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Unconsolidated Subsidiaries (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Variable Interest Entity [Line Items] |  |  |  |  |
Investments in unconsolidated subsidiaries and related tax positions | $ 20,927 |  | $ 20,927 |  | $ 28,978
Variable interest entity, reporting entity involvement, maximum risk of loss | 5,500 |  | 5,500 |  | 6,500
Earnings of unconsolidated operations | 13,542 | $ 13,778 | 28,884 | $ 29,781 |
Other noncurrent assets |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Investments in unconsolidated subsidiaries and related tax positions | $ 20,900 |  | $ 20,900 |  | $ 29,000

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