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Accrued Expenses (Schedule of Accrued Expenses) (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
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Accrued Expenses [Abstract] |  |
Salaries and benefits | $ 15,046 | $ 20,958
Real estate and property taxes | 9,178 | 9,583
Unpaid capital expenditures | 5,330 | 6,073
Other | 27,664 | 26,417
Total accrued expenses | $ 57,218 | $ 63,031

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