Loss Per Share and Equity - Reclassifications of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation Of Accumulated Comprehensive Income
Beginning balance, value	$ 696,403	$ 731,785	$ 550,109
Interest expense	39,902	40,226	35,824
Equity in losses of equity method investments in real estate, net	(5,209)	(5,819)	(1,482)
Net current period other comprehensive (loss) income	(1,309)	(171)	484
Ending balance, value	662,644	696,403	731,785
Accumulated Other Comprehensive Income (Loss)
Reconciliation Of Accumulated Comprehensive Income
Beginning balance, value	1,205	1,373	896
Net current period other comprehensive (loss) income	(1,362)	(168)	477
Ending balance, value	(157)	1,205	1,373
AOCI Including Portion Attributable to Noncontrolling Interest
Reconciliation Of Accumulated Comprehensive Income
Other comprehensive (loss) income before reclassifications	(335)	544	265
Total	(974)	(715)	219
Net current period other comprehensive (loss) income	(1,309)	(171)	484
AOCI Including Portion Attributable to Noncontrolling Interest \| Reclassification out of Accumulated Other Comprehensive Income
Reconciliation Of Accumulated Comprehensive Income
Interest expense	(1,004)	(715)	219
Equity in losses of equity method investments in real estate, net	30	0	0
AOCI Attributable to Noncontrolling Interest
Reconciliation Of Accumulated Comprehensive Income
Net current period other comprehensive (income) loss attributable to noncontrolling interests	$ (53)	$ 3	$ (7)

Reconciliation Of Accumulated Comprehensive Income [Abstract]

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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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