XML 24 R12.htm IDEA: XBRL DOCUMENT v3.21.2

Other Long-Term Liabilities

9 Months Ended

Sep. 30, 2021

Other Liabilities Disclosure [Abstract]

Other Long-Term Liabilities

Other Long-Term Liabilities

Other long-term liabilities are summarized as follows (in thousands):

			September 30, 2021						December 31, 2020
Black lung obligations			$	34,229					$	34,567
Other			2,985						2,258
Total other long-term liabilities			$	37,214					$	36,825

X

- References

No definition available.

+ Details

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

X

- Definition

The entire disclosure for other liabilities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20,24)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_OtherLiabilitiesDisclosureTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration