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Inventories (Tables)

3 Months Ended

Mar. 31, 2019

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories are summarized as follows:

	MARCH 31 2019				DECEMBER 31 2018
Coal	$	10,677			$	11,030
Mining supplies	22,122				20,179
Total inventories	$	32,799			$	31,209

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- References

No definition available.

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- Definition

Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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