Segments - Additional Information (Detail)	3 Months Ended
Oct. 01, 2016
Hunter Ridge Energy Services LLC [Member]
Segment Reporting Information [Line Items]
Equity method investment ownership percentage, percentage of investee's ownership interest sold	50.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Period Type:	duration