Acquisitions and Divestitures - Schedule of Consideration Paid to Acquire Net Assets and Estimated Values of Net Assets (Details) $ in Thousands	1 Months Ended
	Jun. 30, 2015 USD ($)
Business Acquisition [Line Items]
Purchase price	$ 4,066
Estimated fair value of assets acquired:
Total assets acquired	4,084
Estimated fair value of liabilities assumed:
Asset retirement obligations	13
Other liabilities	5
Total liabilities assumed	18
Consideration paid	4,066
Proved Oil and Gas Properties [Member]
Estimated fair value of assets acquired:
Oil and natural gas properties	588
Unproved Oil and Gas Properties [Member]
Estimated fair value of assets acquired:
Oil and natural gas properties	$ 3,496