Condensed Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Assets
Cash and cash equivalents	$ 463,554	$ 415,379
Cash segregated under regulatory requirements	223,446	220,735
Securities owned	58,685	57,525
Marketable securities	278	14,228
Receivables from broker-dealers, clearing organizations, customers and related broker-dealers	1,101,586	551,445
Accrued commissions and other receivables, net	733,933	778,415
Loans, forgivable loans and other receivables from employees and partners, net	370,770	315,590
Fixed assets, net	214,296	204,841
Investments	38,751	40,349
Goodwill	552,023	553,745
Other intangible assets, net	296,403	303,224
Receivables from related parties	12,255	14,273
Other assets	436,374	446,371
Total assets	4,502,354	3,916,120
Liabilities, Redeemable Partnership Interest, and Equity
Short-term borrowings	3,652	4,962
Securities loaned		13,902
Accrued compensation	235,161	215,085
Payables to broker-dealers, clearing organizations, customers and related broker-dealers	961,075	416,566
Payables to related parties	29,960	72,497
Accounts payable, accrued and other liabilities	1,195,512	1,283,046
Notes payable and other borrowings	1,290,973	1,142,687
Total liabilities	3,716,333	3,148,745
Commitments, contingencies and guarantees (Note 20)
Redeemable partnership interest	23,343	23,638
Stockholders’ equity:
Additional paid-in capital	2,308,973	2,271,947
Treasury stock, at cost: 50,525 shares of Class A common stock at each of June 30, 2020 and December 31, 2019	(315,308)	(315,308)
Retained deficit	(1,253,434)	(1,241,754)
Accumulated other comprehensive income (loss)	(46,570)	(33,102)
Total stockholders’ equity	697,758	685,826
Noncontrolling interest in subsidiaries	64,920	57,911
Total equity	762,678	743,737
Total liabilities, redeemable partnership interest, and equity	4,502,354	3,916,120
Class A Common Stock [Member]
Stockholders’ equity:
Common stock value	3,638	3,584
Class B Common Stock [Member]
Stockholders’ equity:
Common stock value	$ 459	$ 459