CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues:
Rental revenue	$ 14,169	$ 17,143
Other revenue	682	1,677
Total revenues	14,851	18,820
Expenses:
Operating expenses	6,621	8,761
Depreciation and amortization	4,351	5,114
General and administrative	15,729	10,604
Total expenses	26,701	24,479
Interest and other income, net	1,843	11,895
Interest expense (including net amortization of debt premiums and deferred financing fees of $— and $(56), respectively)	0	(309)
Gain on sale of properties, net	0	419,620
(Loss) income before income taxes	(10,007)	425,547
Income tax expense	(31)	(40)
Net (loss) income	(10,038)	425,507
Net loss (income) attributable to noncontrolling interest	20	(748)
Net (loss) income attributable to Equity Commonwealth	(10,018)	424,759
Preferred distributions	(1,997)	(1,997)
Net (loss) income attributable to Equity Commonwealth common shareholders	$ (12,015)	$ 422,762
Weighted average common shares outstanding — basic (in shares)	122,002	122,148
Weighted average common shares outstanding — diluted (in shares)	122,002	126,605
Earnings per common share attributable to Equity Commonwealth common shareholders:
Basic (in dollars per share)	$ (0.10)	$ 3.46
Diluted (in dollars per share)	$ (0.10)	$ 3.35