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

Fair Value Measurements - Fair Assets and Liabilities at Fair Value on Recurring Basis (Details)

v3.22.1
Fair Value Measurements - Fair Assets and Liabilities at Fair Value on Recurring Basis (Details) - Fair Value, Recurring - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Level 1      
Assets:      
Assets, fair value $ 71,943 $ 96,661 $ 4
Level 1 | Money market funds, included in cash and cash equivalents      
Assets:      
Assets, fair value 71,943 96,661 4
Level 2      
Assets:      
Assets, fair value 0 0 0
Level 2 | Money market funds, included in cash and cash equivalents      
Assets:      
Assets, fair value 0 0 0
Level 3      
Assets:      
Assets, fair value 0 0 0
Level 3 | Money market funds, included in cash and cash equivalents      
Assets:      
Assets, fair value $ 0 $ 0 $ 0