Leases - Other Lease Information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019	Dec. 31, 2019
Leases [Abstract]
Cash outflows for amounts included in the measurement of lease liabilities	$ 5,274	$ 6,073	$ 15,893	$ 15,944
ROU assets obtained in exchange for lease obligations, net of modifications	$ (1,327)	$ 6,724	$ 327	$ 10,986
Weighted average remaining lease term	3 years 11 months 1 day	4 years 2 months 23 days	3 years 11 months 1 day	4 years 2 months 23 days	4 years 8 months 4 days
Weighted-average discount rate	3.10%	3.30%	3.10%	3.30%	2.10%

No definition available.

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- Definition

Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

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-Publisher FASB
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- Definition

Weighted average discount rate for operating lease calculated at point in time.

+ References

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- Definition

Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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