Refers to the number of contracts.

No definition available.

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The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

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- Definition

Amount of damages awarded to the plaintiff in the legal matter.

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- Definition

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.

+ References

No definition available.

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- Definition

Minimum amount to be expended to satisfy the terms of arrangements in which the entity has agreed to expend funds to procure goods or services, excluding long-term purchase commitments or unconditional purchase obligations.

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- Definition

Adjustment of the mine reclamation or mine shutdown liability account that is made when estimates of future costs are changed.

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Note 8 - Commitments and Contingencies (Details) $ in Millions			9 Months Ended
	Jul. 16, 2021 USD ($)	Jul. 15, 2021 USD ($)	Sep. 30, 2021 USD ($) contract
COMMITMENTS AND CONTINGENCIES
Asset Retirement Obligation			$ 15.8
Reclamation bonding requirements			0.3
Amount of award	$ 25.0	$ 7.7
Take-or-pay Purchase Commitments
COMMITMENTS AND CONTINGENCIES
Commitments			$ 4.6
Number of contracts \| contract			4