Schedule IV (Consolidated) - Mortgage Loans on Real Estate - Carrying Amount of Mortgage Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Changes in carrying amount of mortgage loans
Balance at beginning of the year	$ 11,942	$ 10,321	$ 2,683
Additions during the year - new mortgage loans		7,798	9,615
Collections of principal	10,699	6,005	1,949
Foreclosures		128
Other additions	(72)
Other		44	28
Balance at the end of the year	$ 1,315	$ 11,942	$ 10,321