| **Transfers Accounted for as Secured Borrowings (Tables)**                                       | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
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| **Banking and Thrift [Abstract]**                                                                |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| Schedule of Collateral Pledged for all Repurchase Agreements Accounted for as Secured Borrowings | The collateral pledged for all repurchase agreements that are accounted for as secured borrowings as of December 31, 2016 and 2015 were:December 31, 2016Remaining Contractual Maturity of the AgreementsOvernight and ContinuousUp to 30 Days30-90 DaysGreater Than 90 DaysTotalU.S. Government-sponsored mortgage-backed securities$129,6171,33710,253$5,273$146,480December 31, 2015Remaining Contractual Maturity of the AgreementsOvernight and ContinuousUp to 30 Days30-90 DaysGreater Than 90 DaysTotalU.S. Government-sponsored mortgage-backed securities$131,5375,6808,892$9,216$155,325 |

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| - References
No definition available.
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| - Definition
The entire disclosure for repurchase agreements.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(m)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690
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