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OPERATING LEASES | 12 Months Ended
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Dec. 31, 2020
Leases [Abstract] |
OPERATING LEASES | 7. OPERATING LEASES Menlo Park Office Space Lease We had an operating lease for our office space at 149 Commonwealth Drive, Menlo Park, California, or the Menlo Park Lease, that was due to expire in January 2020. On September 10, 2019, we amended this lease agreement to extend the lease term by two months to the end of March 2020. In March 2020, in connection with the “shelter in place” orders issued by the Health Officer of the County of San Mateo and the Governor of the State of California on March 16 and March 19, 2020, respectively, which directed non-essential businesses to cease operations until the orders are rescinded, we further amended the Menlo Park Lease to extend the lease term until the 15th day after the later of: a) April 7, 2020; b) the expiration or termination of the “shelter in place” orders; or c) the modification of the “shelter in place” orders such that non-essential business operations and non-essential travel are expressly permitted. We terminated the Menlo Park Lease on May 29, 2020. The amendments to the Menlo Park Lease were treated as modifications to the existing lease agreement, and t he right-of-use asset and corresponding operating lease liability were remeasured based on the present value of remaining lease payments over the remaining extended lease term as of each amendment, using the same discount rate of 5% applied as of the adoption date. For the March 2020 extensions, the additional right-of-use asset and corresponding operating lease liability was approximately $149,000. Under the Menlo Park Lease, we were also obligated to pay certain variable expenses separately from the base rent, including taxes and common area maintenance. Such costs were considered non-lease components and were excluded from the calculation of the right-of-use asset and corresponding operating lease liability and were expensed in the period they are incurred. New Jersey Office Space Lease In April 2019, we entered into an operating lease agreement for office space located at 3 Sylvan Way, Parsippany, New Jersey, or the New Jersey Lease. The initial term of the New Jersey Lease is 11 years with an option to extend for an additional five years and a one-time option to terminate the New Jersey Lease without cause as of the 103rd month anniversary of the commencement date of the lease. The New Jersey Lease commenced on October 1, 2019, upon our control of the office space on that date. Based on the initial term of the New Jersey Lease of 11 years, the right-of-use asset and corresponding operating lease liability was approximately $2,356,000, which represented the present value of lease payments over the initial lease term, using an incremental borrowing rate of 8% based on information available as of October 1, 2019. Under the New Jersey Lease, we are also obligated to pay certain variable expenses separately from the base rent, including electricity and common area maintenance. Such costs are being expensed in the period they are incurred. As of December 31, 2020, the remaining lease term for the New Jersey Lease is 9.8 years. Foster City Office Space Lease In October 2019, we entered into an operating lease agreement for office space located at 919 East Hillsdale Boulevard, Foster City, California, or the Foster City Lease. The Foster City Lease replaced our leased premises at 149 Commonwealth Drive, Menlo Park, California (see above). The initial term of the Foster City Lease is 87 months with an option to extend for an additional five years. The Foster City Lease commenced on March 10, 2020, upon the substantial completion of all tenant improvements. As of the lease commencement date, the right-of-use asset and corresponding operating lease liability was approximately $3,426,000, which represented the present value of remaining lease payments using an incremental borrowing rate of 7% over the initial lease term of 87 months, net of a three-month rent abatement period. Under the Foster City Lease, we are also obligated to pay certain variable expenses separately from the base rent, including taxes and common area maintenance. Such costs are considered non-lease components and have been excluded from the calculation of the right-of-use asset and corresponding operating lease liability and are being expensed in the period they are incurred. As of December 31, 2020, the remaining lease term for the Foster City Lease is 6.5 years. The components of lease costs included in operating expenses for the New Jersey Lease and the Foster City Lease on our statements of operations were as follows:
|  | Year Ended December 31, |
(In thousands) |  | 2020 |  |  | 2019 |  |  | 2018 |
Operating lease costs | $ | 1,143 |  |  | $ | 783 |  |  | $ | 678 |
Variable lease costs (1) |  | 293 |  |  |  | 17 |  |  |  | 31 |
Total lease costs | $ | 1,436 |  |  | $ | 800 |  |  | $ | 709 |
| (1) | Variable lease costs represent non-lease components, such as common area maintenance charges.
The undiscounted future non-cancellable lease payments under the Menlo Park Lease, the New Jersey Lease and the Foster City Lease as of December 31, 2020 were as follows (in thousands):
2021 |  | $ | 913 |
2022 |  |  | 937 |
2023 |  |  | 962 |
2024 |  |  | 988 |
2025 |  |  | 1,014 |
Thereafter |  |  | 2,807 |
Total lease payments |  | 7,621 |
Less: imputed interest |  | (1,944 | )
Total |  | $ | 5,677 |

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- Definition The entire disclosure for operating leases of lessee. Includes, but is not limited to, description of operating lease and maturity analysis of operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=77888251 + Details
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