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Leases | 12 Months Ended
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Dec. 31, 2020
Leases [Abstract] |
Leases | Leases Lessee Disclosures We are a lessee on a limited number of ground and office leases (the "Operating Leases"). Our office leases have remaining lease terms of one year to six years and our ground leases have remaining terms of 34 years to 51 years. For the year ended December 31, 2020, we recognized $3,093 of operating lease expense, inclusive of short-term and variable lease costs which are not significant. The following is a schedule of the maturities of operating lease liabilities for the next five years as of December 31, 2020, and thereafter:
2021 | $ | 2,544 |
2022 | 2,576 |
2023 | 2,411 |
2024 | 2,194 |
2025 | 2,058 |
Thereafter | 58,818 |
Total Lease Payments | 70,601 |
Less Imputed Interest (A) | (47,775) |
Total | $ | 22,826 |
(A) Calculated using the discount rate for each lease. As of December 31, 2020, our weighted average remaining lease term for the Operating Leases is 39.6 years and the weighted average discount rate is 7.1%. A number of the Operating Leases include options to extend the lease term. For purposes of determining our lease term, we excluded periods covered by an option since it was not reasonably certain at lease commencement that we would exercise the options. Lessor Disclosures Our properties and certain land parcels are leased to tenants and classified as operating leases. Future minimum rental receipts, excluding variable payments and tenant reimbursements of expenses, under non-cancelable operating leases executed as of December 31, 2020 are approximately as follows:
2021 | $ | 333,405 |
2022 | 305,971 |
2023 | 262,228 |
2024 | 221,594 |
2025 | 183,186 |
Thereafter | 537,189 |
Total | $ | 1,843,573 |
Several of our operating leases include options to extend the lease term and/or to purchase the building. For purposes of determining the lease term and lease classification, we exclude these extension periods and purchase options unless it is reasonably certain at lease commencement that the option will be exercised. During the year ended December 31, 2019, a tenant exercised its lease option to purchase a 0.6 million square foot building located in our Phoenix market. The option included a fixed purchase price and an expected closing date in August 2020. At the time the tenant exercised the option, we reassessed the lease classification of this lease and, based on various qualitative factors, we determined that it was reasonably certain the tenant would close on the acquisition of the building. Accordingly, during the year ended December 31, 2019, we reclassified the lease from an operating lease to a sales-type lease, which resulted in a gain on sale of $8,606. Additionally, we derecognized the net book value of the property and recorded a lease receivable of $54,521 which represented the discounted present value of the remaining lease payments and the fixed purchase option price. During the year ended December 31, 2020, we closed on the sale of the property.

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