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Investment Securities Available for Sale (Details) $ in Thousands | Jun. 30, 2017 USD ($) | Dec. 31, 2016 USD ($) | Jun. 30, 2016 USD ($)
--- | --- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-For-Sale Securities, at Amortized Cost | $ 327,268 | $ 347,615 | $ 356,910
Available-for-Sale | 327,392 | 346,996 | 362,929
Gross Unrealized Gains | 1,617 | 1,576 | 6,223
Gross Unrealized Losses | 1,493 | 2,195 | 204
Available-For-Sale Securities, Pledged as Collateral | 267,912 | 262,852 | 267,912
Maturities of Debt Securities, at Amortized Cost: |  |  |
Within One Year | 10,824 |  |
From 1 - 5 Years | 261,543 |  |
From 5 - 10 Years | 52,261 |  |
Over 10 Years | 1,520 |  |
Maturities of Debt Securities, at Fair Value: |  |  |
Within One Year | 10,875 |  |
From 1 - 5 Years | 261,719 |  |
From 5 - 10 Years | 51,988 |  |
Over 10 Years | 1,320 |  |
Securities in a Continuous Loss Position, at Fair Value: |  |  |
Less than 12 Months | 149,088 | 210,095 | 710
12 Months or Longer | 800 | 10,186 | 2,537
Total | $ 149,888 | $ 220,281 | $ 3,247
Number of Securities in a Continuous Loss Position | 52 | 147 | 6
Unrealized Losses on Securities in a Continuous Loss Position: |  |  |
Less than 12 Months | $ 1,293 | $ 1,987 | $ 4
12 Months or Longer | 200 | 208 | 200
Total | 1,493 | 2,195 | 204
U.S. Agency Obligations |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-For-Sale Securities, at Amortized Cost | 146,914 | 147,110 | 155,859
Available-for-Sale | 147,085 | 147,377 | 157,990
Gross Unrealized Gains | 252 | 304 | 2,131
Gross Unrealized Losses | 81 | 37 | 0
Maturities of Debt Securities, at Amortized Cost: |  |  |
Within One Year | 0 |  |
From 1 - 5 Years | 146,914 |  |
From 5 - 10 Years | 0 |  |
Over 10 Years | 0 |  |
Maturities of Debt Securities, at Fair Value: |  |  |
Within One Year | 0 |  |
From 1 - 5 Years | 147,085 |  |
From 5 - 10 Years | 0 |  |
Over 10 Years | 0 |  |
Securities in a Continuous Loss Position, at Fair Value: |  |  |
Less than 12 Months | 49,176 | 70,605 | 0
12 Months or Longer | 0 | 0 | 0
Total | $ 49,176 | $ 70,605 | $ 0
Number of Securities in a Continuous Loss Position | 13 | 19 | 0
Unrealized Losses on Securities in a Continuous Loss Position: |  |  |
Less than 12 Months | $ 81 | $ 37 | $ 0
12 Months or Longer | 0 | 0 | 0
Total | 81 | 37 | 0
State and Municipal Obligations |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-For-Sale Securities, at Amortized Cost | 15,410 | 27,684 | 36,256
Available-for-Sale | 15,441 | 27,690 | 36,425
Gross Unrealized Gains | 31 | 24 | 169
Gross Unrealized Losses | 0 | 18 | 0
Maturities of Debt Securities, at Amortized Cost: |  |  |
Within One Year | 5,482 |  |
From 1 - 5 Years | 8,966 |  |
From 5 - 10 Years | 442 |  |
Over 10 Years | 520 |  |
Maturities of Debt Securities, at Fair Value: |  |  |
Within One Year | 5,483 |  |
From 1 - 5 Years | 8,996 |  |
From 5 - 10 Years | 442 |  |
Over 10 Years | 520 |  |
Securities in a Continuous Loss Position, at Fair Value: |  |  |
Less than 12 Months | 543 | 12,165 | 0
12 Months or Longer | 0 | 7,377 | 256
Total | $ 543 | $ 19,542 | $ 256
Number of Securities in a Continuous Loss Position | 2 | 84 | 1
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 | 161,324 | 168,189 | 157,926
Available-for-Sale | 161,077 | 167,239 | 161,728
Gross Unrealized Gains | 964 | 986 | 3,806
Gross Unrealized Losses | 1,211 | 1,936 | 4
