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Loans Loans (Analysis of Troubled Debt Restructurings) (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 USD ($) Modifications contract | Jun. 30, 2017 USD ($) Modifications contract | Jun. 30, 2018 USD ($) Modifications contract | Jun. 30, 2017 USD ($) Modifications contract | Dec. 31, 2017 USD ($)
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract | 0 | 0 | 0 | 0 |
Loans and Leases Receivable, Related Parties | $ 9,800 |  | $ 9,800 |  | $ 10,000
Financing Receivable Modifications Additional Commitment To Lend | $ 651 |  | $ 651 |  | $ 506
Loans, Excluding Purchased Credit Impaired Loans [Member] |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts | Modifications | 15 | 11 | 24 | 24 |
Financing Receivable, Modifications, Pre-Modification Recorded Investment | $ 3,918 | $ 2,619 | $ 6,402 | $ 4,521 |
Financing Receivable, Modifications, Post-Modification Recorded Investment | $ 3,918 | $ 2,619 | $ 6,402 | $ 4,521 |
Loans, Excluding Purchased Credit Impaired Loans [Member] | Secured Loans [Member] |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts | Modifications | 7 | 2 | 8 | 5 |
Financing Receivable, Modifications, Pre-Modification Recorded Investment | $ 2,644 | $ 1,422 | $ 3,094 | $ 1,778 |
Financing Receivable, Modifications, Post-Modification Recorded Investment | $ 2,644 | $ 1,422 | $ 3,094 | $ 1,778 |
Loans, Excluding Purchased Credit Impaired Loans [Member] | One-to-Four Family Residential [Member] |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts | Modifications | 0 | 1 | 0 | 1 |
Financing Receivable, Modifications, Pre-Modification Recorded Investment | $ 0 | $ 382 | $ 0 | $ 382 |
Financing Receivable, Modifications, Post-Modification Recorded Investment | $ 0 | $ 382 | $ 0 | $ 382 |
Loans, Excluding Purchased Credit Impaired Loans [Member] | Income Property Multifamily [Member] |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts | Modifications |  |  | 1 | 0 |
Financing Receivable, Modifications, Pre-Modification Recorded Investment |  |  | $ 891 | $ 0 |
Financing Receivable, Modifications, Post-Modification Recorded Investment |  |  | $ 891 | $ 0 |
Loans, Excluding Purchased Credit Impaired Loans [Member] | Consumer Portfolio Segment [Member] |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts | Modifications | 8 | 8 | 15 | 18 |
Financing Receivable, Modifications, Pre-Modification Recorded Investment | $ 1,274 | $ 815 | $ 2,417 | $ 2,361 |
Financing Receivable, Modifications, Post-Modification Recorded Investment | $ 1,274 | $ 815 | $ 2,417 | $ 2,361 |

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