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Fair Value Measurements (Tables) | 12 Months Ended
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Jun. 30, 2016
Fair Value Disclosures [Abstract] |
Schedule of Fair Value of Financial Assets | The following table sets forth the fair value of the Company’s financial assets that are re-measured on a regular basis:
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
June 30, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds (a) |  | $ | 2.4 |  |  | $ | — |  |  | $ | — |  |  | $ | 2.4 |
Corporate bonds and notes |  |  | — |  |  |  | 51.0 |  |  |  | — |  |  |  | 51.0 |
Municipal bonds |  |  | — |  |  |  | 85.6 |  |  |  | — |  |  |  | 85.6 |
Federal agency issues |  |  | — |  |  |  | 25.5 |  |  |  | — |  |  |  | 25.5 |
US government securities |  |  | — |  |  |  | 8.3 |  |  |  | — |  |  |  | 8.3 |
Total |  | $ | 2.4 |  |  | $ | 170.4 |  |  | $ | — |  |  | $ | 172.8 |
| (a) | Money market funds are primarily comprised of exchange traded funds and accrued interest
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
June 30, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds (a) |  | $ | 2.4 |  |  | $ | — |  |  | $ | — |  |  | $ | 2.4 |
Corporate bonds and notes |  |  | — |  |  |  | 44.8 |  |  |  | — |  |  |  | 44.8 |
Municipal bonds |  |  | — |  |  |  | 70.3 |  |  |  | — |  |  |  | 70.3 |
Federal agency issues |  |  | — |  |  |  | 13.2 |  |  |  | — |  |  |  | 13.2 |
Total |  | $ | 2.4 |  |  | $ | 128.3 |  |  | $ | — |  |  | $ | 130.7 |
| (a) | Money market funds are primarily comprised of exchange traded funds and accrued interest

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- Definition Tabular disclosure of assets measured at fair value measured on a recurring or nonrecurring basis. Includes, but is not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
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