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Property, Plant and Equipment, Net (Tables)
 12 Months Ended
Dec. 31, 2017
Property, Plant and Equipment, Net [Abstract]  
Property, Plant and Equipment
Property, plant and equipment, net includes the following:
 
December 31
 
2017
 
2016
Coal lands and real estate:
 
 
 
NACoal
$
53,576

 
$
48,636

NACCO and Other
469

 
469

 
54,045

 
49,105

Plant and equipment:
 
 
 
NACoal
151,145

 
141,440

NACCO and Other
2,531

 
5,007

 
153,676

 
146,447

Property, plant and equipment, at cost
207,721

 
195,552

Less allowances for depreciation, depletion and amortization
87,653

 
80,446

 
$
120,068

 
$
115,106