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Property and Equipment (Schedule of Property and Equipment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2020	Dec. 28, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 74,452	$ 68,206
Less: accumulated depreciation and amortization	(25,560)	(17,309)
Property and equipment, net	48,892	50,897
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	33,904	33,941
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	17,338	15,022
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	13,053	12,709
Laboratory equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	8,904	5,668
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,253	$ 866
Minimum | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years
Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	15 years
Maximum | Leasehold improvements
Property, Plant and Equipment [Line Items]
Estimated useful lives	15 years
Maximum | Computer equipment and software
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years
Maximum | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Estimated useful lives	7 years
Maximum | Laboratory equipment
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

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-SubTopic 10
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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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+ References

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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