PROPERTY, PLANT AND EQUIPMENT (Tables)

3 Months Ended

Mar. 31, 2024

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

Presented in the table below are the major classes of property, plant and equipment by category as of the below dates (in thousands):

	March 31, 2024
	Cost		Accumulated Depreciation		Net Book Value
Building	$	81,703	$	3,200	$	78,503
Machinery and equipment		353,576		28,660		324,916
Leasehold Improvements		3,017		1,612		1,405
Fixtures and Furnishings		736		203		533
Land improvements		150		35		115
Land		1,150		—		1,150
Construction in process		235,395		—		235,395
Total property, plant and equipment	$	675,727	$	33,710	$	642,017

	December 31, 2023
	Cost		Accumulated Depreciation		Net Book Value
Building	$	81,593	$	2,440	$	79,153
Machinery and equipment		349,796		20,415		329,381
Leasehold Improvements		2,972		1,447		1,525
Fixtures and Furnishings		711		177		534
Land improvements		150		32		118
Land		1,150		—		1,150
Construction in process		226,885		—		226,885
Total property, plant and equipment	$	663,257	$	24,511	$	638,746

Summary of Depreciation Expense

Depreciation expense is recorded in the condensed consolidated statements of comprehensive loss as follows:

	Three Months Ended March 31,
(in thousands)	2024		2023
Operating costs	$	8,322	$	388
Research and development expense		760		749
Selling, general, and administrative expense		174		157
Total depreciation expense	$	9,256	$	1,294