Condensed Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
ASSETS
Cash and cash equivalents	$ 979,899	$ 1,389,876
Deposits with banks and short-term investments	1,111,347	1,134,463
Restricted cash	614,291	44,488
Receivables (net of allowance for doubtful accounts of $36,244 and $36,649 at June 30, 2021 and December 31, 2020, respectively):
Fees	649,222	621,880
Customers and other	169,578	121,261
Total receivables, net	818,800	743,141
Investments	867,707	658,532
Property (net of accumulated amortization and depreciation of $408,935 and $402,471 at June 30, 2021 and December 31, 2020, respectively)	252,002	257,587
Operating lease right-of-use assets	479,238	513,923
Goodwill and other intangible assets (net of accumulated amortization of $70,260 and $70,155 at June 30, 2021 and December 31, 2020, respectively)	380,867	384,071
Deferred tax assets	492,364	538,448
Other assets	410,285	307,332
Total Assets	6,406,800	5,971,861
Liabilities:
Deposits and other customer payables	1,228,248	1,201,150
Accrued compensation and benefits	644,777	734,544
Operating lease liabilities	567,726	606,963
Senior debt	1,683,984	1,682,741
Deferred tax liabilities	1,335	1,041
Other liabilities	562,639	524,538
Total Liabilities	4,899,945	4,972,428
Commitments and contingencies
Redeemable noncontrolling interests	575,000
Common stock:
Class A, par value $.01 per share (500,000,000 shares authorized; 112,766,091 shares issued at June 30, 2021 and December 31, 2020, including shares held by subsidiaries as indicated below)	1,128	1,128
Additional paid-in-capital	58,000	135,439
Retained earnings	1,348,121	1,295,386
Accumulated other comprehensive loss, net of tax	(226,648)	(238,368)
Stockholders' equity subtotal before common stock held by subsidiaries and Noncontrolling interests, total	1,180,601	1,193,585
Class A common stock held by subsidiaries, at cost (8,705,297 and 7,728,387 shares at June 30, 2021 and December 31, 2020, respectively)	(353,718)	(281,813)
Total Lazard Ltd Stockholders’ Equity	826,883	911,772
Noncontrolling interests	104,972	87,661
Total Stockholders’ Equity	931,855	999,433
Total Liabilities, Redeemable Noncontrolling Interests and Stockholders’ Equity	6,406,800	5,971,861
LTBP Trust [Member]
Liabilities:
Tax receivable agreement obligation	211,236	221,451
Series A Preferred Stock [Member]
Preferred stock:
Preferred stock
Series B Preferred Stock [Member]
Preferred stock:
Preferred stock