SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Valuation and qualifying accounts
Balance at beginning of period	$ 2,738	$ 2,741	$ 3,321
(Recovered) charged to costs and expenses	1,021	(3)	166
Charged to other accounts			(746)
Balance at end of period	$ 3,759	2,738	2,741
Percentage of provision on rent receivables (in percentage)	1.00%
Loan loss reserves
Valuation and qualifying accounts
Balance at beginning of period	$ 2,592	2,560	2,447
(Recovered) charged to costs and expenses	881	32	113
Balance at end of period	3,473	2,592	2,560
Other notes receivable allowance
Valuation and qualifying accounts
Balance at beginning of period	146	181	128
(Recovered) charged to costs and expenses	140	(35)	53
Balance at end of period	$ 286	$ 146	181
Straight-line rent receivable allowance
Valuation and qualifying accounts
Balance at beginning of period			746
Charged to other accounts			$ (746)