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Operating Leases (Tables) | 12 Months Ended
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Dec. 31, 2021
Leases [Abstract] |
Schedule of Operating Lease Information | The following table presents key information regarding these leases (dollars in thousands):
| Mission Bay Facility |  | Third Street Facility
Lease commencement | September 2017 |  | June 2018
Lease term | January 2030 |  | January 2030
Space delivered during the year ended December 31, 2020 |  |  |
Square footage | 4,940 |  |  | — |
Right-of-use asset and lease liability recognized | $ | 2,133 |  |  | $ | — |
Space delivered during the year ended December 31, 2021 |  |  |
Square footage | 2,012 |  |  | — |
Right-of-use asset and lease liability recognized | $ | 1,057 |  |  | $ | — |
Renewal terms | Two consecutive five-year terms |  | One five-year term
Schedule of Lease Expense | The components of lease expense, which we include in operating expenses in our Consolidated Statements of Operations, were as follows (in thousands):
| Year Ended December 31,
| 2021 |  | 2020 |  | 2019
Operating lease expense | $ | 19,153 |  |  | $ | 18,985 |  |  | $ | 14,697 |
Variable lease expense | 8,974 |  |  | 8,179 |  |  | 6,408 |
Total lease expense | $ | 28,127 |  |  | $ | 27,164 |  |  | $ | 21,105 |
Schedule of Future Minimum Lease Payments for Operating Leases | As of December 31, 2021, the maturities of our operating lease liabilities were as follows (in thousands):
Year ending December 31, |
2022 | $ | 18,626 |
2023 | 20,909 |
2024 | 21,572 |
2025 | 22,255 |
2026 | 22,957 |
2027 and thereafter | 75,411 |
Total lease payments | 181,730 |
Less: portion representing interest | (37,900) |
Less: lease incentives | (653) |
Operating lease liabilities | 143,177 |
Less: current portion | (17,441) |
Operating lease liabilities, less current portion | $ | 125,736 |

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- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details
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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details
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