CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenues:
Rental income	$ 80,205	$ 109,888
Tenant reimbursements and other income	19,346	27,247
Total revenues	99,551	137,135
Expenses:
Operating expenses	41,087	57,258
Depreciation and amortization	26,915	36,251
General and administrative	12,078	13,312
Loss on asset impairment	1,286	0
Total expenses	81,366	106,821
Operating income	18,185	30,314
Interest and other income	4,372	1,967
Interest expense (including net amortization of debt discounts, premiums and deferred financing fees of $713 and $983, respectively)	(15,014)	(22,347)
Loss on early extinguishment of debt	0	(118)
Foreign currency exchange loss	0	(5)
Gain on sale of properties, net	16,454	36,666
Income before income taxes	23,997	46,477
Income tax expense	(175)	(75)
Net income	23,822	46,402
Net income attributable to noncontrolling interest	(8)	0
Net income attributable to Equity Commonwealth	23,814	46,402
Preferred distributions	(1,997)	(6,981)
Net income attributable to Equity Commonwealth common shareholders	$ 21,817	$ 39,421
Weighted average common shares outstanding — basic (in shares)	124,047	125,840
Weighted average common shares outstanding — diluted (in shares)	125,150	127,522
Earnings per common share attributable to Equity Commonwealth common shareholders:
Basic (in USD per share)	$ 0.18	$ 0.31
Diluted (in USD per share)	$ 0.17	$ 0.31