CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Rental and other property revenues	$ 120,956	$ 126,221	$ 119,663
Property operating expenses	59,587	64,091	62,950
General and administrative	12,708	7,691	7,119
Interest income	21,645	18,941	20,453
Mortgage and loan interest	66,063	66,171	59,362
Related Party [Member]
Rental and other property revenues	144	839	708
Property operating expenses	254	959	900
General and administrative	1,267	3,225	4,053
Interest income	5,406	16,298	18,864
Mortgage and loan interest	$ 2,240	$ 6,695	$ 5,300

Amount of expense incurred and directly related to generating revenue from leased and rented property or equipment.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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