HREE Production Project Agreement, Stage II Optimization Contribution

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Proceeds From Government Reimbursements For Property, Plant And Equipment

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Technology Investment Agreement, Stage II Optimization Contribution

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Amount of increase (decrease) in accumulated depreciation, depletion and amortization of property, plant and equipment.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount of acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Amount of increase (decrease) of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of increase (decrease) of physical assets used in the normal conduct of business and not intended for resale, from reclassification, impairment, donation, or changes classified as other. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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PROPERTY, PLANT AND EQUIPMENT - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Feb. 28, 2022	Nov. 30, 2020
Property, Plant and Equipment [Line Items]
Capitalized expenditures		$ 361,200,000	$ 138,000,000	$ 26,200,000
Assets transferred	$ 121,000,000
Proceeds from government awards used for construction		5,130,000	4,382,000	0
Technology investment agreement, stage II optimization contribution	100,000	100,000				$ 9,600,000
Optimization contribution					$ 35,000,000
Decrease in property, plant and equipment		10,400,000	8,700,000
Decrease in depreciation expense		2,700,000	1,100,000
Asset impairment charges		0	0	$ 0
Assets under construction
Property, Plant and Equipment [Line Items]
Decrease in property, plant and equipment		6,700,000	3,200,000
Buildings and building improvements
Property, Plant and Equipment [Line Items]
Decrease in property, plant and equipment		$ 600,000	2,000,000
Machinery and equipment
Property, Plant and Equipment [Line Items]
Assets transferred	$ 115,200,000
Decrease in property, plant and equipment			$ 2,400,000