M&EC - Schedule of Change in Asset Retirement Obligation (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended |
|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2019 |
|
| Asset Retirement Obligation Disclosure [Abstract] | ||
| Balance at beginning | $ 1,142 | |
| Adjustment to closure liability | $ 165 | 330 |
| Spending | (1,316) | |
| Balance at end | $ 156 | $ 156 |
| X | ||||||||||
- Definition The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of asset retirement obligations settled, or otherwise disposed of, during the period. This may include asset retirement obligations transferred to third parties associated with the sale of a long-lived asset. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase (decrease) in asset retirement obligations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|