v3.26.1
Note 11 - Major Customers (Tables)
3 Months Ended
Mar. 31, 2026
Notes Tables  
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
  

For the Three Months Ended March 31,

 
  

2026

  

2025

 

(In thousands)

 

Revenues

  

Percent

  

Revenues

  

Percent

 

Alpha Metallurgical Resources, Inc. (1)

 $13,701   29% $13,176   24%

Foresight Energy Resources LLC ("Foresight") (1)

 $13,497   29% $16,460   30%

Alabama Kanu Holdings, LLC (1)

 $4,730   10% $3,258   6%