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

BASIS OF PRESENTATION - Credit Risk (Details)

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BASIS OF PRESENTATION - Credit Risk (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Sep. 30, 2023
Jun. 30, 2023
Dec. 31, 2022
Dec. 31, 2021
Concentration Risk [Line Items]            
Cash $ 376 $ 123     $ 905  
Accounts receivable, net 2,065 3,601 $ 5,632 $ 8,707 15,143 $ 27,810
Due from MSAs         5,006  
Credit Risk            
Concentration Risk [Line Items]            
Cash 376 123     905  
Accounts receivable, net 2,065 3,601     15,143  
Due from MSAs         4,913  
Total $ 2,441 $ 3,724     $ 20,961