XML 64 R41.htm IDEA: XBRL DOCUMENT v3.22.1
Assets Held For Sale (Tables)
12 Months Ended
Dec. 31, 2021
Asset Retirement Obligation Disclosure [Abstract]  
Disclosure of long lived assets held-for-sale The following table summarizes the Company's Assets held for sale by asset class as of December 31, 2021 and 2020 (dollars in thousands):
December 31,
2021
December 31,
2020
Equipment not in use$11,163 $— 
Mine equipment125 — 
Materials and supplies270 — 
Total$11,558 $—