Annual report pursuant to Section 13 and 15(d)

LEASE AGREEMENTS (Details)

v3.20.4
LEASE AGREEMENTS (Details)
12 Months Ended
Jan. 01, 2019
USD ($)
Dec. 31, 2020
USD ($)
item
Dec. 31, 2019
USD ($)
Feb. 28, 2017
ft²
Dec. 31, 2014
ft²
Sublease Agreement          
Number of lease renewal periods | item   2      
Lease renewal term (in years)   5 years      
Area of real estate property (square feet) | ft²       9,328 57,000
Expected income from sublease   $ 9,600,000      
Right-of-use assets   17,895,000 $ 25,709,000    
Lease liability   $ 19,300,000      
Weighted average remaining lease term   2 years 29 days      
Accounting Standards Update 2016-02          
Sublease Agreement          
Right-of-use assets $ 32,800,000        
Lease liability 33,200,000        
Derecognized deferred rent $ 399,000        
Estimated incremental borrowing rate for estimation of present value of lease payments 9.00%        
Cumulative-effect adjustment on accumulated deficit $ 0