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The number of shares converted from each common unit.

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Amount of incremental value from equity vesting provision in share based compensation payment arrangement.

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The percent of dividend on tracking stock from financial performance of carbon ore rare earth assets.

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The per share amount of a dividend declared, but not paid, during the financial reporting period for a tracking stock.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Aggregate dividends paid during the period for each share of common stock outstanding.

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Aggregate dividends declared during the period for each share of common stock outstanding.

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Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock.

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Note 6 - Equity - Summary of Restricted Awards Activity (Details) $ / shares in Units, $ in Thousands				3 Months Ended
	Mar. 15, 2024 USD ($)	Mar. 15, 2023 USD ($) $ / shares	Dec. 08, 2022 $ / shares	Mar. 31, 2024 USD ($) $ / shares shares	Mar. 31, 2023 USD ($)	Jun. 30, 2022	Feb. 01, 2024 $ / shares	Dec. 06, 2023 $ / shares	Dec. 31, 2022 USD ($)
Compensation costs				$ 4,700	$ 2,900
Incremental compensation costs associated with modifications				1,200
Incremental value				1,800
Reversal of previously recognized compensation expense				600
Pre-modified restricted stock award				300
Forfeiture of restricted stock units and performance stock units				300
Dividend declared \| $ / shares			$ 0.125
Dividend payable		$ 5,600		$ 33	$ 322				$ 5,500
Dividends paid \| $ / shares		$ 0.125
Percentage dividend from financial performance of carbon						20
Class A Common Stock
Dividends paid amount	$ 6,000
Payment of dividends	6,100
Per share amount of a dividend declared \| $ / shares								$ 0.1375
Class B Common Stock
Granted (in shares) \| shares				0
Dividend payable per share \| $ / shares							$ 0.2416
Payment of dividends	$ 2,100
Restricted Stock
Fair value of awards				$ 2,500
Vesting period				3 years
Restricted Stock Units
Granted (in shares) \| shares				302,699
Granted, Weighted average grant date fair value (in dollars per share) \| $ / shares				$ 17.58
Fair value of awards				$ 5,300
Vesting period				3 years
Shares delivered per unit awarded \| shares				1
Payment of dividends				$ 100
Performance Stock Units
Vesting period				3 years
Executives and Employees \| Restricted Stock
Granted (in shares) \| shares				179,028
Fair value of awards				$ 3,100
Executives and Employees \| Performance Stock Units
Granted (in shares) \| shares				315,941
Granted, Weighted average grant date fair value (in dollars per share) \| $ / shares				$ 28.72
Fair value of awards				$ 9,100
Vesting period				3 years
Shares delivered per unit awarded \| shares				1
Executives and Employees \| Performance Stock Units \| Minimum
Potential earnings (as a percentage)				0.00%
Executives and Employees \| Performance Stock Units \| Maximum
Potential earnings (as a percentage)				200.00%
Directors \| Restricted Stock
Fair value of awards				$ 600