Taxes (Tables)

3 Months Ended

Apr. 01, 2018

Income Tax Disclosure [Abstract]

Reconciliation of United States Federal Statutory Corporate Tax Rate to Company's Effective Tax Rate, or Income Tax Provision

A reconciliation of the United States federal statutory corporate tax rate to the Company’s income tax expense, or effective tax rate, was as follows:

	Three-months Ended
	April 1, 2018		April 2, 2017
Income tax provision at federal statutory corporate tax rate	21	%	35	%
State income taxes, net of federal benefit	1	%	1	%
Foreign tax rate differential	(7	)%	(18	)%
Tax credit	(1	)%	(1	)%
Discrete tax benefit related to stock option exercises	(13	)%	(33	)%
Other discrete tax events	—	%	(1	)%
Other	1	%	1	%
Income tax provision	2	%	(16	)%