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Schedule IV (Consolidated) - Mortgage Loans on Real Estate - Carrying Amount of Mortgage Loans (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Changes in carrying amount of mortgage loans      
Balance at beginning of the year $ 10,321 $ 2,683 $ 1,462
Additions during the year - new mortgage loans 7,798 9,615 2,386
Collections of principal 6,005 1,949 1,165
Foreclosures 128    
Other 44 28  
Balance at the end of the year $ 11,942 $ 10,321 $ 2,683