XML 83 R47.htm IDEA: XBRL DOCUMENT
v3.20.4

Other current assets (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
Other current assets |
Schedule of Other current assets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
As at December 31, |  | 2020 |  | 2019
Advances against auction contracts | ​ | $ | 6,487 | ​ | $ | 12,925
Assets held for sale | ​ |  | — | ​ |  | 15,051
Prepaid expenses and deposits | ​ |  | 20,787 | ​ |  | 22,184
​ | ​ | $ | 27,274 | ​ | $ | 50,160

X
- References No definition available. + Details
Name: | us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the carrying amounts of other current assets. + References No definition available. + Details
Name: | us-gaap_ScheduleOfOtherCurrentAssetsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration