Post-effective amendment to a registration statement that is not immediately effective upon filing

BUSINESS AND BASIS OF PRESENTATION (Details)

v3.21.2
BUSINESS AND BASIS OF PRESENTATION (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Issuance of Convertible Preferred Stock $ 32,400 $ 8,000 $ 35,000
Series F And F 1 Preferred Stock [Member]      
Issuance of Convertible Preferred Stock Date     October 19, 2018
Issuance of Convertible Preferred Stock     $ 30,000
Series F Preferred Stock [Member]      
Issuance of Convertible Preferred Stock Date   September 20, 2019 November 20, 2018
Issuance of Convertible Preferred Stock   $ 8,000 $ 5,000
Series G Preferred Stock [Member]      
Issuance of Convertible Preferred Stock 22,000    
Series H Preferred Stock [Member]      
Issuance of Convertible Preferred Stock $ 10,400