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Marketable Investment Securities | 3 Months Ended
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Sep. 30, 2020
Investments, Debt and Equity Securities [Abstract] |
Marketable Investment Securities | MARKETABLE INVESTMENT SECURITIES The Company has classified its debt 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 Company’s cash equivalents consist of short-term, highly liquid investments that are readily convertible to known amounts of cash. 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 September 30, 2020 and June 30, 2020 were as follows:
| Amortized cost |  | Gross unrealized holding gains |  | Gross unrealized holding losses |  | Estimated fair value
At September 30, 2020: |  |  |  |  |  |  |
Cash and cash equivalents: |  |  |  |  |  |  |
Cash | $ | 68.3 |  |  | $ | — |  |  | $ | — |  |  | $ | 68.3 |
Cash equivalents | 50.0 |  |  | — |  |  | — |  |  | $ | 50.0 |
Total cash and cash equivalents | 118.3 |  |  | — |  |  | — |  |  | 118.3 |
Available-for-sale: |  |  |  |  |  |  |
Corporate bonds and notes | 40.5 |  |  | 0.6 |  |  | — |  |  | 41.1 |
Municipal bonds | 12.6 |  |  | 0.2 |  |  | — |  |  | 12.8 |
Federal agency issues | 4.0 |  |  | 0.1 |  |  | — |  |  | 4.1 |
US government securities | 14.2 |  |  | 0.1 |  |  | — |  |  | 14.3 |
Total | $ | 189.6 |  |  | $ | 1.0 |  |  | $ | — |  |  | $ | 190.6 |
| Amortized cost |  | Gross unrealized holding gains |  | Gross unrealized holding losses |  | Estimated fair value
At June 30, 2020: |  |  |  |  |  |  |
Cash and cash equivalents: |  |  |  |  |  |  |
Cash | $ | 132.8 |  |  | $ | — |  |  | $ | — |  |  | $ | 132.8 |
Cash equivalents | 30.9 |  |  | — |  |  | — |  |  | 30.9 |
Total cash and cash equivalents | 163.7 |  |  | — |  |  | — |  |  | 163.7 |
Available-for-sale: |  |  |  |  |  |  |
Corporate bonds and notes | 50.1 |  |  | 0.8 |  |  | — |  |  | 50.9 |
Municipal bonds | 17.8 |  |  | 0.2 |  |  | — |  |  | 18.0 |
Federal agency issues | 5.5 |  |  | 0.1 |  |  | — |  |  | 5.6 |
US government securities | 16.4 |  |  | 0.2 |  |  | — |  |  | 16.6 |
Total | $ | 253.5 |  |  | $ | 1.3 |  |  | $ | — |  |  | $ | 254.8 |
In accordance with the adoption of ASC 2016-13, the Company assesses any unrealized loss positions for available-for-sale debt securities for which an allowance for credit losses has not been recorded. The aggregate amount of unrealized losses of these securities was not significant, and the impact of the securities in a continuous loss position to the condensed consolidated statements of operations and comprehensive loss were not material as of September 30, 2020. Cash, cash equivalents, and maturities of debt securities classified as available-for-sale securities are as follows at September 30, 2020:
| Amortized cost |  | Estimated fair value
Cash | $ | 68.3 |  |  | $ | 68.3 |
Cash equivalents | 50.0 |  |  | 50.0 |
Available-for-sale: |  |  |
Due within one year | 41.8 |  |  | 42.1 |
Due after one year through five years | 29.5 |  |  | 30.2 |
Due after five years | — |  |  | — |
Total | $ | 189.6 |  |  | $ | 190.6 |

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2209399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2324412 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2176304 + Details
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