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Commitments and contingencies (Details) |  |  |  | 28 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Feb. 09, 2024 USD ($) | Feb. 07, 2024 USD ($) | Jan. 30, 2024 USD ($) | Dec. 31, 2023 USD ($) arbitration complaintant | Dec. 31, 2022 USD ($) | Sep. 13, 2022 USD ($) | Aug. 31, 2021 arbitration
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Contractual obligation |  |  |  | $ 2,400,000 |  |  |
Lease not yet commenced, amount |  |  |  | 5,800,000 | $ 40,200,000 |  |
Letters of credit outstanding, |  |  |  | 0 |  |  |
Estimated range of loss in excess of amounts accrued |  |  |  | $ 23,000,000 |  |  |
Number of arbitrations | arbitration |  |  |  |  |  |  | 48
Number of complainants | complaintant |  |  |  | 138 |  |  |
Litigation settlement expense |  |  |  | $ 87,700,000 |  |  |
Estimate of possible loss amount |  |  |  |  |  | $ 1,900,000 |
Subsequent Event |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Litigation damages sought | $ 12,000,000 |  |  |  |  |  |
Litigation settlement amount |  | $ 1,000,000 | $ 1,200,000 |  |  |  |
Pending Litigation |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Number of arbitrations | arbitration |  |  |  | 7 |  |  |
Estimate of possible loss amount |  |  |  | $ 7,900,000 |  |  |
Settled Litigation |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Number of settled arbitrations | arbitration |  |  |  | 41 |  |  |

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