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Commitments and Contingencies (Tables) | 9 Months Ended
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Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract] |
Schedule of ground lease arrangements | The table below summarizes our current lease arrangements as of September 30, 2021:
Property (1) |  | Year of Current Expiration |  | Year of Final Expiration (2)
1185 Avenue of the Americas |  | 2043 |  | 2043
SL Green Headquarters at One Vanderbilt (3) |  | 2043 |  | 2048
625 Madison Avenue |  | 2022 |  | 2054
420 Lexington Avenue |  | 2050 |  | 2080
885 Third Avenue |  | 2080 |  | 2080
711 Third Avenue (4) |  | 2033 |  | 2083
1080 Amsterdam Avenue (5) |  | 2111 |  | 2111
15 Beekman (6)(7) |  | 2119 |  | 2119
(1)All leases are classified as operating leases unless otherwise specified. (2)Reflects exercise of all available extension options. (3)In March 2021, the Company commenced its lease for its corporate headquarters at One Vanderbilt. See note 10, "Related Party Transactions." (4)The Company owns 50% of the fee interest. (5)A portion of the lease is classified as a financing lease. (6)The Company has an option to purchase the ground lease for a fixed price on a specific date. The lease is classified as a financing lease. (7)In August 2020, the Company entered into a long-term sublease with an unconsolidated joint venture as part of the capitalization of the 15 Beekman development project. See Note 6, "Investments in Unconsolidated Joint Ventures."
Finance lease, liability, maturity | The following is a schedule of future minimum lease payments as evaluated in accordance with ASC 842 for our financing leases and operating leases with initial terms in excess of one year as of September 30, 2021 (in thousands):
| Financing leases |  | Operating leases
Remaining 2021 | $ | 871 |  |  | $ | 7,324 |
2022 | 3,522 |  |  | 29,386 |
2023 | 3,570 |  |  | 29,502 |
2024 | 3,641 |  |  | 30,545 |
2025 | 3,810 |  |  | 30,772 |
2026 | 3,858 |  |  | 30,911 |
Thereafter | 256,692 |  |  | 631,532 |
Total minimum lease payments | $ | 275,964 |  |  | $ | 789,972 |
Amount representing interest | (150,796) |  |  | — |
Amount discounted using incremental borrowing rate | — |  |  | (352,615) |
Lease liabilities | $ | 125,168 |  |  | $ | 437,357 |
Schedule of future minimum rental payments for operating leases | The following is a schedule of future minimum lease payments as evaluated in accordance with ASC 842 for our financing leases and operating leases with initial terms in excess of one year as of September 30, 2021 (in thousands):
| Financing leases |  | Operating leases
Remaining 2021 | $ | 871 |  |  | $ | 7,324 |
2022 | 3,522 |  |  | 29,386 |
2023 | 3,570 |  |  | 29,502 |
2024 | 3,641 |  |  | 30,545 |
2025 | 3,810 |  |  | 30,772 |
2026 | 3,858 |  |  | 30,911 |
Thereafter | 256,692 |  |  | 631,532 |
Total minimum lease payments | $ | 275,964 |  |  | $ | 789,972 |
Amount representing interest | (150,796) |  |  | — |
Amount discounted using incremental borrowing rate | — |  |  | (352,615) |
Lease liabilities | $ | 125,168 |  |  | $ | 437,357 |
Lease, cost | The following table provides lease cost information for the Company's operating leases for the three and nine months ended September 30, 2021 and 2020 (in thousands):
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
Operating Lease Costs |  | 2021 |  | 2020 |  | 2021 |  | 2020
Operating lease costs before capitalized operating lease costs |  | $ | 7,567 |  |  | $ | 7,751 |  |  | $ | 22,702 |  |  | $ | 24,486 |
Operating lease costs capitalized |  | (1,010) |  |  | (778) |  |  | (2,699) |  |  | (2,315) |
Operating lease costs, net (1) |  | $ | 6,557 |  |  | $ | 6,973 |  |  | $ | 20,003 |  |  | $ | 22,171 |
(1)This amount is included in operating lease rent in our consolidated statements of operations. The following table provides lease cost information for the Company's financing leases for the three and nine months ended September 30, 2021 and 2020 (in thousands):
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
Financing Lease Costs |  | 2021 |  | 2020 |  | 2021 |  | 2020
Interest on financing leases before capitalized interest |  | $ | 1,229 |  |  | $ | 2,198 |  |  | $ | 4,215 |  |  | $ | 6,010 |
Interest on financing leases capitalized |  | — |  |  | (588) |  |  | — |  |  | (2,378) |
Interest on financing leases, net (1) |  | 1,229 |  |  | 1,610 |  |  | 4,215 |  |  | 3,632 |
Amortization of right-of-use assets (2) |  | 180 |  |  | 304 |  |  | 540 |  |  | 914 |
Financing lease costs, net |  | $ | 1,409 |  |  | $ | 1,914 |  |  | $ | 4,755 |  |  | $ | 4,546 |
(1)These amounts are included in interest expense, net of interest income in our consolidated statements of operations. (2)These amounts are included in depreciation and amortization in our consolidated statements of operations.

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