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Redeemable Noncontrolling Interest (Details) - USD ($) $ in Thousands |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jan. 25, 2021 | Jan. 31, 2021 | Mar. 31, 2021 | Dec. 31, 2020
Noncontrolling Interest [Line Items] |  |  |  |
Issue of redeemable noncontrolling interests |  | $ 1,500 | $ 1,514 |
Investments, Approved by Government | $ 49,000 |  |  |
Beijing Tongmei Xtal Technology |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |
Issue of redeemable noncontrolling interests |  | $ 1,500 |  | $ 48,100
Redeemable non controlling interests ownership percentage |  |  |  | 7.06%
Investments, Approved by Government | $ 49,000 |  |  |
Percentage of Equity Issued on Conversion of Non Controlling Interests | 7.28% |  | 14.50% |

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- Details
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