Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues:
Rental revenue	$ 139,909	$ 150,225	$ 426,021	$ 434,713
Observatory revenue	4,419	37,575	24,049	91,039
Lease termination fees	331	2,361	1,575	3,112
Third-party management and other fees	283	304	930	955
Other revenue and fees	1,633	2,408	5,254	6,591
Total revenues	146,575	192,873	457,829	536,410
Operating expenses:
Property operating expenses	33,836	47,894	105,054	131,076
Ground rent expenses	2,331	2,331	6,994	6,994
General and administrative expenses	14,517	14,421	48,617	44,445
Observatory expenses	5,931	9,089	18,087	25,024
Real estate taxes	31,196	29,599	90,029	86,098
Impairment charges	2,103	0	6,204	0
Depreciation and amortization	44,733	44,260	143,609	135,179
Total operating expenses	134,647	147,594	418,594	428,816
Total operating income	11,928	45,279	39,235	107,594
Other income (expense):
Interest income	366	2,269	2,529	9,907
Interest expense	(23,360)	(19,426)	(66,906)	(60,712)
Loss on early extinguishment of debt	0	0	(86)	0
IPO litigation expense	(1,165)	0	(1,165)	0
Income (loss) before income taxes	(12,231)	28,122	(26,393)	56,789
Income tax benefit (expense)	(38)	(1,338)	2,794	(1,219)
Net income (loss)	(12,269)	26,784	(23,599)	55,570
Private perpetual preferred unit distributions	(1,050)	(234)	(3,147)	(702)
Net income (loss) attributable to common unitholders	$ (13,319)	$ 26,550	$ (26,746)	$ 54,868
Total weighted average units:
Basic (in units)	280,940	298,151	285,640	298,117
Diluted (in units)	280,940	298,151	285,640	298,117
Earnings per unit attributable to common unitholders:
Basic (in USD per unit)	$ (0.05)	$ 0.09	$ (0.10)	$ 0.18
Diluted (in USD per unit)	(0.05)	0.09	(0.10)	0.18
Dividends per unit (in USD per unit)	$ 0	$ 0.105	$ 0.210	$ 0.315