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Organization And Summary Of Significant Accounting Policies (Details) | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2022 major_product_categories shares | Jun. 30, 2022 major_product_categories shares | Jun. 30, 2021 shares | Dec. 31, 2021 | Apr. 26, 2018 $ / shares shares
Accounting Policies [Abstract] |  |  |  |  |
Shares, Issued |  |  |  |  | 38,097,525
Sale of Stock, Price Per Share | $ / shares |  |  |  |  | $ 15.00
Number of major product categories | major_product_categories | 2 | 2 |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  | 30.00% |  |
Shares repurchased and retired (shares) | 3,626,591 | 6,662,421 | 0 |  |
GrafTech International Ltd | Brookfield |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Equity Method Investment, Ownership Percentage | 24.90% | 24.90% |  | 24.30% |

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