Net Income Per Share of Class A Common Stock (Tables)

12 Months Ended

Dec. 31, 2017

Company's Basic and Diluted Net Income Per Share and Weighted Average Shares Outstanding

The calculations of the Company’s basic and diluted net income per share and weighted average shares outstanding for the years ended December 31, 2017, 2016 and 2015 are presented below:

	Year Ended December 31,
	2017		2016		2015
Net income attributable to Lazard Ltd - basic	$	253,583	$	387,698	$	986,373
Net income attributable to Lazard Ltd - diluted	$	253,583	$	387,698	$	986,373
Weighted average number of shares of Class A common stock outstanding		121,309,174		124,635,160		125,294,261
Add - adjustment for shares of Class A common stock issuable on a non-contingent basis		264,268		135,241		72,011
Weighted average number of shares of Class A common stock outstanding - basic		121,573,442		124,770,401		125,366,272
Add - dilutive effect, as applicable, of:
Weighted average number of incremental shares of Class A common stock issuable from share-based incentive compensation		10,906,286		7,863,229		7,878,274
Weighted average number of shares of Class A common stock outstanding - diluted		132,479,728		132,633,630		133,244,546
Net income attributable to Lazard Ltd per share of Class A common stock:
Basic	$	2.09	$	3.11	$	7.87
Diluted	$	1.91	$	2.92	$	7.40