XML 146 R129.htm IDEA: XBRL DOCUMENT v3.21.1
Gain (loss) on non - financial assets, net (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Gain (loss) on non - financial assets, net      
Gain on sale of investment property $ 0 $ 500 $ 0
Unrealized gain on investment property 296 0 0
Impairment loss on other assets 0 0 (3,464)
Impairment loss on investment property 0 0 (3,849)
Write off on intangible assets 0 0 (2,705)
Impairment losses on non-financial assets $ 296 $ 500 $ (10,018)