Statement of Cash Flow Supplemental Disclosure (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 30, 2019	Mar. 31, 2018
Other Significant Noncash Transactions [Line Items]
Shares Paid for Tax Withholding for Share Based Compensation	23,088	20,145
Shares Paid For Tax Withholding For Share Based Compensation, Value	$ 0.7	$ 1.0

For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer.

No definition available.

Name:	us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration