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Assets Held for Sale
9 Months Ended
Sep. 30, 2018
Assets Held-for-sale, Not Part of Disposal Group [Abstract]  
Assets Held for Sale
Note 3. Assets Held for Sale

We are marketing for sale certain non-productive surface acreage in the Houston area. As of September 30, 2018, the carrying value of the land held for sale was $33.0 million, which is included in “Other property and equipment” on our Unaudited Condensed Consolidated Balance Sheets.