Equity - Reclassifications of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning equity balance, value	$ 738,246	$ 821,736	$ 757,382	$ 807,888
Interest expense	16,578	16,488	32,987	33,269
Equity in earnings of equity method investments in real estate, net	1,401	1,075	860	51
Ending equity balance, value	719,134	802,762	719,134	802,762
Accumulated Other Comprehensive Loss
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning equity balance, value	(411)	(152)	(286)	(455)
Ending equity balance, value	(420)	(26)	(420)	(26)
AOCI Including Portion Attributable to Noncontrolling Interest
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Other comprehensive (loss) income before reclassifications	(27)	(102)	(178)	45
Total	20	212	46	380
Net current period other comprehensive (loss) income	(7)	110	(132)	425
AOCI Including Portion Attributable to Noncontrolling Interest \| Reclassification out of Accumulated Other Comprehensive Income
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Interest expense	17	212	43	380
Equity in earnings of equity method investments in real estate, net	3	0	3	0
AOCI Attributable to Noncontrolling Interest
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Net current period other comprehensive (income) loss attributable to noncontrolling interests	$ (2)	$ 16	$ (2)	$ 4

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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

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Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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