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	$ 15,742	$ 23,995	$ 48,133	$ 93,459
Other revenue	743	2,740	3,437	8,396
Total revenues	16,485	26,735	51,570	101,855
Expenses:
Operating expenses	6,444	9,923	21,882	36,677
Depreciation and amortization	5,137	5,939	14,649	22,085
General and administrative	7,191	8,523	26,097	30,152
Total expenses	18,772	24,385	62,628	88,914
Interest and other income, net	2,606	19,401	18,944	57,871
Interest expense (including net amortization of debt discounts, premiums and deferred financing fees of $(3), $(55), $(119) and $264, respectively)	(9)	(321)	(620)	(8,597)
Gain (loss) on early extinguishment of debt	131	0	131	(6,374)
Gain on sale of properties, net	0	1,945	446,536	422,148
Income before income taxes	441	23,375	453,933	477,989
Income tax (expense) benefit	(71)	521	(170)	(1,119)
Net income	370	23,896	453,763	476,870
Net income attributable to noncontrolling interest	(1)	(10)	(803)	(180)
Net income attributable to Equity Commonwealth	369	23,886	452,960	476,690
Preferred distributions	(1,997)	(1,997)	(5,991)	(5,991)
Net (loss) income attributable to Equity Commonwealth common shareholders	$ (1,628)	$ 21,889	$ 446,969	$ 470,699
Weighted average common shares outstanding — basic (in shares)	121,673	122,140	121,824	122,075
Weighted average common shares outstanding — diluted (in shares)	121,673	123,564	126,282	125,938
Earnings per common share attributable to Equity Commonwealth common shareholders:
Basic (in dollars per share)	$ (0.01)	$ 0.18	$ 3.67	$ 3.86
Diluted (in dollars per share)	(0.01)	0.18	3.59	3.79
Distributions declared per common share (in dollars per share)	$ 3.50	$ 3.50	$ 3.50	$ 3.50