Organization and Nature of Operations (Tables)

6 Months Ended

Jun. 30, 2017

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Schedule of Cash Flow Supplemental Disclosures

The following presents the non-cash investing, financing and supplemental cash flow information for the periods presented:

	Six Months Ended June 30,
	2017			2016
	(in thousands)
Non-cash investing and financing information:
Change in oil and natural gas properties - accrued    capital expenditures	$	(40	)	$	(379	)
Supplemental cash flow information:
Cash paid for interest	$	2,305		$	3,700