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