Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Commitments And Contingencies Disclosure [Abstract]

Future Minimum Rental Commitments

We lease certain office space, office equipment, production facilities, compressors and transportation equipment under cancelable and non-cancelable leases. Rent expense under operating leases (including renewable monthly leases) totaled $14.0 million in 2016 compared to $15.9 million in 2015 and $13.3 million in 2014. Commitments related to these lease payments are not recorded in the accompanying consolidated balance sheets. Future minimum rental commitments under non-cancelable leases having remaining lease terms in excess of one year are as follows (in thousands):

	Operating Lease Obligations
2017	$	18,407
2018		16,126
2019		13,498
2020		13,088
2021		12,076
Thereafter		40,892
	$	114,087

Schedule of Future Minimum Transportation and Gathering Fees

We have entered into firm transportation and gathering contracts with various pipeline carriers for the future transportation and gathering of natural gas, NGLs and oil production from our properties in Pennsylvania and North Louisiana. Under these contracts, we are obligated to transport or gather minimum daily natural gas volumes, or pay for any deficiencies at a specified reservation fee rate. In most cases, our production committed to these pipelines is expected to exceed the minimum daily volumes provided in the contracts. As part of our purchase price allocation of liabilities that existed at the time of the MRD Merger, we have a liability of $59.2 million for certain expected volume deficiency payments related to our properties in North Louisiana. As of December 31, 2016, future minimum transportation and gathering fees under our commitments are as follows (in thousands):

	Transportation and Gathering Contracts (a)
2017	$	705,243
2018		699,863
2019		699,254
2020		635,379
2021		606,797
Thereafter		3,326,015
	$	6,672,551

^(a) The amounts in this table represent the gross amounts that we are committed to pay; however, we will record in our financial statements our proportionate share of costs based on our working interest which can vary based on volumes produced.

Future Delivery Commitments

We have various volume delivery commitments that are primarily related to our Marcellus Shale, Oklahoma and North Louisiana areas. We expect to be able to fulfill our contractual obligations from our own production; however, we may purchase third party volumes to satisfy our commitments or pay demand fees for commitment shortfalls, should they occur. As of December 31, 2016, our delivery commitments through 2030 were as follows:

Year Ending December 31,	Natural Gas (mmbtu per day)		Ethane and Propane (bbls per day)
2017		122,578	68,000
2018		170,390	68,000
2019		138,487	52,932
2020		94,111	48,132
2021		66,189	48,000
2022		27,068	43,000
2023—2028		—	35,000
2029—2030		—	20,000