Annual report pursuant to Section 13 and 15(d)

FAIR VALUE (Details)

v3.20.4
FAIR VALUE (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Fair value    
Restricted investment securities - trading $ 989 $ 1,150
Total assets measured at fair value on a recurring basis 989 1,150
Level 1 - Quoted Prices in Active Markets for Identical Assets    
Fair value    
Restricted investment securities - trading 989 1,150
Total assets measured at fair value on a recurring basis 989 1,150
Level 2 - Significant Other Observable Inputs    
Fair value    
Restricted investment securities - trading 0 0
Total assets measured at fair value on a recurring basis 0 0
Level 3 - Significant Unobservable Inputs    
Fair value    
Restricted investment securities - trading 0 0
Total assets measured at fair value on a recurring basis $ 0 $ 0