XML 58 R13.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2

INVENTORIES

12 Months Ended

Dec. 31, 2019

INVENTORIES

INVENTORIES

5. INVENTORIES

​

Inventories consist of the following:

​

​	​	​	​	​	​	​	​
​	​	December 31,					​
​	​	2019			2018
​	​	(in thousands)					​
​	​	​	​	​	​	​	​
Coal	​	$	63,645	​	$	20,929	​
Supplies (net of reserve for obsolescence of $5,555 and $5,453, respectively)	​		37,660	​		38,277	​
Total inventories, net	​	$	101,305	​	$	59,206	​

​

See Note 2 – Summary of Significant Accounting Policies for more information on our accounting policy for inventories.

X

- References

No definition available.

+ Details

Name:	us-gaap_InventoryDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-URI http://asc.fasb.org/topic&trid=2126998

+ Details

Name:	us-gaap_InventoryDisclosureTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration