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Marketable Investment Securities | 9 Months Ended
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Mar. 31, 2017
Investments Debt And Equity Securities [Abstract] |
Marketable Investment Securities |
(3) | MARKETABLE INVESTMENT SECURITIES
The Company has classified its marketable investment securities as available-for-sale securities. These securities are carried at estimated fair value with unrealized holding gains and losses, net of the related tax effect, included in accumulated other comprehensive loss in stockholders’ equity until realized. Gains and losses on investment security transactions are reported on the specific-identification method. Dividend and interest income are recognized when earned. The amortized cost, gross unrealized holding gains, gross unrealized holding losses, and fair value for available-for-sale securities by major security type and class of security at March 31, 2017 and June 30, 2016 were as follows:
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
|  |  |  |  |  | unrealized |  |  | unrealized |  |  |  |  |
|  | Amortized |  |  | holding |  |  | holding |  |  | Estimated |
|  | cost |  |  | gains |  |  | losses |  |  | fair value |
At March 31, 2017: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash |  | $ | 106.6 |  |  | $ | — |  |  | $ | — |  |  | $ | 106.6 |
Cash equivalents |  |  | 17.2 |  |  |  | — |  |  |  | — |  |  | $ | 17.2 |
Total cash and cash equivalents |  |  | 123.8 |  |  |  | — |  |  |  | — |  |  |  | 123.8 |
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds and notes |  |  | 41.5 |  |  |  | — |  |  |  | (0.1 | ) |  |  | 41.4 |
Municipal bonds |  |  | 43.5 |  |  |  | — |  |  |  | — |  |  |  | 43.5 |
Federal agency issues |  |  | 11.6 |  |  |  | — |  |  |  | — |  |  |  | 11.6 |
US government securities |  |  | 5.2 |  |  |  | — |  |  |  | — |  |  |  | 5.2 |
Total |  | $ | 225.6 |  |  | $ | — |  |  | $ | (0.1 | ) |  | $ | 225.5 |
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
|  |  |  |  |  | unrealized |  |  | unrealized |  |  |  |  |
|  | Amortized |  |  | holding |  |  | holding |  |  | Estimated |
|  | cost |  |  | gains |  |  | losses |  |  | fair value |
At June 30, 2016: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash |  | $ | 66.1 |  |  | $ | — |  |  | $ | — |  |  | $ | 66.1 |
Cash equivalents |  |  | 2.4 |  |  |  | — |  |  |  | — |  |  |  | 2.4 |
Total cash and cash equivalents |  |  | 68.5 |  |  |  | — |  |  |  | — |  |  |  | 68.5 |
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds and notes |  |  | 50.8 |  |  |  | 0.2 |  |  |  | — |  |  |  | 51.0 |
Municipal bonds |  |  | 85.4 |  |  |  | 0.2 |  |  |  | — |  |  |  | 85.6 |
Federal agency issues |  |  | 25.5 |  |  |  | — |  |  |  | — |  |  |  | 25.5 |
US government securities |  |  | 8.2 |  |  |  | 0.1 |  |  |  | — |  |  |  | 8.3 |
Total |  | $ | 238.4 |  |  | $ | 0.5 |  |  | $ | — |  |  | $ | 238.9 |
Cash, cash equivalents, and maturities of debt securities classified as available-for-sale securities are as follows at March 31, 2017:
|  | Amortized |  |  | Estimated |
|  | cost |  |  | fair value |
Cash |  | $ | 106.6 |  |  | $ | 106.6 |
Cash equivalents |  |  | 17.2 |  |  |  | 17.2 |
Available-for-sale: |  |  |  |  |  |  |  |
Due within one year |  |  | 48.3 |  |  |  | 48.3 |
Due after one year through five years |  |  | 52.0 |  |  |  | 51.9 |
Due after five years |  |  | 1.5 |  |  |  | 1.5 |
Total |  | $ | 225.6 |  |  | $ | 225.5 |

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -Glossary Debt Security -URI http://asc.fasb.org/extlink&oid=6509901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27290-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -Glossary Equity Security -URI http://asc.fasb.org/extlink&oid=6511694 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27357-111563 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27405-111563 + Details
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