| **Fair Values of Assets and Liabilities (Measured on Recurring Basis) (Details) - USD ($) $ in Thousands** | Dec. 31, 2015 | Dec. 31, 2014 |
|------------------------------------------------------------------------------------------------------------|---------------|---------------|
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | $ 390,434     | $ 350,040     |
| Mortgage servicing rights                                                                                  | 2,200         | 1,700         |
| U.S. government sponsored agencies debt securities [Member]                                                |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 2,008         | 2,044         |
| Residential mortgage-backed securities - GSE [Member]                                                      |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 278,107       | 290,145       |
| Residential mortgage-backed securities - Private [Member]                                                  |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 33,577        | 17,271        |
| Commercial mortgage-backed securities - GSE [Member]                                                       |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 21,612        | 21,958        |
| Commercial mortgage-backed securities - Private [Member]                                                   |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 17,575        | 10,215        |
| Corporate notes [Member]                                                                                   |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 37,555        | 8,407         |
| Level 1 [Member]                                                                                           |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 0             | 0             |
| Level 2 [Member]                                                                                           |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 390,434       | 350,040       |
| Level 3 [Member]                                                                                           |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 0             | 0             |
| Recurring [Member]                                                                                         |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 390,434       | 350,039       |
| Mortgage servicing rights                                                                                  | 2,231         | 1,726         |
| Total assets at fair value                                                                                 | 391,910       | 351,240       |
| Recurring [Member] | Interest Rate Swap [Member]                                                           |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Mortgage servicing rights                                                                                  | (755)         | (525)         |
| Recurring [Member] | U.S. government sponsored agencies debt securities [Member]                           |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 2,008         | 2,044         |
| Recurring [Member] | Residential mortgage-backed securities - GSE [Member]                                 |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 278,107       | 290,145       |
| Recurring [Member] | Residential mortgage-backed securities - Private [Member]                             |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 33,578        | 17,271        |
| Recurring [Member] | Commercial mortgage-backed securities - GSE [Member]                                  |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 21,611        | 21,957        |
| Recurring [Member] | Commercial mortgage-backed securities - Private [Member]                              |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 17,575        | 10,215        |
| Recurring [Member] | Corporate notes [Member]                                                              |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 37,555        | 8,407         |
| Recurring [Member] | Level 1 [Member]                                                                      |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 0             | 0             |
| Mortgage servicing rights                                                                                  | 0             | 0             |
| Total assets at fair value                                                                                 | 0             | 0             |
| Recurring [Member] | Level 1 [Member] | Interest Rate Swap [Member]                                        |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Mortgage servicing rights                                                                                  | 0             | 0             |
| Recurring [Member] | Level 1 [Member] | U.S. government sponsored agencies debt securities [Member]        |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 0             | 0             |
| Recurring [Member] | Level 1 [Member] | Residential mortgage-backed securities - GSE [Member]              |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 0             | 0             |
| Recurring [Member] | Level 1 [Member] | Residential mortgage-backed securities - Private [Member]          |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 0             | 0             |
| Recurring [Member] | Level 1 [Member] | Commercial mortgage-backed securities - GSE [Member]               |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 0             | 0             |
| Recurring [Member] | Level 1 [Member] | Commercial mortgage-backed securities - Private [Member]           |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 0             | 0             |
| Recurring [Member] | Level 1 [Member] | Corporate notes [Member]                                           |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 0             | 0             |
| Recurring [Member] | Level 2 [Member]                                                                      |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 390,433       | 350,039       |
| Mortgage servicing rights                                                                                  | 0             | 0             |
| Total assets at fair value                                                                                 | 389,678       | 349,514       |
| Recurring [Member] | Level 2 [Member] | Interest Rate Swap [Member]                                        |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Mortgage servicing rights                                                                                  | (755)         | (525)         |
| Recurring [Member] | Level 2 [Member] | U.S. government sponsored agencies debt securities [Member]        |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 2,008         | 2,044         |
| Recurring [Member] | Level 2 [Member] | Residential mortgage-backed securities - GSE [Member]              |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 278,107       | 290,145       |
| Recurring [Member] | Level 2 [Member] | Residential mortgage-backed securities - Private [Member]          |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 33,577        | 17,271        |
| Recurring [Member] | Level 2 [Member] | Commercial mortgage-backed securities - GSE [Member]               |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 21,611        | 21,957        |
| Recurring [Member] | Level 2 [Member] | Commercial mortgage-backed securities - Private [Member]           |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 17,575        | 10,215        |
| Recurring [Member] | Level 2 [Member] | Corporate notes [Member]                                           |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 37,555        | 8,407         |
| Recurring [Member] | Level 3 [Member]                                                                      |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 0             | 0             |
| Mortgage servicing rights                                                                                  | 2,231         | 1,726         |
| Total assets at fair value                                                                                 | 2,231         | 1,726         |
| Recurring [Member] | Level 3 [Member] | Interest Rate Swap [Member]                                        |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Mortgage servicing rights                                                                                  | 0             | 0             |
| Recurring [Member] | Level 3 [Member] | U.S. government sponsored agencies debt securities [Member]        |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 0             | 0             |
| Recurring [Member] | Level 3 [Member] | Residential mortgage-backed securities - GSE [Member]              |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 0             | 0             |
| Recurring [Member] | Level 3 [Member] | Residential mortgage-backed securities - Private [Member]          |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 0             | 0             |
| Recurring [Member] | Level 3 [Member] | Commercial mortgage-backed securities - GSE [Member]               |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 0             | 0             |
| Recurring [Member] | Level 3 [Member] | Commercial mortgage-backed securities - Private [Member]           |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | 0             | 0             |
| Recurring [Member] | Level 3 [Member] | Corporate notes [Member]                                           |          |          |
| **Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]**                            |          |          |
| Total                                                                                                      | $ 0           | $ 0           |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=51813488&loc=d3e22054-111558Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26610-111562
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - 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.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.
+ References
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