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Fair Value Measurements (Details Textuals) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Derivative Assets | $ 2,800 | $ 2,200
Derivative Liabilities | 12,400 | 23,300
Fair Value, Inputs, Level 2 [Member] |  |
Cash Equivalents | 18,000 | 14,300
Change in Carrying Value Verse Fair Value of Long Term Debt | 39,600 |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Derivative Assets | 2,849 | 2,227
Derivative Liabilities | $ 12,427 | $ 23,291

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