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

SHAREHOLDERS' (DEFICIT) EQUITY - Stock-based Compensation Expense (Details)

v3.24.2
SHAREHOLDERS' (DEFICIT) EQUITY - Stock-based Compensation Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Equity [Abstract]      
Stock-based compensation expense recognized $ 174 $ (300) $ 1,000
Unrecognized compensation cost $ 254 $ 440  
Unvested stock options (in shares) 790 9,453  
Weighted-average remaining vesting period 2 years 6 months 2 years 8 months 12 days