Property Acquisitions (Tables)
 6 Months Ended
Jun. 30, 2017
Business Combinations [Abstract]  
Schedule of Purchase Price Allocation
The table below summarizes the allocation of the $867.8 million adjusted purchase price, based on the acquisition date fair value of the assets acquired and the liabilities assumed as of June 30, 2017:
(in thousands)
Silverback Acquisition
Purchase price
$
867,772

Allocation of purchase price:
 
Unproved properties
753,763

Proved properties
116,700

Other property and equipment
56

Liabilities
(2,747
)
Total
$
867,772