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Fair Value of Financial Instruments (Tables) | 9 Months Ended
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Mar. 31, 2021
Business Combinations [Abstract] |
Summary of Fair Value and Carrying Value of II-VI Notes and Finisar Notes | The fair value and carrying value of the II-VI Notes and Finisar Notes were as follows at March 31, 2021 ($000):
| Fair Value |  | Carrying Value
II-VI Notes | $ | 519,918 |  |  | $ | 324,563 |
Finisar Notes | 14,739 |  |  | 14,888 |

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- Definition Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements. + References No definition available. + Details
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