CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues:
Rental income	$ 74,352	$ 121,735	$ 154,557	$ 231,623
Tenant reimbursements and other income	17,247	23,632	36,593	50,879
Total revenues	91,599	145,367	191,150	282,502
Expenses:
Operating expenses	37,284	51,393	78,371	108,651
Depreciation and amortization	23,922	37,331	50,837	73,582
General and administrative	11,960	12,177	24,038	25,489
Loss on asset impairment	18,428	43,736	19,714	43,736
Total expenses	91,594	144,637	172,960	251,458
Operating income	5	730	18,190	31,044
Interest and other income	6,019	2,204	10,391	4,171
Interest expense (including net amortization of debt discounts, premiums and deferred financing fees of $849, $949, $1,562 and $1,932, respectively)	(14,863)	(21,300)	(29,877)	(43,647)
Loss on early extinguishment of debt	(63)	0	(63)	(118)
Foreign currency exchange loss	0	0	0	(5)
Gain on sale of properties, net	3,136	106,375	19,590	143,041
(Loss) income before income taxes	(5,766)	88,009	18,231	134,486
Income tax expense	(45)	(165)	(220)	(240)
Net (loss) income	(5,811)	87,844	18,011	134,246
Net loss (income) attributable to noncontrolling interest	2	0	(6)	0
Net (loss) income attributable to Equity Commonwealth	(5,809)	87,844	18,005	134,246
Preferred distributions	(1,997)	(6,981)	(3,994)	(13,962)
Excess fair value of consideration paid over carrying value of preferred shares	0	(9,609)	0	(9,609)
Net (loss) income attributable to Equity Commonwealth common shareholders	$ (7,806)	$ 71,254	$ 14,011	$ 110,675
Weighted average common shares outstanding — basic (in shares)	124,067	125,508	124,057	125,674
Weighted average common shares outstanding — diluted (in shares)	124,067	126,937	125,203	127,229
Earnings per common share attributable to Equity Commonwealth common shareholders:
Basic (in dollars per share)	$ (0.06)	$ 0.57	$ 0.11	$ 0.88
Diluted (in dollars per share)	$ (0.06)	$ 0.56	$ 0.11	$ 0.87