Equity Method Investment (Tables)

3 Months Ended

Mar. 31, 2017

Equity Method Investments

Schedule of reconciliation of investments in unconsolidated affiliates

The following table is a reconciliation of our investments in unconsolidated affiliates as presented on our condensed consolidated balance sheets (in thousands):

			MarkWest	Total Investment in
		Stonewall	Joint Venture	Unconsolidated Affiliates
Balance at December 31, 2016	$	68,299	—	68,299
Initial investment		—	153,770	153,770
Additional investments		—	6,119	6,119
Equity in net income (loss) of unconsolidated affiliates		2,475	(244)	2,231
Balance at March 31, 2017	$	70,774	159,645	230,419