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Investment Securities Available for Sale (Details) $ in Thousands | Sep. 30, 2018 USD ($) | Dec. 31, 2017 USD ($) | Sep. 30, 2017 USD ($)
--- | --- | --- | ---
Available-For-Sale Securities |  |  |
Available-For-Sale Securities, at Amortized Cost | $ 347,916 | $ 301,876 | $ 315,329
Available-for-Sale | 340,411 | 300,200 | 315,459
Gross Unrealized Gains | 204 | 935 | 1,497
Gross Unrealized Losses | 7,709 | 2,611 | 1,367
Maturities of Debt Securities, at Amortized Cost: |  |  |
Within One Year | 44,991 |  |
From 1 - 5 Years | 183,041 |  |
From 5 - 10 Years | 103,597 |  |
Over 10 Years | 16,287 |  |
Maturities of Debt Securities, at Fair Value: |  |  |
Within One Year | 44,781 |  |
From 1 - 5 Years | 176,760 |  |
From 5 - 10 Years | 102,800 |  |
Over 10 Years | 16,070 |  |
Securities in a Continuous Loss Position, at Fair Value: |  |  |
Less than 12 Months | 173,669 | 99,776 | 175,154
12 Months or Longer | 127,004 | 121,105 | 1,800
Total | $ 300,673 | $ 220,881 | $ 176,954
Number of Securities in a Continuous Loss Position | 110 | 106 | 57
Unrealized Losses on Securities in a Continuous Loss Position: |  |  |
Less than 12 Months | $ 3,358 | $ 546 | $ 1,166
12 Months or Longer | 4,351 | 2,065 | 201
Total | 7,709 | 2,611 | 1,367
U.S. Agency Obligations |  |  |
Available-For-Sale Securities |  |  |
Available-For-Sale Securities, at Amortized Cost | 60,135 | 60,328 | 146,976
Available-for-Sale | 59,602 | 59,894 | 146,978
Gross Unrealized Gains | 0 | 0 | 152
Gross Unrealized Losses | 533 | 434 | 150
Maturities of Debt Securities, at Amortized Cost: |  |  |
Within One Year | 42,621 |  |
From 1 - 5 Years | 17,514 |  |
From 5 - 10 Years | 0 |  |
Over 10 Years | 0 |  |
Maturities of Debt Securities, at Fair Value: |  |  |
Within One Year | 42,410 |  |
From 1 - 5 Years | 17,192 |  |
From 5 - 10 Years | 0 |  |
Over 10 Years | 0 |  |
Securities in a Continuous Loss Position, at Fair Value: |  |  |
Less than 12 Months | 4,831 | 20,348 | 89,563
12 Months or Longer | 54,771 | 39,546 | 0
Total | $ 59,602 | $ 59,894 | $ 89,563
Number of Securities in a Continuous Loss Position | 14 | 14 | 23
Unrealized Losses on Securities in a Continuous Loss Position: |  |  |
Less than 12 Months | $ 193 | $ 172 | $ 150
12 Months or Longer | 340 | 262 | 0
Total | 533 | 434 | 150
State and Municipal Obligations |  |  |
Available-For-Sale Securities |  |  |
Available-For-Sale Securities, at Amortized Cost | 2,545 | 10,351 | 11,875
Available-for-Sale | 2,548 | 10,349 | 11,902
Gross Unrealized Gains | 3 | 9 | 27
Gross Unrealized Losses | 0 | 11 | 0
Maturities of Debt Securities, at Amortized Cost: |  |  |
Within One Year | 1,346 |  |
From 1 - 5 Years | 719 |  |
From 5 - 10 Years | 0 |  |
Over 10 Years | 480 |  |
Maturities of Debt Securities, at Fair Value: |  |  |
Within One Year | 1,346 |  |
From 1 - 5 Years | 722 |  |
From 5 - 10 Years | 0 |  |
Over 10 Years | 480 |  |
Securities in a Continuous Loss Position, at Fair Value: |  |  |
Less than 12 Months | 1,120 | 8,498 | 0
12 Months or Longer | 0 | 0 | 0
Total | $ 1,120 | $ 8,498 | $ 0
Number of Securities in a Continuous Loss Position | 5 | 36 | 0
Unrealized Losses on Securities in a Continuous Loss Position: |  |  |
Less than 12 Months | $ 0 | $ 11 | $ 0
12 Months or Longer | 0 | 0 | 0
Total | 0 | 11 | 0
