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STOCK-BASED COMPENSATION (Tables)
9 Months Ended
Sep. 30, 2024
Share-Based Payment Arrangement [Abstract]  
Schedule of Stock Awards Activity
The Company’s stock-based compensation was recorded as follows:
For the three months ended September 30,For the nine months ended September 30,
(in thousands)2024202320242023
Cost of sales (excluding depreciation, depletion and amortization) (including related party)$713 $842 $2,789 $2,759 
Selling, general and administrative4,532 5,193 15,070 15,603 
Start-up costs
134 254 369 651 
Advanced projects and development
74 395 28 
Total stock-based compensation expense$5,453 $6,298 $18,623 $19,041 
Stock-based compensation capitalized to property, plant and equipment, net
$491 $367 $597 $1,566