Annual report pursuant to Section 13 and 15(d)

Investments (Schedule of Long-Term Investments) (Details)

v3.21.1
Investments (Schedule of Long-Term Investments) (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Feb. 28, 2018
Sep. 30, 2017
Dec. 31, 2020
Dec. 31, 2019
Balance at January 1     $ 9,723 $ 9,613
Investment in tess       90
Accrued interest on convertible note     20
Impairment of long-term investment     9,413
Balance at December 31     310 9,723
Verady [Member]        
Balance at January 1     220 200
Investment in tess      
Accrued interest on convertible note       20
Impairment of long-term investment      
Balance at December 31     220 220
Tess [Member]        
Balance at January 1     90
Investment in tess       90
Accrued interest on convertible note      
Impairment of long-term investment      
Balance at December 31     90 90
Coinsquare [Member]        
Balance at January 1     9,413 9,413
Investment in tess $ 9,400 $ 9,400  
Accrued interest on convertible note      
Impairment of long-term investment     (9,413)  
Balance at December 31     $ 9,413