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Investment Securities Available for Sale (Details) $ in Thousands | Jun. 30, 2015 USD ($) | Dec. 31, 2014 USD ($) | Jun. 30, 2014 USD ($) | Mar. 31, 2014 USD ($)
--- | --- | --- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Available-For-Sale Securities, at Amortized Cost | $ 388,009 | $ 361,962 |  | $ 361,641
Available-for-Sale | 391,817 | 366,139 | $ 366,848 | 366,848
Gross Unrealized Gains | 4,385 | 4,636 |  | 5,656
Gross Unrealized Losses | 576 | 459 |  | 449
Available-For-Sale Securities, Pledged as Collateral | 289,418 | 267,384 |  | 228,990
Maturities of Debt Securities, at Amortized Cost |  |  |  |
Within One Year | 25,142 |  |  |
From 1 - 5 Years | 330,946 |  |  |
From 5 - 10 Years | 29,116 |  |  |
Over 10 Years | 1,684 |  |  |
Maturities of Debt Securities at Fair Value |  |  |  |
Within One Year | 25,481 |  |  |
From 1 - 5 Years | 333,920 |  |  |
From 5 - 10 Years | 29,681 |  |  |
Over 10 Years | 1,490 |  |  |
Securities in a Continuous Loss Position, at Fair Value |  |  |  |
Less than 12 Months | 0 | 43,022 |  | 54,488
12 Months or Longer | 109,641 | 54,339 |  | 47,726
Total | $ 109,641 | $ 97,361 |  | $ 102,214
Number of Securities in a Continuous Loss Position, in number of securities | 96 | 105 |  | 68
Unrealized Losses on Securities in a Continuous Loss Position |  |  |  |
Less than 12 Months | $ 0 | $ 48 |  | $ 64
12 Months or Longer | 576 | 411 |  | 385
Total | 576 | 459 |  | 449
U.S. Agency Obligations [Member] |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Gross Unrealized Gains | 788 | 208 |  | 4
Gross Unrealized Losses | 99 | 145 |  | 146
Maturities of Debt Securities, at Amortized Cost |  |  |  |
Within One Year | 0 |  |  |
From 1 - 5 Years | 156,248 |  |  |
From 5 - 10 Years | 0 |  |  |
Over 10 Years | 0 |  |  |
Maturities of Debt Securities at Fair Value |  |  |  |
Within One Year | 0 |  |  |
From 1 - 5 Years | 156,937 |  |  |
From 5 - 10 Years | 0 |  |  |
Over 10 Years | 0 |  |  |
Securities in a Continuous Loss Position, at Fair Value |  |  |  |
Less than 12 Months | 0 | 39,631 |  | 42,888
12 Months or Longer | 35,149 | 28,020 |  | 33,031
Total | $ 35,149 | $ 67,651 |  | $ 75,919
Number of Securities in a Continuous Loss Position, in number of securities | 10 | 22 |  | 24
Unrealized Losses on Securities in a Continuous Loss Position |  |  |  |
Less than 12 Months | $ 0 | $ 48 |  | $ 30
12 Months or Longer | 99 | 97 |  | 116
Total | 99 | 145 |  | 146
U.S. Agency Obligations [Member] | U.S. Government Agency Obligations [Member] |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Available-For-Sale Securities, at Amortized Cost | 156,248 | 137,540 |  | 92,328
Available-for-Sale | 156,937 | 137,603 |  | 92,186
State and Municipal Obligations [Member] |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Available-For-Sale Securities, at Amortized Cost | 59,230 | 81,582 |  | 102,456
Available-for-Sale | 59,303 | 81,730 |  | 102,862
Gross Unrealized Gains | 117 | 187 |  | 413
Gross Unrealized Losses | 43 | 39 |  | 7
Maturities of Debt Securities, at Amortized Cost |  |  |  |
Within One Year | 9,179 |  |  |
