XML 37 R26.htm IDEA: XBRL DOCUMENT v3.20.2
Asset Retirement Obligations (Tables)
 6 Months Ended
Jun. 30, 2020
Asset Retirement Obligation Disclosure [Abstract]  
Changes in Asset Retirement Obligation Liabilities
The components of the changes in the asset retirement obligation liabilities were:
(Dollars in thousands)
 
Short-Term
Portion
 
Long-Term
Portion
 
Total
Balance at January 1, 2020
 
$
90

 
$
6,061

 
$
6,151

Accretion
 
(19
)
 
254

 
235

Amounts paid
 
(136
)
 
—

 
(136
)
Reclassifications
 
169

 
(169
)
 
—

Balance at June 30, 2020
 
$
104

 
$
6,146

 
$
6,250