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Income Taxes (Schedule Of Income (Loss) Before Income Tax Expense) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Income Tax Disclosure [Line Items] |  |  |
Income (loss) before income taxes and equity earnings of unconsolidated joint ventures | $ (70,375) | $ 1,542 | $ 16,490
Equity earnings (loss) of unconsolidated joint ventures | (449) | 792 | 974
Income (loss) before income taxes | (70,824) | 2,334 | 17,464
United States [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Income (loss) before income taxes and equity earnings of unconsolidated joint ventures | (56,709) | (11,539) | (3,493)
Equity earnings (loss) of unconsolidated joint ventures |  |  |
Foreign [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Income (loss) before income taxes and equity earnings of unconsolidated joint ventures | (13,666) | 13,081 | 19,983
Equity earnings (loss) of unconsolidated joint ventures | $ (449) | $ 792 | $ 974

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