Cover
Cover - USD ($) | 12 Months Ended | ||
Dec. 31, 2020 | Apr. 29, 2021 | Jun. 30, 2020 | |
Entity Information [Line Items] | |||
Document Type | 10-K/A | ||
Amendment Flag | false | ||
Document Annual Report | true | ||
Document Transition Report | false | ||
Document Period End Date | Dec. 31, 2020 | ||
Document Fiscal Period Focus | FY | ||
Document Fiscal Year Focus | 2020 | ||
Current Fiscal Year End Date | --12-31 | ||
Entity File Number | 001-34516 | ||
Entity Registrant Name | Cowen Inc. | ||
Entity Central Index Key | 0001466538 | ||
Entity Tax Identification Number | 27-0423711 | ||
Entity Incorporation, State or Country Code | DE | ||
Entity Address, Address Line One | 599 Lexington Avenue | ||
Entity Address, City or Town | New York | ||
Entity Address, State or Province | NY | ||
Entity Address, Postal Zip Code | 10022 | ||
City Area Code | 212 | ||
Local Phone Number | 845-7900 | ||
Entity Well-known Seasoned Issuer | No | ||
Entity Voluntary Filers | No | ||
Entity Current Reporting Status | Yes | ||
Entity Interactive Data Current | Yes | ||
Entity Filer Category | Accelerated Filer | ||
Entity Small Business | false | ||
Entity Emerging Growth Company | false | ||
Entity Shell Company | false | ||
Entity Public Float | $ 429,938,446 | ||
Entity Common Stock, Shares Outstanding | 26,866,951 | ||
ICFR Auditor Attestation Flag | false | ||
Common Class A [Member] | |||
Entity Information [Line Items] | |||
Title of 12(b) Security | Class A Common Stock, par value $0.01 per share | ||
Trading Symbol | COWN | ||
Security Exchange Name | NASDAQ | ||
7.75% Senior Notes due 2033 [Member] | |||
Entity Information [Line Items] | |||
Title of 12(b) Security | 7.75% Senior Notes due 2033 | ||
Trading Symbol | COWNL | ||
Security Exchange Name | NASDAQ |