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The cash inflow to dispose of long-lived, physical assets and mineral interests in oil and gas properties used for normal oil and gas operations.

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Summary of Significant Accounting Policies - Additional Information (Detail)			6 Months Ended
	Jun. 26, 2017 USD ($)	Dec. 31, 2016 USD ($) shares	Jun. 30, 2017 USD ($) Facility	Jan. 01, 2017 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of facilities for manufacture and distribution of products \| Facility			4
Recovery of precious metals			$ 2,900,000
ASU No. 2016-09 [Member]
Summary Of Significant Accounting Policies [Line Items]
Cumulative effect recorded as deferred tax asset				$ 1,100,000
Number of estimated forfeitures on outstanding equity awards \| shares		0
Accounting pronouncements adjustment on forfeiture		$ 0
Zena Energy L.L.C [Member] \| B K V Chelsea L L C [Member]
Summary Of Significant Accounting Policies [Line Items]
Purchase price receivable subject to customary pre-closing and post-closing adjustments	$ 16,300,000
Net proceeds from sale of oil and gas properties	$ 3,500,000
Zena Energy L.L.C [Member] \| B K V Chelsea L L C [Member] \| Plant, Property and Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Carrying value of asset sold		$ 20,000,000
Zena Energy L.L.C [Member] \| B K V Chelsea L L C [Member] \| Operating Other Expense [Member]
Summary Of Significant Accounting Policies [Line Items]
Loss on sale of asset			$ 4,000,000