Transactions with Affiliates (Tables)

6 Months Ended

Sep. 30, 2017

Related Party Transactions [Abstract]

Summary of purchase and sale transactions of products and services

The following table summarizes these related party transactions for the periods indicated:

	Three Months Ended September 30,				Six Months Ended September 30,
	2017		2016		2017		2016
	(in thousands)
Sales to SemGroup	$	107	$	3,513	$	230	$	3,584
Purchases from SemGroup	$	1,911	$	1,938	$	2,928	$	3,963
Sales to equity method investees	$	98	$	95	$	196	$	500
Purchases from equity method investees	$	20,563	$	27,345	$	48,469	$	57,992
Sales to entities affiliated with management	$	57	$	75	$	140	$	152
Purchases from entities affiliated with management	$	1,150	$	3,493	$	1,347	$	11,736

Schedule of accounts receivable from affiliates

Accounts receivable from affiliates consist of the following at the dates indicated:

	September 30, 2017		March 31, 2017
	(in thousands)
Receivables from SemGroup	$	2,881	$	6,668
Receivables from equity method investees	17		15
Receivables from entities affiliated with management	20		28
Total	$	2,918	$	6,711

Schedule of accounts payable to affiliates

Accounts payable to affiliates consist of the following at the dates indicated:

	September 30, 2017		March 31, 2017
	(in thousands)
Payables to SemGroup	$	4,099	$	6,571
Payables to equity method investees	643		1,306
Payables to entities affiliated with management	7		41
Total	$	4,749	$	7,918