Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Non-cash financing and investing activities:
Distributions on common stock declared but not yet paid	$ 5,993	$ 8,878
Stock issued pursuant to distribution reinvestment plan	14,724	20,693
Accruals for construction in process	1,955	424
Repayments on borrowings through refinancing	24,469	72,845
Escrow deposits funded through refinancing	580
Non-cash activity related to sales:
Mortgage notes payable settled directly with proceeds from sale of rental property	29,497
Cash paid during the period for:
Interest	$ 24,930	$ 25,508