Related Party Transactions - Schedule of Net Assets Recorded by Partnership (Detail) - USD ($) $ in Thousands	Feb. 23, 2015	Oct. 01, 2014	Apr. 01, 2014
Property Swap [Member]
Related Party Transaction [Line Items]
Accounts receivable	$ 2,372
Other receivables	5,478
Prepaid expenses and other current assets	1,874
Property and equipment, net	263,210
Accounts payable	(3,586)
Accounts payable - affiliate	(1,290)
Revenues payable	(1,110)
Accrued liabilities	(11,347)
Asset retirement obligations	(4,559)
Net assets	$ 251,042
Double A Acquisition [Member]
Related Party Transaction [Line Items]
Property and equipment, net			$ 37,838
Asset retirement obligations			(908)
Other current liabilities			(722)
Net assets			$ 36,208
Wattenberg Acquisition [Member]
Related Party Transaction [Line Items]
Property and equipment, net		$ 9,822
Asset retirement obligations		(149)
Other current liabilities		0
Net assets		$ 9,673