XML 121 R40.htm IDEA: XBRL DOCUMENT v3.22.4
Miscellaneous Other Income (Tables)
12 Months Ended
Dec. 31, 2022
Other Income and Expenses [Abstract]  
Schedule of Other Income (Loss)
For the Years Ended December 31,
202220212020
Royalty Income - Non-Operated Coal$10,258 $8,661 $12,032 
Interest Income6,031 3,287 1,230 
Rental Income2,239 1,095 1,314 
Sale of Certain Mining Rights— 21,756 39,437 
Contract Buyout— — 44,703 
Sale of Certain Coal Lease Contracts— — 17,847 
Other5,826 3,595 10,323 
Miscellaneous Other Income$24,354 $38,394 $126,886