Stockholders' Equity of the Company (Tables)

12 Months Ended

Dec. 31, 2021

Stockholders' Equity Note [Abstract]

Class of Treasury Stock

As of December 31, 2021, share repurchases, excluding the redemption of OP Units, executed under the program were as follows:

Period	Shares repurchased	Average price paid per share	Cumulative number of shares repurchased as part of the repurchase plan or programs
Year ended 2017	7,865,206	$107.81	7,865,206
Year ended 2018	9,187,480	$102.06	17,052,686
Year ended 2019	4,333,260	$88.69	21,385,946
Year ended 2020	8,285,460	$64.30	29,671,406
Year ended 2021	4,474,649	$75.44	34,146,055

Schedule of Common Stock Issued and Proceeds Received Dividend Reinvestments

The following table summarizes SL Green common stock issued, and proceeds received from dividend reinvestments and/or stock purchases under the DRSPP for the years ended December 31, 2021, 2020, and 2019, respectively (dollars in thousands):

	Year Ended December 31,
	2021		2020		2019
Shares of common stock issued	10,387		16,181		3,645
Dividend reinvestments/stock purchases under the DRSPP	$	738	$	1,006	$	334

Schedule of Earnings Per Share

SL Green's earnings per share for the years ended December 31, 2021, 2020, and 2019 are computed as follows (in thousands):

	Year Ended December 31,
Numerator	2021		2020		2019
Basic Earnings:
Income attributable to SL Green common stockholders	$	434,804	$	356,105	$	255,484
Less: distributed earnings allocated to participating securities	(2,398)		(1,685)		(1,700)
Less: undistributed earnings allocated to participating securities	(192)		(137)		—
Net income attributable to SL Green common stockholders (numerator for basic earnings per share)	$	432,214	$	354,283	$	253,784
Add back: dilutive effect of earnings allocated to participating securities and contingently issuable shares	2,039		1,685		1,700
Add back: undistributed earnings allocated to participating securities	192		137		—
Add back: Effect of dilutive securities (redemption of units to common shares)	25,457		20,016		13,301
Income attributable to SL Green common stockholders (numerator for diluted earnings per share)	$	459,902	$	376,121	$	268,785

	Year Ended December 31,
Denominator	2021	2020	2019
Basic Shares:
Weighted average common stock outstanding	65,740	70,397	77,057
Effect of Dilutive Securities:
Operating Partnership units redeemable for common shares	3,987	4,096	4,275
Stock-based compensation plans	705	441	533
Contingently issuable shares	337	144	—
Diluted weighted average common stock outstanding	70,769	75,078	81,865