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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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Amount, before accumulated amortization, of right-of-use asset from finance lease.

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