CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Rental income	$ 133,997	$ 141,316	$ 266,419	$ 288,670
Expenses:
Real estate taxes	15,901	16,583	31,234	33,228
Utility expenses	5,742	5,820	13,002	12,685
Other operating expenses	26,634	26,497	52,691	53,860
Depreciation and amortization	51,601	57,536	103,293	118,005
Loss on impairment of real estate	0	4,773	0	21,820
Acquisition and transaction related costs	11,181	224	14,399	224
General and administrative	5,785	7,083	11,710	12,789
Total expenses	116,844	118,516	226,329	252,611
Gain (loss) on sale of real estate	(2,305)	(11,637)	243	(9,488)
Interest and other income	337	16	501	17
Interest expense (including net amortization of debt premiums, discounts and issuance costs of $2,327, $2,366, $4,532 and $4,770, respectively)	(26,525)	(26,515)	(51,756)	(53,954)
Loss on early extinguishment of debt	0	(77)	0	(77)
Loss before income tax (expense) benefit and equity in net losses of investees	(11,340)	(15,413)	(10,922)	(27,443)
Income tax (expense) benefit	(211)	190	(241)	(341)
Equity in net losses of investees	(691)	(833)	(1,525)	(1,679)
Net loss	$ (12,242)	$ (16,056)	$ (12,688)	$ (29,463)
Weighted average common shares outstanding (basic) (in shares)	48,354	48,249	48,345	48,246
Weighted average common shares outstanding (diluted) (in shares)	48,354	48,249	48,345	48,246
Per common share amounts (basic and diluted):
Net loss (basic) (in dollars per share)	$ (0.25)	$ (0.33)	$ (0.27)	$ (0.61)
Net loss (diluted) (in dollars per share)	$ (0.25)	$ (0.33)	$ (0.27)	$ (0.61)