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v3.21.2

Other current assets (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2021
Other current assets |
Schedule of Other current assets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31,
​ |  | 2021 |  | 2020
Advances against auction contracts | ​ | $ | 3,107 | ​ | $ | 6,487
Assets held for sale | ​ |  | 7,067 | ​ |  | —
Prepaid expenses and deposits | ​ |  | 21,622 | ​ |  | 20,787
​ | ​ | $ | 31,796 | ​ | $ | 27,274
Summary of Assets held for sale | ​
​ | ​ | ​ | ​
​ | ​ | ​ | ​
Balance, December 31, 2020 |  | $ | —
Reclassified from property, plant and equipment | ​ |  | 7,308
Disposal | ​ |  | (241)
Balance, September 30, 2021 | ​ | $ | 7,067

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