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Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Trade, allowance for credit losses | $ 163 | $ 90
Property, plant and equipment, net | 3,220,246 | 2,998,949
Construction-in-process | 837,205 | 814,967
Operating leases right of use | 27,318 | 24,057
Finance leases right of use | 3,216 | 3,510
Deferred financing costs, current | $ 28 | $ 29
Common stock, par value (in dollars per share) | $ 0.001 | $ 0.001
Common stock, shares authorized (in shares) | 200,000,000 | 200,000,000
Common stock, shares issued (in shares) | 60,421,682 | 60,358,887
Common stock, shares outstanding (in shares) | 60,421,682 | 60,358,887
Treasury stock, shares (in shares) | 258,667 | 258,667
Senior Secured Notes [Member] |  |
Deferred financing costs | $ 9,128 | $ 7,889
Senior Unsecured Bonds [Member] |  |
Deferred financing costs | 4,877 | 3,056
Convertible Senior Notes [Member] |  |
Deferred financing costs | 7,564 | 8,146
Variable Interest Entity, Primary Beneficiary [Member] |  |
Property, plant and equipment, net | 3,010,086 | 2,802,920
Construction-in-process | 349,731 | 376,602
Operating leases right of use | 10,334 | 9,326
Finance leases right of use | $ 0 | $ 0

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