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Commitments (Leases Narrative (Details) $ in Thousands | 12 Months Ended
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Dec. 28, 2018 USD ($) ft² option
Lessee, Lease, Description [Line Items] |
Tenant improvement reimbursements | $ | $ 8,170
Cash paid for amounts included in the measurement of lease liabilities | $ | $ 3,900
Weighted average remaining lease term for operating lease | 9 years
Weighted average operating discount rate used to determine the operating lease liability | 4.50%
Alameda, California |
Lessee, Lease, Description [Line Items] |
Area of leased property (in sqft) | 134,765
Area of property available for lease (in squire feet) | 170,000
South San Francisco, California |
Lessee, Lease, Description [Line Items] |
Area of leased property (in sqft) | 116,063
Number of renewal options | option | 2

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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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918643-209977 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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