Acquisitions and Divestitures - Additional Information (Details)	1 Months Ended		3 Months Ended	6 Months Ended
	Aug. 31, 2015 USD ($) a Location	Jun. 30, 2015 USD ($) a Boe Well Location	Mar. 31, 2016 USD ($) a	Jun. 30, 2016 Well	Apr. 30, 2015 USD ($)
Business Acquisition [Line Items]
Consideration paid		$ 4,066,000
Cash consideration					$ 3,400,000
Gain (loss) on sale of properties			$ 1,600
Effective date of transaction			Mar. 01, 2015
Southern Gonzales County [Member]
Business Acquisition [Line Items]
Acquisition of operating interest	33.00%	50.00%
Company acquired gross acres | a	1,650	1,000
Number of wells acquired | Well		2
Percentage of acres held for production		100.00%
Gross production, barrels of oil equivalents per day | Boe		44
Number of locations for eagle ford with expected development | Location	16	13
Working interest acquired	$ 3,300,000
Northern Kames County [Member]
Business Acquisition [Line Items]
Company acquired gross acres | a		400	350
Net acres | a			117
Banks Field of McKenzie County [Member]
Business Acquisition [Line Items]
Number of wells acquired | Well		41
Number of drilling wells acquired | Well		21
Consideration paid		$ 1,400,000
Purchase price adjustment for revenues, net for production taxes, operating expenses and capital costs		$ 2,000,000
Net acres acquired | a		164
Scenario Forecast [Member] | Northern Kames County [Member]
Business Acquisition [Line Items]
Number of drilling wells acquired | Well				4