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Leases - Narrative (Details) $ in Thousands | 1 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
May 31, 2017 | Sep. 27, 2019 USD ($) ft² renewal_option | Aug. 30, 2019 ft² | Apr. 30, 2019 USD ($) ft² | Jan. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items] |  |  |  |  |
Tenant improvement allowance |  | $ 1,742 |  |  |
Cash paid for amounts included in the measurement of lease liabilities |  | $ 2,100 |  |  |
Weighted average operating discount rate used to determine the operating lease liability |  | 4.20% |  |  |
Weighted average remaining lease term for operating lease |  | 8 years 3 months 18 days |  |  |
Alameda, California |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Area of lease property (in square feet) | ft² |  | 169,606 |  |  |
Tenant improvement reimbursements |  |  |  |  | $ 8,200
Number of options to extend the Lease | renewal_option |  | 2 |  |  |
Option to terminate lease (after period) | 8 years |  |  |  |
Lease option to extend period |  | 5 years |  |  |
Operating lease, expansion (in square feet) | ft² |  |  | 59,335 | 37,544 |
Operating lease, surrendered (in square feet) | ft² |  |  |  | 2,703 |
Tenant improvement allowance |  |  |  | $ 1,700 |

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- Definition Lessee, Operating Lease, Liability, Tenant Improvement Reimbursements + References No definition available. + Details
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- Definition Lessee, Operating Lease, Number Of Renewal Options + References No definition available. + Details
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- Definition Operating Lease, Additional Area Of Real Estate Property + References No definition available. + Details
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- Definition Tenant Lease Improvements, Allowance + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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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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