Commitments (Tables)

9 Months Ended

Sep. 30, 2022

Commitments [Abstract]

Future Minimum Royalties

(in US$ thousands)

Amount

Year ending December 31,

2022

$

3,487

2023

4,868

2024

4,771

2025

4,643

2026

4,581

Thereafter

23,056

Total

$

45,406

Mineral leases are not in scope of ASC 842 and continue to be accounted for under the guidance in ASC 932,

Extractive Activities – Mining.