Selected Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Summary of Unaudited Quarterly Results of Operations

	2013
	First Quarter(1)		Second Quarter(1)		Third Quarter(1)			Fourth Quarter
Total revenues	$	262,612	$	262,188	$	214,201		$	214,028
Net income (loss) attributable to Equity Commonwealth common shareholders	14,516		7,738		(227,466		)	(16,452		)
Net income (loss) attributable to Equity Commonwealth common shareholders per share—basic and diluted	0.15		0.07		(1.92		)	(0.14		)
Common distributions declared	0.25		0.25		0.25			0.25

(1) Amounts previously reported have been adjusted as follows:

	2013
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Total revenues as previously reported	$	242,653	$	246,181	$	198,283	$	198,419
Total revenues from properties reclassified to discontinued operations during 2014	19,959		16,007		15,918		15,609
Total revenues restated	$	262,612	$	262,188	$	214,201	$	214,028

The following is a summary of our unaudited quarterly results of operations for 2014 and 2013. Reclassifications have been made to the prior quarterly results to reflect properties reclassified from discontinued operations to continuing operations during 2014.

	2014
	First Quarter(1)		Second Quarter(1)			Third Quarter(1)		Fourth Quarter
Total revenues	$	217,260	$	215,194		$	216,595	$	212,808
Net income (loss) attributable to Equity Commonwealth common shareholders	9,297		(17,802		)	149,759		(165,542		)
Net income (loss) attributable to Equity Commonwealth common shareholders per share—basic and diluted	0.08		(0.14		)	1.16		(1.28		)
Common distributions declared	0.25		—			—		—

Schedule of Amounts Previously Reported and Adjustments

Amounts previously reported have been adjusted as follows:

	2013
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Total revenues as previously reported	$	242,653	$	246,181	$	198,283	$	198,419
Total revenues from properties reclassified to discontinued operations during 2014	19,959		16,007		15,918		15,609
Total revenues restated	$	262,612	$	262,188	$	214,201	$	214,028