XML 63 R38.htm IDEA: XBRL DOCUMENT v3.8.0.1
Asset Retirement Obligations (Tables)
 12 Months Ended
Dec. 31, 2017
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of Change in Asset Retirement Obligation
A reconciliation of the Company's beginning and ending aggregate carrying amount of the asset retirement obligations are as follows:
 
 
NACCO
Consolidated
Balance at January 1, 2016
 
$
43,592

Liabilities settled during the period
 
(2,321
)
Accretion expense
 
2,659

Revision of estimated cash flows
 
(1,825
)
Balance at December 31, 2016
 
$
42,105

Liabilities incurred during the period
 
277

Liabilities settled during the period
 
(2,430
)
Accretion expense
 
2,749

Revision of estimated cash flows
 
(2,604
)
Balance at December 31, 2017
 
$
40,097