Mortgage-Backed Securities - Residential |  |  |
Available-For-Sale Securities |  |  |
Available-For-Sale Securities, at Amortized Cost | 284,236 | 229,077 | 152,858
Available-for-Sale | 277,461 | 227,596 | 152,806
Gross Unrealized Gains | 201 | 485 | 964
Gross Unrealized Losses | 6,976 | 1,966 | 1,016
Maturities of Debt Securities, at Amortized Cost: |  |  |
Within One Year | 1,024 |  |
From 1 - 5 Years | 164,808 |  |
From 5 - 10 Years | 103,597 |  |
Over 10 Years | 14,807 |  |
Maturities of Debt Securities, at Fair Value: |  |  |
Within One Year | 1,025 |  |
From 1 - 5 Years | 158,846 |  |
From 5 - 10 Years | 102,800 |  |
Over 10 Years | 14,790 |  |
Securities in a Continuous Loss Position, at Fair Value: |  |  |
Less than 12 Months | 167,718 | 70,930 | 85,091
12 Months or Longer | 71,433 | 80,759 | 0
Total | $ 239,151 | $ 151,689 | $ 85,091
Number of Securities in a Continuous Loss Position | 90 | 55 | 31
Unrealized Losses on Securities in a Continuous Loss Position: |  |  |
Less than 12 Months | $ 3,165 | $ 363 | $ 1,016
12 Months or Longer | 3,811 | 1,603 | 0
Total | 6,976 | 1,966 | 1,016
Corporate and Other Debt Securities |  |  |
Available-For-Sale Securities |  |  |
Available-For-Sale Securities, at Amortized Cost | 1,000 | 1,000 | 2,500
Available-for-Sale | 800 | 800 | 2,299
Gross Unrealized Gains | 0 | 0 | 0
Gross Unrealized Losses | 200 | 200 | 201
Maturities of Debt Securities, at Amortized Cost: |  |  |
Within One Year | 0 |  |
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 | 0 |  |
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 | 0 | 0 | 500
12 Months or Longer | 800 | 800 | 1,800
Total | $ 800 | $ 800 | $ 2,300
Number of Securities in a Continuous Loss Position | 1 | 1 | 3
Unrealized Losses on Securities in a Continuous Loss Position: |  |  |
Less than 12 Months | $ 0 | $ 0 | $ 0
12 Months or Longer | 200 | 200 | 201
Total | 200 | 200 | 201
Mutual Funds and Equity Securities |  |  |
Available-For-Sale Securities |  |  |
Available-For-Sale Securities, at Amortized Cost | 0 | 1,120 | 1,120
Available-for-Sale | 0 | 1,561 | 1,474
Gross Unrealized Gains | 0 | 441 | 354
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
Collateral Pledged |  |  |
Available-For-Sale Securities |  |  |
Available-For-Sale Securities, Pledged as Collateral | 219,587 | 183,052 | 206,637
US Treasury Securities | U.S. Agency Obligations |  |  |
Available-For-Sale Securities |  |  |
Available-For-Sale Securities, at Amortized Cost | 0 | 0 | 64,711
Available-for-Sale | 0 | 0 | 64,730
Agency Securities | U.S. Agency Obligations |  |  |
Available-For-Sale Securities |  |  |
Available-For-Sale Securities, at Amortized Cost | 60,135 | 60,328 | 82,265
Available-for-Sale | 59,602 | 59,894 | 82,248
US Government Agencies Debt Securities | Mortgage-Backed Securities - Residential |  |  |
Available-For-Sale Securities |  |  |
Available-For-Sale Securities, at Amortized Cost | 74,160 | 40,832 | 503
Available-for-Sale | 74,098 | 40,832 | 505
US Government-sponsored Enterprises Debt Securities | Mortgage-Backed Securities - Residential |  |  |
Available-For-Sale Securities |  |  |
Available-For-Sale Securities, at Amortized Cost | 210,076 | 188,245 | 152,355
Available-for-Sale | $ 203,363 | $ 186,764 | $ 152,301

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