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Equity (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2018
Equity [Abstract] |
Schedule Of Unrestricted Common Stock Activity |
﻿ |  |  |
﻿ |  |  | Common Stock
﻿ |  |  | Shares
﻿December 31, 2017 |  |  | 1,136,090
﻿Vesting of shares |  |  | 57,138
﻿Shares withheld and retired for employee taxes |  |  | (7,430)
﻿Repurchase and retirement of Common Stock |  |  | (57,757)
﻿September 30, 2018 |  |  | 1,128,041
﻿
Operating LLC Membership Units |
﻿ |  |  |
﻿ |  |  | Operating LLC
﻿ |  |  | Membership Units
﻿Units related to UIS Agreement |  |  | 247,120
﻿Units surrendered from retirement of Common Stock |  |  | (577,570)
﻿Total |  |  | (330,450)
﻿
Schedule Of Effects Of Changes In Ownership Interest Subsidiary |
﻿ |  |  |  |  |  |
﻿ |  |  |  |  |  |
﻿ |  |  | Nine Months Ended |  |  | Nine Months Ended
﻿ |  | September 30, 2018 |  | September 30, 2017
﻿Net income / (loss) attributable to Cohen & Company Inc. |  | $ | (2,045) |  | $ | 551
﻿ Transfers (to) from the non-controlling interest: |  |  |  |  |  |
﻿ Increase / (decrease) in Cohen & Company Inc. paid in capital |  |  |  |  |  |
﻿ for the acquisition / (surrender) of additional units in |  |  |  |  |  |
﻿ consolidated subsidiary, net |  |  | (139) |  |  | 153
﻿Changes from net income / (loss) attributable to Cohen & Company Inc. and transfers (to) from the non-controlling interest |  | $ | (2,184) |  | $ | 704
﻿

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- Definition The tabular disclosure of the effects of any changes in a parent's ownership interest in a subsidiary on the equity attributable to the parent if the ownership interests in a subsidiary changes during the period. The changes represented by this element did not result in the deconsolidation of the subsidiary. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4M -URI http://asc.fasb.org/extlink&oid=84234705&loc=SL4591554-111686 + Details
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