XML 36 R24.htm IDEA: XBRL DOCUMENT
v3.21.2

Asset Retirement Obligations (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2021
Asset Retirement Obligation Disclosure [Abstract] |
Changes in Asset Retirement Obligation Liabilities | The components of the changes in the asset retirement obligation liabilities were:
(Dollars in thousands) |  | Short-Term Portion |  | Long-Term Portion |  | Total
Balance at December 31, 2020 |  | $ | 335 |  |  | $ | 7,289 |  |  | $ | 7,624 |
Accretion |  | (94) |  |  | 556 |  |  | 462 |
Amounts paid |  | (184) |  |  | — |  |  | (184) |
Reclassifications |  | 395 |  |  | (395) |  |  | — |
Balance at September 30, 2021 |  | $ | 452 |  |  | $ | 7,450 |  |  | $ | 7,902 |

X
- References No definition available. + Details
Name: | us-gaap_AssetRetirementObligationDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859 + Details
Name: | us-gaap_ScheduleOfChangeInAssetRetirementObligationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration