Commodity Derivative Financial Instruments - Additional Information (Details)	Dec. 31, 2019 counterparty
Derivative [Line Items]
Number Of counterparties	9

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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