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Equity - Capital Purchase Program Warrants (Details) - $ / shares shares in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2017
Class of Warrant or Right [Line Items] |  |  |  |  |
Warrants outstanding | 2.1 |  | 2.1 |  | 2.2
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ 8.886 |  | $ 8.886 |  | $ 8.999
Warrant [Member] |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Warrants Exercised | 0.1 | 0.6 | 0.2 | 1.7 |

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- Definition Warrants Exercised + References No definition available. + Details
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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(4)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Number of warrants or rights outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Details
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