Income Taxes - Additional Information (Detail) - USD ($)	6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Dec. 31, 2017
Income Tax [Line Items]
Effective income tax rate	44.60%	1.60%
Effective income tax rate with noncontrolling interest	42.00%	3.90%
Adjustments to net deferred tax liability	$ 0
Uncertain tax positions	2,800,000		$ 2,400,000
Uncertain tax positions that would affect tax rate	2,800,000		$ 2,400,000
Change in uncertain tax positions, expected material impact on consolidated condensed financial statements	$ 0
Earliest Tax Year [Member] | Internal Revenue Service (IRS) [Member]
Income Tax [Line Items]
Tax year open for examination	2002
Earliest Tax Year [Member] | State and Local Jurisdiction [Member]
Income Tax [Line Items]
Tax year open for examination	1998