Refers to the number of contracts.

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount awarded from other party in judgment or settlement of litigation.

+ References

No definition available.

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- Definition

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

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+ 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 7 - Commitments and Contingencies (Details) $ in Millions		1 Months Ended	9 Months Ended
	Mar. 04, 2022 USD ($)	Jul. 31, 2021 USD ($)	Sep. 30, 2022 USD ($) contract
Settled Litigation
COMMITMENTS AND CONTINGENCIES
Compensatory damages	$ 1.8	$ 7.7
Award to cover inconvenience and aggravation		$ 25.0
Surety Bond
COMMITMENTS AND CONTINGENCIES
Asset Retirement Obligation			$ 22.6
Reclamation bonding requirements			0.3
Take-or-pay Purchase Commitments
COMMITMENTS AND CONTINGENCIES
Commitments			$ 5.4
Number of contracts \| contract			3