Subsequent Events (Details) - Subsequent Event [Member] $ in Millions	Aug. 05, 2020 USD ($)	Jul. 31, 2020 USD ($) a Bcf
Subsequent Event [Line Items]
Net Proved Developed Natural Gas Reserves Associated with Asset Acquisition | Bcf		700
Purchase Price To Acquire Upstream Assets and Midstream Gathering Assets		$ 503.9
Down Payment Paid at Signing of Purchase and Sale Agreement		$ 27.1
Net Acres Acquired in Appalachia | a		400,000
Net Acres Acquired in Tioga County | a		200,000
Anticipated Proceeds from Sale of Certain Timber and Other Assets	$ 115.7