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Property and Equipment (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Oil and natural gas properties |  |
Evaluated (subject to amortization) | $ 4,557,265 | $ 3,780,236
Total unproved and unevaluated | 1,126,992 | 1,199,511
Total oil and natural gas properties | 5,684,257 | 4,979,747
Accumulated depletion | (2,603,681) | (2,273,010)
Net oil and natural gas properties | 3,080,576 | 2,706,737
Midstream Properties [Abstract] |  |
Midstream properties | 643,903 | 428,025
Accumulated depreciation | 2,655,586 | 2,306,949
Other property and equipment |  |
Other property and equipment | 27,021 | 22,041
Accumulated depreciation | (13,432) | (9,588)
Net other property and equipment | 13,589 | 12,453
Net property and equipment | 3,699,595 | 3,122,864
Midstream equipment and facilities |  |
Midstream Properties [Abstract] |  |
Midstream properties | 643,903 | 428,025
Accumulated depreciation | 38,473 | 24,351
Net midstream properties | 605,430 | 403,674
Furniture, fixtures and other equipment |  |
Other property and equipment |  |
Other property and equipment | 9,170 | 7,047
Software |  |
Other property and equipment |  |
Other property and equipment | 8,099 | 8,039
Leasehold improvements |  |
Other property and equipment |  |
Other property and equipment | $ 9,752 | $ 6,955

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