v3.21.2
Segment information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Revenues $ 4,293 $ 5,115 $ 1,570
Gross (loss) profit (1,066) 2,734 313
Operating expenses 66,276 3,466 2,774
Operating (loss) profit from continuing operations 67,342 732 2,461
Other income (expenses) (890) 199 596
(Loss) profit before provision for income taxes and non-controlling interests (68,232) (533) (1,865)
Income tax benefit (expense) 309 (410) (16)
Net (loss) profit from continuing operations (67,923) (943) (1,881)
Identifiable long-lived assets 52,587 55,085  
Total assets 90,130 139,717  
Corporate unallocated [Member]      
Operating expenses 831 769 609
Operating (loss) profit from continuing operations 831 769 609
Other income (expenses) (457) 32 334
(Loss) profit before provision for income taxes and non-controlling interests (1,288) (737) (275)
Net (loss) profit from continuing operations (1,288) (737) (275)
Total assets 17 13  
Operating Segments | LCD/LED Products      
Operating expenses 616 933 1,504
Operating (loss) profit from continuing operations 616 933 1,504
Other income (expenses) (306) 165 262
(Loss) profit before provision for income taxes and non-controlling interests (922) (768) (1,242)
Net (loss) profit from continuing operations (922) (768) (1,242)
Identifiable long-lived assets 1 2  
Total assets 375 1,018  
Operating Segments | Green energy products and services      
Total assets   5,368  
Operating Segments | Money lending services [Member]      
Revenues 1,667 3,930 980
Gross (loss) profit 1,565 3,798 912
Operating expenses 3,048 1,971 45
Operating (loss) profit from continuing operations 1,483 (1,827) (867)
Other income (expenses) 22 2  
(Loss) profit before provision for income taxes and non-controlling interests (1,461) 1,829 867
Income tax benefit (expense) (534) (522) (175)
Net (loss) profit from continuing operations (1,995) 1,307 692
Identifiable long-lived assets 468 478  
Total assets 25,625 46,140  
Operating Segments | Property lease and management      
Revenues 1,130 1,185 590
Gross (loss) profit (1,193) (1,064) (599)
Operating expenses 4,889 (207) 616
Operating (loss) profit from continuing operations 6,082 857 1,215
Other income (expenses) (159)    
(Loss) profit before provision for income taxes and non-controlling interests (6,241) (857) (1,215)
Income tax benefit (expense) 400 112 159
Net (loss) profit from continuing operations (5,841) (745) $ (1,056)
Identifiable long-lived assets 51,667 54,605  
Total assets 52,116 65,383  
Operating Segments | Financial technology solutions and services      
Revenues 1,496    
Gross (loss) profit (1,438)    
Operating expenses 56,892    
Operating (loss) profit from continuing operations 58,330    
Other income (expenses) 10    
(Loss) profit before provision for income taxes and non-controlling interests (58,320)    
Income tax benefit (expense) 443    
Net (loss) profit from continuing operations (57,877)    
Identifiable long-lived assets 451    
Total assets $ 11,997 $ 21,795