CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Mortgage loans receivable, loan loss reserve	$ 2,360	$ 2,190
Straight-line rent receivable, allowance for doubtful accounts	$ 907	$ 833
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	60,000,000	60,000,000
Common stock, shares issued	39,222,000	37,548,000
Common stock, shares outstanding	39,222,000	37,548,000
Senior Unsecured Debt
Debt issue costs, net	$ 1,038	$ 1,095