Deferred Consideration - Gold Payments - Summary of valuation of deferred consideration (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Disclosure Of Valuation Of Deferred Consideration [Line Item]
Discount rate	11.00%
Perpetual growth rate	1.30%
Minimum [Member]
Disclosure Of Valuation Of Deferred Consideration [Line Item]
Forward-looking gold price	$ 1,858
Maximum [Member]
Disclosure Of Valuation Of Deferred Consideration [Line Item]
Forward-looking gold price	3,126
Weighted Average [Member]
Disclosure Of Valuation Of Deferred Consideration [Line Item]
Forward-looking gold price	$ 2,237