CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Rental income	$ 137,683	$ 147,572	$ 426,353	$ 429,195
Expenses:
Real estate taxes	16,414	20,067	49,642	52,133
Utility expenses	7,986	7,389	20,671	19,131
Other operating expenses	27,737	26,537	81,597	76,874
Depreciation and amortization	52,988	59,533	170,993	178,991
Loss on impairment of real estate	0	(3)	21,820	55,854
Acquisition and transaction related costs	0	0	224	0
General and administrative	6,564	448	19,353	24,690
Total expenses	111,689	113,971	364,300	407,673
Gain on sale of real estate	16,925	36	7,437	54,154
Interest and other income	56	0	73	7
Interest expense (including net amortization of debt premiums, discounts and issuance costs of $2,176, $2,442, $6,946 and $7,366, respectively)	(24,969)	(26,929)	(78,923)	(84,728)
Loss on early extinguishment of debt	0	(2,274)	(77)	(14,068)
Income (loss) before income tax expense and equity in net losses of investees	18,006	4,434	(9,437)	(23,113)
Income tax expense	(90)	(34)	(431)	(348)
Equity in net losses of investees	(952)	(688)	(2,631)	(1,664)
Net income (loss)	$ 16,964	$ 3,712	$ (12,499)	$ (25,125)
Weighted average common shares outstanding (basic) (in shares)	48,286	48,211	48,260	48,179
Weighted average common shares outstanding (diluted) (in shares)	48,286	48,244	48,260	48,179
Per common share amounts (basic and diluted):
Net income (loss) per common share - basic (in dollars per share)	$ 0.35	$ 0.08	$ (0.27)	$ (0.52)
Net income (loss) per common share - diluted (in dollars per share)	$ 0.35	$ 0.08	$ (0.27)	$ (0.52)