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Property, Plant and Equipment, Net | 12 Months Ended
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Dec. 31, 2019
Property, Plant and Equipment, Net [Abstract] |
Property, Plant and Equipment, Net | Property, Plant and Equipment, Net Property, plant and equipment, net includes the following:
| December 31
| 2019 |  | 2018
Coal lands and real estate | $ | 54,647 |  |  | $ | 56,716 |
Plant and equipment | 190,868 |  |  | 163,564 |
Property, plant and equipment, at cost | 245,515 |  |  | 220,280 |
Less allowances for depreciation, depletion and amortization | 107,454 |  |  | 95,726 |
| $ | 138,061 |  |  | $ | 124,554 |
Total depreciation, depletion and amortization expense on property, plant and equipment was $13.6 million and $11.6 million during 2019 and 2018, respectively.

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- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 + Details
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