Noncontrolling Interest (Tables)

12 Months Ended

Dec. 31, 2021

Noncontrolling Interest [Abstract]

Schedule of Issued and Outstanding Common Shares

The following table presents the changes in Equity Commonwealth’s issued and outstanding common shares and units for the year ended December 31, 2021:

	Common Shares	OP Units and LTIP Units	Total
Outstanding at January 1, 2021	121,522,555	243,516	121,766,071
Repurchase and surrender of shares	(6,981,370)	—	(6,981,370)
Share-based compensation grants and vesting, net of forfeitures	664,633	3,701	668,334
Outstanding at December 31, 2021	115,205,818	247,217	115,453,035
Noncontrolling ownership interest in the Operating Trust			0.21	%

Schedule of Issued and Outstanding Units

The following table presents the changes in Equity Commonwealth’s issued and outstanding common shares and units for the year ended December 31, 2021:

	Common Shares	OP Units and LTIP Units	Total
Outstanding at January 1, 2021	121,522,555	243,516	121,766,071
Repurchase and surrender of shares	(6,981,370)	—	(6,981,370)
Share-based compensation grants and vesting, net of forfeitures	664,633	3,701	668,334
Outstanding at December 31, 2021	115,205,818	247,217	115,453,035
Noncontrolling ownership interest in the Operating Trust			0.21	%

The table below presents a summary of restricted share, RSU and LTIP Unit activity for the years ended December 31, 2021, 2020 and 2019:

	Number of Restricted Shares and Time-Based LTIP Units	Weighted Average Grant Date Fair Value		Number of RSUs and Market-Based LTIP Units	Weighted Average Grant Date Fair Value
Outstanding at December 31, 2018	425,888	$	28.70	2,046,644	$	15.47
Granted	138,819	32.20		568,609	15.91
Vested	(164,074)	28.60		(384,811)	15.53
Not earned(1)	—	—		(225,654)	15.57
Forfeited	(319)	31.08		(1,613)	15.56
Outstanding at December 31, 2019	400,314	$	29.95	2,003,175	$	15.57
Granted	136,356	32.47		532,243	16.12
Vested	(149,103)	29.65		(473,369)	15.79
Not earned(1)	—	—		(97,131)	15.97
Forfeited(2)	(1,879)	31.41		—	—
Outstanding at December 31, 2020	385,688	$	31.52	1,964,918	$	15.65
Granted	144,672	28.06		619,750	15.19
Vested	(188,990)	30.99		(605,096)	15.31
Not earned(1)	—	—		—	—
Forfeited	—	—		—	—
Outstanding at December 31, 2021	341,370	$	30.35	1,979,572	$	15.61

(1) The table presents the maximum number of shares issued or issuable from outstanding equity awards. RSUs and market-based LTIP Units not earned are the shares market-based award recipients do not receive based on the performance measurement completed at the end of the performance period.

(2) Restricted shares forfeited as a result of a resignation of an independent Trustee in November 2020.