SCHEDULE IV - MORTGAGE LOANS - Roll Forward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Abstract]
Balance at January 1,	$ 143,087	$ 114,893	$ 102,143
Additions	15,312	60,154	21,291
Deductions	(27,773)	(31,960)	(8,541)
Balance at December 31,	$ 130,626	$ 143,087	$ 114,893