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Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 10, 2021	Apr. 03, 2018
Cash dividend rate declared, per common share	$ 0.04	$ 0.04
Dividend per share declared and paid	$ 0.04	$ 0.0433
Dividends declared		$ 3.1
Dividends paid	$ 3.5	$ 3.4
ATM Agreement
Number of common stock sold	0	0
Aquila Resources Inc.
Common stock issued for the acquisition of mineral properties (in share)		13,714,630
Share issue price ( in dollars per share)		$ 1.79
Percentage of voting equity interests acquired		100.00%	100.00%
Maximum | ATM Agreement
Common stock aggregate gross sales price				$ 75.0

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