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Investment Securities Available for Sale (Details) $ in Thousands | Mar. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Mar. 31, 2016 USD ($)
--- | --- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-For-Sale Securities, at Amortized Cost | $ 347,701 | $ 347,615 | $ 383,206
Available-for-Sale | 347,159 | 346,996 | 388,247
Gross Unrealized Gains | 1,519 | 1,576 | 5,263
Gross Unrealized Losses | 2,061 | 2,195 | 222
Available-For-Sale Securities, Pledged as Collateral | 295,797 | 262,852 | 328,123
Maturities of Debt Securities, at Amortized Cost: |  |  |
Within One Year | 22,122 |  |
From 1 - 5 Years | 268,795 |  |
From 5 - 10 Years | 54,104 |  |
Over 10 Years | 1,560 |  |
Maturities of Debt Securities, at Fair Value: |  |  |
Within One Year | 22,183 |  |
From 1 - 5 Years | 268,635 |  |
From 5 - 10 Years | 53,586 |  |
Over 10 Years | 1,360 |  |
Securities in a Continuous Loss Position, at Fair Value: |  |  |
Less than 12 Months | 174,194 | 210,095 | 12,369
12 Months or Longer | 800 | 10,186 | 1,797
Total | $ 174,994 | $ 220,281 | $ 14,166
Number of Securities in a Continuous Loss Position | 61 | 147 | 12
Unrealized Losses on Securities in a Continuous Loss Position: |  |  |
Less than 12 Months | $ 1,861 | $ 1,987 | $ 19
12 Months or Longer | 200 | 208 | 203
Total | 2,061 | 2,195 | 222
U.S. Agency Obligations |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-For-Sale Securities, at Amortized Cost | 147,012 | 147,110 | 155,896
Gross Unrealized Gains | 270 | 304 | 1,750
Gross Unrealized Losses | 52 | 37 | 0
Maturities of Debt Securities, at Amortized Cost: |  |  |
Within One Year | 0 |  |
From 1 - 5 Years | 147,012 |  |
From 5 - 10 Years | 0 |  |
Over 10 Years | 0 |  |
Maturities of Debt Securities, at Fair Value: |  |  |
Within One Year | 0 |  |
From 1 - 5 Years | 147,231 |  |
From 5 - 10 Years | 0 |  |
Over 10 Years | 0 |  |
Securities in a Continuous Loss Position, at Fair Value: |  |  |
Less than 12 Months | 42,937 | 70,605 | 0
12 Months or Longer | 0 | 0 | 0
Total | $ 42,937 | $ 70,605 | $ 0
Number of Securities in a Continuous Loss Position | 11 | 19 | 0
Unrealized Losses on Securities in a Continuous Loss Position: |  |  |
Less than 12 Months | $ 52 | $ 37 | $ 0
12 Months or Longer | 0 | 0 | 0
Total | 52 | 37 | 0
State and Municipal Obligations |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-For-Sale Securities, at Amortized Cost | 25,467 | 27,684 | 49,382
Gross Unrealized Gains | 40 | 24 | 161
Gross Unrealized Losses | 0 | 18 | 0
Maturities of Debt Securities, at Amortized Cost: |  |  |
Within One Year | 15,395 |  |
From 1 - 5 Years | 9,071 |  |
From 5 - 10 Years | 442 |  |
Over 10 Years | 560 |  |
Maturities of Debt Securities, at Fair Value: |  |  |
Within One Year | 15,398 |  |
From 1 - 5 Years | 9,108 |  |
From 5 - 10 Years | 441 |  |
Over 10 Years | 560 |  |
Securities in a Continuous Loss Position, at Fair Value: |  |  |
Less than 12 Months | 828 | 12,165 | 1,766
12 Months or Longer | 0 | 7,377 | 0
Total | $ 828 | $ 19,542 | $ 1,766
Number of Securities in a Continuous Loss Position | 5 | 84 | 2
Unrealized Losses on Securities in a Continuous Loss Position: |  |  |
Less than 12 Months | $ 0 | $ 13 | $ 0
12 Months or Longer | 0 | 5 | 0
Total | 0 | 18 | 0
Mortgage-Backed Securities - Residential |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-For-Sale Securities, at Amortized Cost | 170,601 | 168,189 | 164,905
Gross Unrealized Gains | 934 | 986 | 3,224
Gross Unrealized Losses | 1,806 | 1,936 | 19
Maturities of Debt Securities, at Amortized Cost: |  |  |
Within One Year | 4,226 |  |
From 1 - 5 Years | 112,712 |  |
From 5 - 10 Years | 53,662 |  |
Over 10 Years | 0 |  |
Maturities of Debt Securities, at Fair Value: |  |  |
Within One Year | 4,287 |  |
From 1 - 5 Years | 112,296 |  |
From 5 - 10 Years | 53,145 |  |
Over 10 Years | 0 |  |
Securities in a Continuous Loss Position, at Fair Value: |  |  |
Less than 12 Months | 127,931 | 126,825 | 10,603
