XML 109 R9999.htm IDEA: XBRL DOCUMENT v3.20.2
Label Element Value
Asset Retirement Obligation [Default Label] us-gaap_AssetRetirementObligation $ 2,812,000
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment 12,257,000
Property, Plant and Equipment, Gross us-gaap_PropertyPlantAndEquipmentGross 22,765,000
Cash and Cash Equivalents, at Carrying Value us-gaap_CashAndCashEquivalentsAtCarryingValue $ 685,000