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Note 6 - Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Right-of-use assets | $ 11,241 | $ 10,314
Property, plant and equipment, gross | 3,617,253 | 3,000,917
Less: Accumulated depreciation and amortization | (1,815,884) | (1,735,457)
Property, plant and equipment, net | 1,801,369 | 1,265,460
Other Capitalized Property Plant and Equipment [Member] |  |
Property, plant and equipment, gross | 2,412,978 | 1,916,048
Equipment [Member] |  |
Property, plant and equipment, gross | 314,304 | 283,831
Furniture and Fixtures [Member] |  |
Property, plant and equipment, gross | 455,612 | 463,469
Building and Leasehold Improvements[Member] |  |
Property, plant and equipment, gross | 138,807 | 117,367
Software and Software Development Costs [Member] |  |
Property, plant and equipment, gross | 86,178 | 107,107
Construction in Progress [Member] |  |
Property, plant and equipment, gross | 177,092 | 89,488
Land [Member] |  |
Property, plant and equipment, gross | $ 21,041 | $ 13,293

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