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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2021
Commitments and Contingencies |
Schedule of Minimum Annual Rental Commitments | ​ We have no financing leases and minimum annual rental commitments under non-cancellable operating leases consisted of the following at December 31, 2021 (in thousands): ​
​ | ​ | ​ | ​
Years Ending December 31, |  | ​ | ​
2022 |  | $ | 1,778
2023 | ​ |  | 1,575
2024 | ​ |  | 1,275
2025 | ​ |  | 875
2026 | ​ |  | 668
Thereafter | ​ |  | 1,243
Total lease payments (a) | ​ |  | 7,414
Less: Interest (b) | ​ |  | 988
Present value of lease liabilities (c) | ​ | $ | 6,426
(a) | Lease payments include options to extend lease terms that are reasonably certain of being exercised. There were no legally binding minimum lease payments for leases signed but not yet commenced at December 31, 2021.
(b) | Our leases do not provide a readily determinable implicit rate. Therefore, we must estimate our discount rate for such leases to determine the present value of lease payments at the lease commencement date.
(c) | The weighted average remaining lease term and weighted average discount rate used in calculating our lease liabilities were 6.2 years and 4.2%, respectively, at December 31, 2021.

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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details
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