Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Effective income tax rate	23.40%	38.50%
Income tax liability, transition toll tax	$ 6,100
Unrecognized tax benefits	2,581		$ 2,581
Unrecognized tax benefits that would impact effective tax rate	1,948		1,948
Unrecognized tax benefits, interest on income taxes accrued	$ 128		$ 128