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v3.21.1

Subsequent Events (Details) $ in Thousands |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Jan. 25, 2021 USD ($) | Feb. 28, 2021 USD ($) | Jan. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Subsequent Events |  |  |  |  |  |
Issue of redeemable noncontrolling interests |  |  |  |  | $ 48,102 |
Investments, equity method |  |  |  | $ 6,376 | $ 6,376 | $ 5,961
Subsequent Event |  |  |  |  |  |
Subsequent Events |  |  |  |  |  |
Issue of redeemable noncontrolling interests | $ 1,500 |  |  |  |  |
Investments, government approved | $ 49,000 |  |  |  |  |
Subsequent Event | ChaoYang XinMei |  |  |  |  |  |
Subsequent Events |  |  |  |  |  |
Investment value, agreement amount |  | $ 3,000 |  |  |  |
Investments, equity method |  | $ 1,800 |  |  |  |
Ownership (as a percent) |  | 58.50% |  |  |  |
Initial funding |  | $ 1,500 |  |  |  |
Beijing Tongmei Xtal Technology |  |  |  |  |  |
Subsequent Events |  |  |  |  |  |
Issue of redeemable noncontrolling interests |  |  |  | $ 48,100 |  |
Beijing Tongmei Xtal Technology | Subsequent Event |  |  |  |  |  |
Subsequent Events |  |  |  |  |  |
Private equity ownership percentage | 7.28% |  |  |  |  |
Additional percentage of ownership, consolidated method |  |  | 0.55 |  |  |
Purchase of subsidiary shares from noncontrolling interest |  |  | $ 3,730 |  |  |
Percentage of ownership, consolidated method (in hundredths) |  |  | 85.50% |  |  |
Beijing Tongmei Xtal Technology | Subsequent Event | ChaoYang XinMei |  |  |  |  |  |
Subsequent Events |  |  |  |  |  |
Investment amount |  | $ 900 |  |  |  |

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