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Acquisitions - Additional Information (Detail) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Nov. 08, 2018 $ / shares | Jun. 30, 2020 USD ($) | Mar. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Sep. 30, 2018 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2018 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Cost of goods sold |  | $ 444,153 | $ 381,108 | $ 517,991 | $ 217,269 | $ 224,076 | $ 215,212 | $ 211,333 | $ 190,526 | $ 1,560,521 | $ 841,147 | $ 696,591
Goodwill |  | 1,239,009 |  |  |  | $ 319,778 |  |  |  | 1,239,009 | $ 319,778 | $ 270,678
Finisar Corporation |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Percentage of aggregate Merger Consideration in cash | 60.00% |  |  |  |  |  |  |  |  |  |  |
Percentage of aggregate Merger Consideration in stock | 40.00% |  |  |  |  |  |  |  |  |  |  |
Acquisition related costs |  |  |  |  |  |  |  |  |  | 44,400 |  |
Business acquisition, revenue of acquired entity |  |  |  |  |  |  |  |  |  | 938,400 |  |
Business acquisition, net loss of acquired entity |  |  |  |  |  |  |  |  |  | 94,600 |  |
Amortization |  |  |  |  |  |  |  |  |  | 47,400 |  |
Restructuring and related charges |  |  |  |  |  |  |  |  |  | 26,100 |  |
Goodwill |  | $ 919,192 |  |  | $ 759,239 |  |  |  |  | 919,192 |  |
Finisar Corporation | Proration Adjustment |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Common stock stock price (in usd per share) | $ / shares | $ 46.88 |  |  |  |  |  |  |  |  |  |  |
Finisar Corporation | Fair Value Adjustment to Inventory |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Cost of goods sold |  |  |  |  |  |  |  |  |  | $ 87,700 |  |
Finisar Corporation | Cash Consideration |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Acquisition, cash consideration per share (in usd per share) | $ / shares | 26.00 |  |  |  |  |  |  |  |  |  |  |
Finisar Corporation | Cash Consideration | Proration Adjustment |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Acquisition, cash consideration per share (in usd per share) | $ / shares | $ 15.94 |  |  |  |  |  |  |  |  |  |  |
Business acquisition number of shares to be received by acquiree (in shares) | 0.2146 |  |  |  |  |  |  |  |  |  |  |
Finisar Corporation | Stock Consideration |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Business acquisition number of shares to be received by acquiree (in shares) | 0.5546 |  |  |  |  |  |  |  |  |  |  |
Finisar Corporation | Mixed Consideration |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Acquisition, cash consideration per share (in usd per share) | $ / shares | $ 15.60 |  |  |  |  |  |  |  |  |  |  |
Business acquisition number of shares to be received by acquiree (in shares) | 0.2218 |  |  |  |  |  |  |  |  |  |  |

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