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Financial Instruments (Schedule Of Trading Securities) (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Investments-trading | $ 219,462 | $ 202,257
U.S. government agency MBS and CMOs [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Investments-trading | 62,497 | 87,608
U.S. government agency debt securities [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Investments-trading | 14,537 | 13,529
RMBS [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Investments-trading | 16 | 32
U.S. Treasury securities [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Investments-trading | 4,139 | 2,466
ABS [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Investments-trading | 100 | 1
SBA loans [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Investments-trading | 57,596 | 4,780
Corporate bonds and redeemable preferred stock [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Investments-trading | 49,945 | 43,435
Foreign government bonds [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Investments-trading | 232 | 483
Municipal bonds [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Investments-trading | 24,139 | 45,709
Certificates of deposit [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Investments-trading | 918 |
Derivatives [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Investments-trading | 5,277 | 1,118
Equity securities [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Investments-trading | $ 66 | $ 3,096

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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