Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017	Dec. 31, 2017
Income Taxes Disclosure [Line Items]
Effective income tax rate	27.80%	33.30%	26.10%	38.50%
Effective income tax rate reconciliation, at federal statutory income tax rate, percent			21.00%		34.00%
Deferred tax balance recorded					$ 1.7
Maximum [Member]
Income Taxes Disclosure [Line Items]
Effective income tax rate reconciliation, at federal statutory income tax rate, percent					35.00%