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Commitments and Contingencies - Financing Obligations - Santa Rosa (Details) $ in Millions		1 Months Ended
	Aug. 21, 2007 USD ($) renewal_option	May 31, 2019 amendment	Jun. 27, 2020 USD ($)	Jun. 29, 2019 USD ($)
Financing Obligations
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]			us-gaap:OtherLiabilitiesCurrent	us-gaap:OtherLiabilitiesCurrent
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]			us-gaap:OtherLiabilitiesNoncurrent	us-gaap:OtherLiabilitiesNoncurrent
Santa Rosa
Financing Obligations
Net cash proceeds received from sale and lease back transaction	$ 32.2
Number of renewal options (in renewal option) \| renewal_option	2
Renewal term	5 years
Financing obligation, current			$ 0.1
Financing obligation, noncurrent			$ 16.2
Sale leaseback obligation, current				$ 1.1
Sale leaseback obligation, noncurrent				$ 21.8
Santa Rosa \| Minimum
Financing Obligations
Lease term	1 year
Santa Rosa \| Maximum
Financing Obligations
Lease term	10 years
Santa Rosa Sale Leaseback Amendment
Financing Obligations
Renewal term		10 years
Lease amendments \| amendment		2