CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Properties held-for-sale, accumulated depreciation	$ 35,113	$ 1,916
Mortgage loans receivable, loan loss reserve	2,560	2,447
Notes receivable, loan loss reserve	181	128
Straight-line rent receivable, allowance for doubtful accounts	$ 0	$ 746
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	60,000	60,000
Common stock, shares issued	39,752	39,657
Common stock, shares outstanding	39,752	39,657
Senior Unsecured Notes
Debt issue costs, net	$ 812	$ 938