Acquisitions and Divestitures Acquisitions and Divestitures (Tables)

12 Months Ended

Dec. 31, 2017

Business Combinations [Abstract]

Fair Value of Acquired Assets and Liabilities

The following table summarizes the final adjusted purchase price and the values of assets acquired and liabilities assumed.

Final Adjusted Purchase Price
Total consideration given	$	54,332
Final Adjusted Allocation of Purchase Price
Oil and natural gas properties included in the full cost pool:
Proved oil and natural gas properties	$	43,745
Undeveloped oil and natural gas properties	8,650
Total oil and natural gas properties included in the full cost pool (1)	52,395
Gas gathering equipment and other	2,340
Asset retirement obligation	(403		)
Fair value of net assets acquired	$	54,332

(1) We used a discounted cash flow model and made market assumptions as to future commodity prices, projections of estimated quantities of oil and natural gas reserves, expectations for timing and amount of future development and operating costs, projections of future rates of production, expected recovery rates, and risk adjusted discount rates.