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Leases (Tables) | 12 Months Ended
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Dec. 31, 2022
Leases |
Summary of lease costs and maturity analysis for liabilities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Lease Costs | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended
(in thousands) | ​ | December 31, 2022 | ​ |  | December 31, 2021 | ​ |  | December 31, 2020
Operating lease cost | $ | 419 | ​ | $ | 419 | ​ | $ | 419
​ | $ | 419 | ​ | $ | 419 | ​ | $ | 419
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Other information | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Cash paid for amounts included in the measurement of lease liabilities | ​ | 438 | ​ | ​ | 429 | ​ | ​ | 421
Weighted average remaining lease terms in years - operating leases | ​ | 1.75 | ​ | ​ | 2.75 | ​ | ​ | 3.75
Weighted average discount rate - operating leases | ​ | 3.86% | ​ | ​ | 3.86% | ​ | ​ | 3.86%
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Maturity analysis for liabilities | Total |  | ​ | ​ |  | ​ | ​
​ | Undiscounted | ​ | ​ | ​ | ​ | ​ | ​
(in thousands) | Cash Flows | ​ | ​ | ​ | ​ | ​ | ​
Discount rate at commencement | ​ | 3.86% | ​ | ​ | ​ | ​ | ​ | ​
2023 | $ | 447 | ​ | ​ | ​ | ​ | ​ | ​
2024 | ​ | 340 | ​ | ​ | ​ | ​ | ​ | ​
​ | $ | 787 | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Present value lease liability | $ | 759 | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Difference between undiscounted cash flows and discounted cash flows | $ | 28 | ​ | ​ | ​ | ​ | ​ | ​
​
Summary of income relating to lease payments and undiscounted cash flows | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Income relating to lease payments: | ​ | ​
​ | ​ | Year Ended
(in thousands) |  | December 31, 2022 | ​ | December 31, 2021 |  | December 31, 2020
Income from leases (1) | ​ | $ | 157,719 | ​ | $ | 203,530 | ​ | $ | 242,209
​ | ​ | $ | 157,719 | ​ | $ | 203,530 | ​ | $ | 242,209
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Undiscounted Cash Flows |  | Year ending | ​ | ​ | ​ | ​ | ​ | ​
(in thousands) | ​ | December 31, | ​ | ​ | ​ | ​ | ​ | ​
2023 | ​ | ​ | 98,712 | ​ | ​ | ​ | ​ | ​ | ​
2024 | ​ | ​ | 90,567 | ​ | ​ | ​ | ​ | ​ | ​
2025 | ​ | ​ | 77,525 | ​ | ​ | ​ | ​ | ​ | ​
2026 | ​ | ​ | 66,597 | ​ | ​ | ​ | ​ | ​ | ​
2027 | ​ | ​ | 56,357 | ​ | ​ | ​ | ​ | ​ | ​
2028 and thereafter | ​ |  | 220,931 | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | $ | 610,689 | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(1) Amounts recognized from variable lease payments were $49,730, $54,825 and $61,310 for the years ended December 31, 2022, 2021 and 2020, respectively. | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​

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- Definition Tabular disclosure of components of income from operating lease and maturity of undiscounted cash flows to be received by lessor on annual basis for operating lease. + References No definition available. + Details
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- Definition Tabular disclosure of lessee's lease cost and undiscounted cash flows of of operating lease liability. + References No definition available. + Details
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