CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION - USD ($) $ in Thousands		Sep. 30, 2021	Dec. 31, 2020
ASSETS
Cash and cash equivalents	[1]	$ 152,615	$ 33,325
Short-term investments in U.S. Treasury Bills		0	64,988
Investments in securities, at fair value		29,561	25,845
Investment advisory fees receivable		24,187	28,796
Receivable from brokers		4,629	5,833
Receivable from affiliates		3,310	4,882
Goodwill and identifiable intangible assets		3,176	3,176
Deferred tax asset and income tax receivable		9,058	9,462
Other assets		9,794	9,095
Total assets		236,330	185,402
LIABILITIES AND STOCKHOLDERS' EQUITY
Income taxes payable		2,414	3,910
Lease liability obligations		6,767	5,208
Compensation payable		47,767	21,543
Securities Sold, not yet purchased		0	799
Payable to affiliates		450	3,843
Accrued expenses and other liabilities		38,645	38,973
Sub-total		96,043	74,276
5.875% Senior Notes (net of issuance costs of $10) (due June 1, 2021) (Note 7)		0	24,215
Subordinated Notes (net of issuance costs of $88) (due June 15, 2023) (Note 7)		52,102	0
Total liabilities		148,145	98,491
Commitments and contingencies (Note 10)
Stockholders' Equity
Preferred stock, $0.001 par value; 10,000,000 shares authorized; none issued and outstanding		0	0
Additional paid-in capital		24,241	21,219
Retained earnings		400,452	394,386
Accumulated other comprehensive loss		(181)	(165)
Treasury stock, at cost (8,490,121 and 8,142,732 shares, respectively)		(336,360)	(328,562)
Total stockholders' equity		88,185	86,911
Stockholders' Equity
Total liabilities and stockholders' equity		236,330	185,402
Class A [Member]
Stockholders' Equity
Common stock		14	14
Class B [Member]
Stockholders' Equity
Common stock		$ 19	$ 19

[1] Includes U.S. Treasury Bills with maturities of three months or less when purchased of $138 million and $15 million at September 30, 2021 and December 31, 2020, respectively.