| **Investment Securities (Unrealized Gain/Loss Positions) (Details) - USD ($) $ in Thousands** | Dec. 31, 2015 | Dec. 31, 2014 |
|-----------------------------------------------------------------------------------------------|---------------|---------------|
| **Available-for-sale Securities [Abstract]**                                                  |          |          |
| Amortized Cost                                                                                | $ 398,815     | $ 354,924     |
| Gross Unrealized Gains                                                                        | 920           | 1,282         |
| Gross Unrealized Losses                                                                       | 9,301         | 6,166         |
| Estimated Fair Value                                                                          | 390,434       | 350,040       |
| **Held-to-maturity Securities [Abstract]**                                                    |          |          |
| Amortized Cost                                                                                | 147,967       | 142,461       |
| Gross Unrealized Gains                                                                        | 0             | 116           |
| Gross Unrealized Losses                                                                       | 2,782         | 1,702         |
| Estimated Fair Value                                                                          | 145,185       | 140,875       |
| Amortized Cost, Total                                                                         | 546,782       | 497,385       |
| Gross Unrealized Gains, Total                                                                 | 920           | 1,398         |
| Gross Unrealized Losses, Total                                                                | 12,083        | 7,868         |
| Estimated Fair Value, Total                                                                   | 535,619       | 490,915       |
| Obligations of U.S. government sponsored enterprises [Member]                                 |          |          |
| **Available-for-sale Securities [Abstract]**                                                  |          |          |
| Amortized Cost                                                                                | 2,005         | 2,028         |
| Gross Unrealized Gains                                                                        | 3             | 16            |
| Gross Unrealized Losses                                                                       | 0             | 0             |
| Estimated Fair Value                                                                          | 2,008         | 2,044         |
| Residential mortgage-backed securities - GSE [Member]                                         |          |          |
| **Available-for-sale Securities [Abstract]**                                                  |          |          |
| Amortized Cost                                                                                | 286,057       | 295,300       |
| Gross Unrealized Gains                                                                        | 339           | 438           |
| Gross Unrealized Losses                                                                       | 8,289         | 5,593         |
| Estimated Fair Value                                                                          | 278,107       | 290,145       |
| **Held-to-maturity Securities [Abstract]**                                                    |          |          |
| Amortized Cost                                                                                | 120,197       | 132,396       |
| Gross Unrealized Gains                                                                        | 0             | 116           |
| Gross Unrealized Losses                                                                       | 2,310         | 1,635         |
| Estimated Fair Value                                                                          | 117,887       | 130,877       |
| Residential mortgage-backed securities - Private [Member]                                     |          |          |
| **Available-for-sale Securities [Abstract]**                                                  |          |          |
| Amortized Cost                                                                                | 33,235        | 16,455        |
| Gross Unrealized Gains                                                                        | 578           | 820           |
| Gross Unrealized Losses                                                                       | 236           | 4             |
| Estimated Fair Value                                                                          | 33,577        | 17,271        |
| **Held-to-maturity Securities [Abstract]**                                                    |          |          |
| Amortized Cost                                                                                | 17,712        |          |
| Gross Unrealized Gains                                                                        | 0             |          |
| Gross Unrealized Losses                                                                       | 298           |          |
| Estimated Fair Value                                                                          | 17,414        |          |
| Commercial mortgage-backed securities - GSE [Member]                                          |          |          |
| **Available-for-sale Securities [Abstract]**                                                  |          |          |
| Amortized Cost                                                                                | 21,980        | 22,377        |
| Gross Unrealized Gains                                                                        | 0             | 0             |
| Gross Unrealized Losses                                                                       | 368           | 419           |
| Estimated Fair Value                                                                          | 21,612        | 21,958        |
| Commercial mortgage-backed securities - Private [Member]                                      |          |          |
| **Available-for-sale Securities [Abstract]**                                                  |          |          |
| Amortized Cost                                                                                | 17,869        | 10,365        |
| Gross Unrealized Gains                                                                        | 0             | 0             |
| Gross Unrealized Losses                                                                       | 294           | 150           |
| Estimated Fair Value                                                                          | 17,575        | 10,215        |
| **Held-to-maturity Securities [Abstract]**                                                    |          |          |
| Amortized Cost                                                                                | 10,058        | 10,065        |
| Gross Unrealized Gains                                                                        | 0             | 0             |
| Gross Unrealized Losses                                                                       | 174           | 67            |
| Estimated Fair Value                                                                          | 9,884         | 9,998         |
| Corporate notes [Member]                                                                      |          |          |
| **Available-for-sale Securities [Abstract]**                                                  |          |          |
| Amortized Cost                                                                                | 37,669        | 8,399         |
| Gross Unrealized Gains                                                                        | 0             | 8             |
| Gross Unrealized Losses                                                                       | 114           | 0             |
| Estimated Fair Value                                                                          | $ 37,555      | $ 8,407       |

| X                                                                                                                                                                                                                                                                                                                         |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Available-for-sale and Held-to-maturity Securities, Amortized Cost Basis
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No definition available.
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| - Definition
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No definition available.
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No definition available.
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                             |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of debt and equity financial instruments classified as either held-to-maturity or available-for-sale.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of accumulated unrealized gain on investments in debt securities classified as held-to-maturity.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of accumulated unrealized loss on investments in debt securities classified as held-to-maturity.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                    |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount before other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Fair value of investments in debt securities classified as held-to-maturity.
+ References
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| X                                                                                                                                                                                                                      |
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| - References
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| X                                                                                                                                                                                                               |
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