12 Months or Longer | 0 | 0 | 0
Total | $ 127,931 | $ 126,825 | $ 10,603
Number of Securities in a Continuous Loss Position | 41 | 40 | 9
Unrealized Losses on Securities in a Continuous Loss Position: |  |  |
Less than 12 Months | $ 1,806 | $ 1,936 | $ 19
12 Months or Longer | 0 | 0 | 0
Total | 1,806 | 1,936 | 19
Corporate and Other Debt Securities |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-For-Sale Securities, at Amortized Cost | 3,501 | 3,512 | 11,903
Gross Unrealized Gains | 0 | 0 | 15
Gross Unrealized Losses | 203 | 204 | 203
Maturities of Debt Securities, at Amortized Cost: |  |  |
Within One Year | 2,501 |  |
From 1 - 5 Years | 0 |  |
From 5 - 10 Years | 0 |  |
Over 10 Years | 1,000 |  |
Maturities of Debt Securities, at Fair Value: |  |  |
Within One Year | 2,498 |  |
From 1 - 5 Years | 0 |  |
From 5 - 10 Years | 0 |  |
Over 10 Years | 800 |  |
Securities in a Continuous Loss Position, at Fair Value: |  |  |
Less than 12 Months | 2,498 | 500 | 0
12 Months or Longer | 800 | 2,809 | 1,797
Total | $ 3,298 | $ 3,309 | $ 1,797
Number of Securities in a Continuous Loss Position | 4 | 4 | 1
Unrealized Losses on Securities in a Continuous Loss Position: |  |  |
Less than 12 Months | $ 3 | $ 1 | $ 0
12 Months or Longer | 200 | 203 | 203
Total | 203 | 204 | 203
Mutual Funds and Equity Securities |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-For-Sale Securities, at Amortized Cost | 1,120 | 1,120 | 1,120
Gross Unrealized Gains | 275 | 262 | 113
Gross Unrealized Losses | 0 | 0 | 0
Securities in a Continuous Loss Position, at Fair Value: |  |  |
Less than 12 Months | 0 | 0 | 0
12 Months or Longer | 0 | 0 | 0
Total | $ 0 | $ 0 | $ 0
Number of Securities in a Continuous Loss Position | 0 | 0 | 0
Unrealized Losses on Securities in a Continuous Loss Position: |  |  |
Less than 12 Months | $ 0 | $ 0 | $ 0
12 Months or Longer | 0 | 0 | 0
Total | 0 | 0 | 0
Fair Value, Measurements, Recurring |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-Sale | 347,159 | 346,996 | 388,247
Fair Value, Measurements, Recurring | U.S. Agency Obligations |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-Sale | 147,231 | 147,377 | 157,646
Fair Value, Measurements, Recurring | State and Municipal Obligations |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-Sale | 25,507 | 27,690 | 49,543
Fair Value, Measurements, Recurring | Mortgage-Backed Securities - Residential |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-Sale | 169,728 | 167,239 | 168,110
Fair Value, Measurements, Recurring | Corporate and Other Debt Securities |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-Sale | 3,298 | 3,308 | 11,715
Fair Value, Measurements, Recurring | Mutual Funds and Equity Securities |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-Sale | 1,395 | 1,382 | 1,233
US Treasury Securities | U.S. Agency Obligations |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-For-Sale Securities, at Amortized Cost | 54,649 | 54,701 |
Available-for-Sale | 54,695 | 54,706 |
Agency Securities | U.S. Agency Obligations |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-For-Sale Securities, at Amortized Cost | 92,363 | 92,409 | 155,896
Available-for-Sale | 92,536 | 92,671 | 157,646
Agency Securities | Mortgage-Backed Securities - Residential |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-For-Sale Securities, at Amortized Cost | 1,616 | 3,694 | 13,148
Available-for-Sale | 1,625 | 3,724 | 13,274
US Government-sponsored Enterprises Debt Securities | Mortgage-Backed Securities - Residential |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-Sale | 168,103 | 163,515 | 154,836
US Government-sponsored Enterprises Debt Securities | Mortgage-Backed Securities - Residential | US Government-sponsored Enterprises Debt Securities |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-For-Sale Securities, at Amortized Cost | $ 168,985 | $ 164,495 | $ 151,757

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