​

​

Three Months Ended March 31, 

​

  ​ ​ ​

2026

  ​ ​ ​

2025

Contingent decommissioning obligations, beginning of period

​

$

36,157

​

$

22,551

Liabilities settled

​

(1,695)

​

(1,377)

Accrual for additional estimated liabilities

​

—

​

196

Contingent decommissioning obligations, end of period

​

​

34,462

​

​

21,370

Less: Current portion

​

(8,717)

​

—

Long-term

​

$

25,745

​

$

21,370