Commitments and Contingencies - Financing Obligations - Eningen and Santa Rosa (Details) $ in Millions	Dec. 16, 2011 ft² building	Aug. 21, 2007 USD ($) ft² a renewal_option building	Jun. 29, 2019 USD ($) building	Jun. 30, 2018 USD ($)
Financing Obligations
Financing obligation, noncurrent			$ 25.5	$ 26.8
Eningen
Financing Obligations
Area of land sold (in square feet) | ft²	394,217
Number of buildings sold | building	9
Area of property sold (in square feet) | ft²	386,132
Square feet of property leased back | ft²	158,154
Number of buildings leased back | building	2
Lease term	10 years
Minimum term before early cancellation clause takes effect	5 years
Financing obligation, current			0.2	0.2
Financing obligation, noncurrent			3.6	3.9
Santa Rosa
Financing Obligations
Number of buildings sold | building		13
Area of property sold (in square feet) | ft²		492,000
Square feet of property leased back | ft²		286,000
Number of buildings leased back | building		7
Financing obligation, current			1.1	0.9
Financing obligation, noncurrent			21.8	$ 22.9
Area of land sold (in acres) | a		45
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
Letter of credit issued as a security			$ 3.8
Number of buildings included in the option to purchase at the end of the lease term | building			1
Santa Rosa | Minimum
Financing Obligations
Lease term		1 year
Santa Rosa | Maximum
Financing Obligations
Lease term		10 years