Commitments and Contingencies (Tables)

12 Months Ended

Mar. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Schedule of change in asset retirement obligation

The following table is a rollforward of our asset retirement obligation, which is reported within other noncurrent liabilities in our consolidated balance sheets (in thousands):

Balance at March 31, 2014	$	2,261
Liabilities incurred	1,695
Liabilities settled	(390		)
Accretion expense	333
Balance at March 31, 2015	3,899
Liabilities incurred	1,486
Liabilities settled	(191		)
Accretion expense	380
Balance at March 31, 2016	$	5,574

Schedule of future minimum lease payments under contractual commitments

The following table summarizes future minimum lease payments under these agreements at March 31, 2016 (in thousands):

Year Ending March 31,
2017	$	136,065
2018	120,723
2019	98,266
2020	87,569
2021	77,821
Thereafter	127,315
Total	$	647,759

Schedule of future minimum throughput payments under agreements

The following table summarizes future minimum throughput payments under these agreements at March 31, 2016 (in thousands):

Year Ending March 31,
2017	$	53,024
2018	53,042
2019	52,250
2020	42,418
Total	$	200,734

Schedule of commitments outstanding

We have entered into product sales and purchase contracts for which we expect the parties to physically settle and deliver the inventory in future periods. The following table summarizes such commitments at March 31, 2016:

	Volume	Value
	(in thousands)
Purchase commitments:
Natural gas liquids fixed-price (gallons)	22,078	$	8,493
Natural gas liquids index-price (gallons)	855,945	365,477
Crude oil fixed-price (barrels)	1,077	41,756
Crude oil index-price (barrels)	14,722	518,431
Sale commitments:
Natural gas liquids fixed-price (gallons)	85,162	52,633
Natural gas liquids index-price (gallons)	312,198	197,861
Crude oil fixed-price (barrels)	2,107	92,469
Crude oil index-price (barrels)	18,754	730,583