Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues
Investment banking	$ 105,028	$ 80,106
Brokerage	139,362	97,463
Management fees	11,604	7,141
Incentive income	0	15
Interest and dividends	42,077	29,092
Reimbursement from affiliates	261	288
Reinsurance premiums	10,471	6,591
Other revenues	1,850	1,061
Consolidated Funds
Interest and dividends	2,525	2,325
Other revenues	631	15
Total revenues	313,809	224,097
Interest and dividends expense	38,792	29,084
Total net revenues	275,017	195,013
Expenses
Employee compensation and benefits	124,428	131,882
Brokerage and trade execution costs	32,886	25,646
Underwriting expenses	3,640	3,131
Professional, advisory and other fees	11,039	10,241
Service fees	6,837	5,664
Communications	8,176	8,081
Occupancy and equipment	9,530	9,922
Depreciation and amortization	5,442	4,956
Client services and business development	11,803	11,301
Reinsurance claims, commissions and amortization of deferred acquisition costs	10,430	6,162
Other expenses	4,228	4,015
Consolidated Funds
Interest and dividends	1,252	867
Professional, advisory and other fees	990	145
Brokerage and trade execution costs	20	53
Other expenses	452	417
Total expenses	231,153	222,483
Other income (loss)
Net gains (losses) on securities, derivatives and other investments	(43,983)	39,084
Consolidated Funds
Net realized and unrealized gains (losses) on investments and other transactions	(73,419)	2,644
Net realized and unrealized gains (losses) on derivatives	276	(762)
Net gains (losses) on foreign currency transactions	(22)	(24)
Total other income (loss)	(117,148)	40,942
Income (loss) before income taxes	(73,284)	13,472
Income tax expense (benefit)	(1,173)	3,177
Net income (loss)	(72,111)	10,295
Net Income (Loss) Attributable to Noncontrolling Interest	(62,188)	512
Net income (loss) attributable to Cowen Inc.	(9,923)	9,783
Preferred stock dividends	1,698	1,698
Net income (loss) attributable to Cowen Inc. common stockholders	$ (11,621)	$ 8,085
Weighted average common shares outstanding:
Basic (in shares)	28,598	29,750
Diluted (in shares)	28,598	31,625
Earnings (loss) per share:
Earnings Per Share, Basic (in dollars per share)	$ (0.41)	$ 0.27
Earnings Per Share, Diluted (in dollars per share)	$ (0.41)	$ 0.26