Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Effective income tax rate	34.80%	23.40%
Unrecognized tax benefits	$ 1,318		$ 2,581
Unrecognized tax benefits that would impact effective tax rate	592		1,948
Unrecognized tax benefits, interest on income taxes accrued	$ 36		$ 128