for-sale securities | 0 |  | 0 |
Significant Other Inputs (Level 2) [Member] | Common stock - International [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available-for-sale securities | 3 |  | 0 |
Significant Other Inputs (Level 2) [Member] | Offshore fund [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 998 |  | 786 |
Total available-for-sale securities |  |  | 4,712 |
Significant Other Inputs (Level 2) [Member] | Mutual funds - International equity [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value |  |  | 0 |
Significant Other Inputs (Level 2) [Member] | Corporate debt [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available-for-sale securities | 1,090 |  |  |
Significant Other Inputs (Level 2) [Member] | Mutual funds - Fixed income [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 0 |  | 0 |
Total available-for-sale securities | 0 |  | 0 |
Significant Other Inputs (Level 2) [Member] | Mutual funds - Domestic equity [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 0 |  | 0 |
Total available-for-sale securities | 0 |  | 0 |
Significant Other Inputs (Level 2) [Member] | Other [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 0 |  | 0 |
Total available-for-sale securities | 0 |  | 0 |
Significant Unobservable Inputs (Level 3) [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 0 |  | 0 |
Total available-for-sale securities | 250 |  | 258 |
Total Investments | 250 |  | 258 |
Significant Unobservable Inputs (Level 3) [Member] | Common stock - Domestic [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available-for-sale securities | 0 |  | 0 |
Significant Unobservable Inputs (Level 3) [Member] | Common stock - International [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available-for-sale securities | 0 |  | 95 |
Significant Unobservable Inputs (Level 3) [Member] | Offshore fund [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 0 |  | 0 |
Total available-for-sale securities |  |  | 0 |
Significant Unobservable Inputs (Level 3) [Member] | Mutual funds - International equity [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value |  |  | 0 |
Significant Unobservable Inputs (Level 3) [Member] | Corporate debt [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available-for-sale securities | 250 |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Mutual funds - Fixed income [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 0 |  | 0 |
Total available-for-sale securities | 0 |  | 0 |
Significant Unobservable Inputs (Level 3) [Member] | Mutual funds - Domestic equity [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 0 |  | 0 |
Total available-for-sale securities | 0 |  | 0 |
Significant Unobservable Inputs (Level 3) [Member] | Other [Member] | Recurring basis [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Trading securities, at fair value | 0 |  | 0 |
Total available-for-sale securities | 0 |  | 163 |
Available-for-sale Securities [Member] | Significant Other Inputs (Level 2) [Member] | Corporate debt [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Total available-for-sale securities |  |  | $ 1,100 |
[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 June 30, 2014, are $1,345 and $888, 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 (loss) as a separate component of shareholders’ equity until realized.

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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: 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 + 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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