Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
REVENUE
Investment banking and other advisory fees	$ 410,275	$ 286,609	$ 745,191	$ 551,752
Asset management fees	293,879	241,397	566,803	475,128
Interest income	1,609	1,168	3,263	2,540
Other	24,183	17,468	52,109	27,338
Total revenue	729,946	546,642	1,367,366	1,056,758
Interest expense	12,766	11,962	26,722	23,860
Net revenue	717,180	534,680	1,340,644	1,032,898
OPERATING EXPENSES
Compensation and benefits	414,612	308,310	776,413	605,520
Occupancy and equipment	30,828	27,163	58,312	54,170
Marketing and business development	24,027	23,877	43,779	43,565
Technology and information services	32,032	24,296	56,056	47,227
Professional services	11,234	11,245	22,696	21,007
Fund administration and outsourced services	18,338	15,895	34,251	29,330
Amortization and other acquisition-related costs	1,257	330	4,831	974
Other	12,351	10,328	21,608	19,492
Total operating expenses	544,679	421,444	1,017,946	821,285
OPERATING INCOME	172,501	113,236	322,698	211,613
Provision for income taxes	51,600	31,872	91,367	59,526
NET INCOME	120,901	81,364	231,331	152,087
LESS - NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	523	1,007	3,400	4,907
NET INCOME ATTRIBUTABLE TO LAZARD LTD	$ 120,378	$ 80,357	$ 227,931	$ 147,180
WEIGHTED AVERAGE SHARES OF COMMON STOCK OUTSTANDING:
Basic	122,368,150	125,461,948	122,591,656	125,751,195
Diluted	132,139,616	132,341,522	132,414,496	132,616,403
NET INCOME PER SHARE OF COMMON STOCK:
Basic	$ 0.98	$ 0.64	$ 1.86	$ 1.17
Diluted	0.91	0.61	1.72	1.11
DIVIDENDS DECLARED PER SHARE OF COMMON STOCK	$ 0.41	$ 0.38	$ 1.99	$ 1.93