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Right-of-use assets and lease liabilities | 12 Months Ended
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Dec. 31, 2021
Right-of-use assets and lease liabilities |
Right-of-use assets and lease liabilities | 11. Right-of-use assets and lease liabilities The right-of-use assets represented the leased office lease of the Group, are amortized over the lease terms, which are greater than 1 year but less than 3 years. Right-of-use assets for long-term operating leases were as below: ​
​ | ​ | ​
(In thousands) |  | Office leases
Net book amount as of January 1, 2020 | ​ | 8,747
Additions | ​ | 500
Modification of operating lease | ​ | (3,825)
Amortization | ​ | (3,685)
Effect of foreign currency exchange differences | ​ | 217
Net book amount as of December 31, 2020 |  | 1,954
Additions |  | 25
Modification of operating lease |  | (43)
Amortization |  | (1,934)
Effect of foreign currency exchange differences |  | 25
Net book amount as of December 31, 2021 | ​ | 27
​ During the years ended December 31, 2019, 2020 and 2021, the general and administrative expenses for long-term operating lease were USD6,077,000, USD3,762,000 and USD1,934,000, respectively. A charge of USD301,000, USD291,000 and USD786,000 were recognized in relation to short-term lease for the years ended December 31, 2019, 2020 and 2021. The future minimum payments under non-cancellable short-term operating leases of office rental will be USD1,322,000 in 2022. The weighted average discount rate related to operating lease was 5.5%, 5.4% and 5.4%, respectively, as of December 31, 2019, 2020 and 2021, and the weighted average remaining lease term were 2 years, 1 year and 1 year as of December 31, 2019, 2020 and 2021, respectively. The total cash payments in respect of operating lease were USD5,149,000, USD3,797,000 and USD2,003,000 for the years ended December 31, 2019, 2020 and 2021, respectively. The undiscounted cash payments for each of the next five years as of December 31, 2020 is: ​
​ | ​ | ​
(In thousands) |  |
2021 |  | 1,998
2022 |  | 28
Total undiscounted payments | ​ | 2,026
Less: effect of discounting | ​ | (38)
Discounted lease liabilities |  | 1,988
​ 11. Right-of-use assets and lease liabilities (Continued) ​ The undiscounted cash payments for each of the next five years as of December 31, 2021 is: ​
​ | ​ | ​
(In thousands) |  |
2022 |  | 19
2023 |  | 7
Total undiscounted payments |  | 26
Less: effect of discounting |  | (1)
Discounted lease liabilities |  | 25
​

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- References No definition available. + Details
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- Definition The entire disclosure for operating leases of lessee. Includes, but is not limited to, description of operating lease and maturity analysis of operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=77888251 + Details
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