Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Operating Lease Obligations Table

The amounts in the table below represent existing contractual operating lease obligations as of December 31, 2017, that may be assigned or otherwise charged to WES pursuant to the reimbursement provisions of the omnibus agreement:

thousands	Operating Leases
2018	$	8,402
2019	7,506
2020	1,615
2021	460
2022	467
Thereafter	2,021
Total	$	20,471