General form of registration statement for all companies including face-amount certificate companies

LEASES - Lease Terms and Discount Rates (Details)

v3.22.0.1
LEASES - Lease Terms and Discount Rates (Details) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2021
Dec. 31, 2020
Dec. 31, 2019
LEASES      
Weighted average remaining lease term: Operating leases (in years) 0 years 6 months  
Weighted average remaining lease term: Financing leases (in years) 3 years 1 month 6 days 3 years 3 months 18 days  
Weighted average discount rate: Operating leases (as a percent)   6.90%  
Weighted average discount rate: Financing leases (as a percent) 8.10% 7.90%  
ROU assets acquired in exchange for finance lease liabilities $ 431 $ 513 $ 586