Leases - Supplemental Balance Sheet Information Related to Operating Leases (Details) $ in Thousands	Jun. 28, 2019 USD ($)
Lessee Lease Description [Line Items]
Operating lease right-of-use assets, gross	$ 11,771
Less accumulated depreciation	4,552
Operating lease right-of-use assets, net	7,219
Total operating lease liability	$ 7,346
Weighted-average remaining lease term (in years)	2 years 7 months 6 days
Weighted-average discount rate	1.84%
Machinery and Equipment
Lessee Lease Description [Line Items]
Operating lease right-of-use assets, gross	$ 757
Furniture and Fixtures
Lessee Lease Description [Line Items]
Operating lease right-of-use assets, gross	462
Real Property
Lessee Lease Description [Line Items]
Operating lease right-of-use assets, gross	$ 10,552