Maturities of Debt Securities, at Amortized Cost: |  |  |
Within One Year | 3,842 |  |
From 1 - 5 Years | 105,663 |  |
From 5 - 10 Years | 51,819 |  |
Over 10 Years | 0 |  |
Maturities of Debt Securities, at Fair Value: |  |  |
Within One Year | 3,893 |  |
From 1 - 5 Years | 105,638 |  |
From 5 - 10 Years | 51,546 |  |
Over 10 Years | 0 |  |
Securities in a Continuous Loss Position, at Fair Value: |  |  |
Less than 12 Months | 97,870 | 126,825 | 710
12 Months or Longer | 0 | 0 | 0
Total | $ 97,870 | $ 126,825 | $ 710
Number of Securities in a Continuous Loss Position | 34 | 40 | 2
Unrealized Losses on Securities in a Continuous Loss Position: |  |  |
Less than 12 Months | $ 1,211 | $ 1,936 | $ 4
12 Months or Longer | 0 | 0 | 0
Total | 1,211 | 1,936 | 4
Corporate and Other Debt Securities |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-For-Sale Securities, at Amortized Cost | 2,500 | 3,512 | 5,749
Available-for-Sale | 2,299 | 3,308 | 5,555
Gross Unrealized Gains | 0 | 0 | 6
Gross Unrealized Losses | 201 | 204 | 200
Maturities of Debt Securities, at Amortized Cost: |  |  |
Within One Year | 1,500 |  |
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 | 1,499 |  |
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 | 1,499 | 500 | 0
12 Months or Longer | 800 | 2,809 | 2,281
Total | $ 2,299 | $ 3,309 | $ 2,281
Number of Securities in a Continuous Loss Position | 3 | 4 | 3
Unrealized Losses on Securities in a Continuous Loss Position: |  |  |
Less than 12 Months | $ 1 | $ 1 | $ 0
12 Months or Longer | 200 | 203 | 200
Total | 201 | 204 | 200
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
Available-for-Sale | 1,490 | 1,382 | 1,231
Gross Unrealized Gains | 370 | 262 | 111
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 | 327,392 | 346,996 | 362,929
Fair Value, Measurements, Recurring | U.S. Agency Obligations |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-Sale | 147,085 | 147,377 | 157,990
Fair Value, Measurements, Recurring | State and Municipal Obligations |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-Sale | 15,441 | 27,690 | 36,425
Fair Value, Measurements, Recurring | Corporate and Other Debt Securities |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-Sale | 2,299 | 3,308 | 5,555
Fair Value, Measurements, Recurring | Mutual Funds and Equity Securities |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-For-Sale Securities, at Amortized Cost | 1,490 |  |
Available-for-Sale |  | 1,382 | 1,231
US Treasury Securities | U.S. Agency Obligations |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-For-Sale Securities, at Amortized Cost | 54,597 | 54,701 |
Available-for-Sale | 54,676 | 54,706 |
Agency Securities | U.S. Agency Obligations |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-For-Sale Securities, at Amortized Cost | 92,317 | 92,409 | 155,859
Available-for-Sale | 92,409 | 92,671 | 157,990
Agency Securities | Mortgage-Backed Securities - Residential |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-For-Sale Securities, at Amortized Cost | 3,740 | 3,694 | 10,318
Available-for-Sale | 3,756 | 3,724 | 10,401
US Government-sponsored Enterprises Debt Securities | Mortgage-Backed Securities - Residential |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-Sale | 157,321 | 163,515 | 151,327
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 | $ 157,584 | $ 164,495 | $ 147,608

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