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Fair Value of Financial Instruments (Tables) | 12 Months Ended
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Jun. 30, 2020
Business Combinations [Abstract] |
Summary of Fair Value and Carrying Value of Convertible Notes | The fair value and carrying value of the II-VI Notes and Finisar Notes were as follows at June 30, 2020 ($000):
|  | Fair Value |  | Carrying Value
II-VI Notes |  | $ | 413,379 |  |  | $ | 314,312 |
Finisar Notes |  | $ | 14,404 |  |  | $ | 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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