From 1 - 5 Years | 48,283 |  |  |
From 5 - 10 Years | 1,168 |  |  |
Over 10 Years | 600 |  |  |
Maturities of Debt Securities at Fair Value |  |  |  |
Within One Year | 9,194 |  |  |
From 1 - 5 Years | 48,341 |  |  |
From 5 - 10 Years | 1,168 |  |  |
Over 10 Years | 600 |  |  |
Securities in a Continuous Loss Position, at Fair Value |  |  |  |
Less than 12 Months | 0 | 3,309 |  | 2,860
12 Months or Longer | 16,401 | 14,035 |  | 4,223
Total | $ 16,401 | $ 17,344 |  | $ 7,083
Number of Securities in a Continuous Loss Position, in number of securities | 71 | 65 |  | 24
Unrealized Losses on Securities in a Continuous Loss Position |  |  |  |
Less than 12 Months | $ 0 | $ 0 |  | $ 0
12 Months or Longer | 43 | 39 |  | 7
Total | 43 | 39 |  | 7
Mortgage-Backed Securities - Residential [Member] |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Available-For-Sale Securities, at Amortized Cost | 154,501 | 124,732 |  | 148,672
Available-for-Sale | 157,641 | 128,827 |  | 153,770
Gross Unrealized Gains | 3,350 | 4,100 |  | 5,143
Gross Unrealized Losses | 210 | 5 |  | 45
Maturities of Debt Securities, at Amortized Cost |  |  |  |
Within One Year | 11,037 |  |  |
From 1 - 5 Years | 115,431 |  |  |
From 5 - 10 Years | 27,948 |  |  |
Over 10 Years | 84 |  |  |
Maturities of Debt Securities at Fair Value |  |  |  |
Within One Year | 11,357 |  |  |
From 1 - 5 Years | 117,681 |  |  |
From 5 - 10 Years | 28,513 |  |  |
Over 10 Years | 90 |  |  |
Securities in a Continuous Loss Position, at Fair Value |  |  |  |
Less than 12 Months | 0 | 82 |  | 8,740
12 Months or Longer | 47,859 | 1,546 |  | 1,935
Total | $ 47,859 | $ 1,628 |  | $ 10,675
Number of Securities in a Continuous Loss Position, in number of securities | 1 | 3 |  | 8
Unrealized Losses on Securities in a Continuous Loss Position |  |  |  |
Less than 12 Months | $ 0 | $ 0 |  | $ 34
12 Months or Longer | 210 | 5 |  | 11
Total | 210 | 5 |  | 45
Mortgage-Backed Securities - Residential [Member] | U.S. Government Agency Obligations [Member] |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Available-For-Sale Securities, at Amortized Cost | 30,800 | 23,000 |  | 29,400
Available-for-Sale | 31,700 | 23,600 |  | 30,100
Mortgage-Backed Securities - Residential [Member] | US Government-sponsored Enterprises Debt Securities [Member] |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Available-For-Sale Securities, at Amortized Cost | 123,700 | 101,700 |  | 119,300
Available-for-Sale | 126,000 | 105,200 |  | 123,700
Corporate and Other Debt Securities [Member] |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Available-For-Sale Securities, at Amortized Cost | 16,910 | 16,988 |  | 17,065
Available-for-Sale | 16,691 | 16,725 |  | 16,829
Gross Unrealized Gains | 5 | 7 |  | 15
Gross Unrealized Losses | 224 | 270 |  | 251
Maturities of Debt Securities, at Amortized Cost |  |  |  |
Within One Year | 4,926 |  |  |
From 1 - 5 Years | 10,984 |  |  |
From 5 - 10 Years | 0 |  |  |
Over 10 Years | 1,000 |  |  |
Maturities of Debt Securities at Fair Value |  |  |  |
Within One Year | 4,930 |  |  |
From 1 - 5 Years | 10,961 |  |  |
From 5 - 10 Years | 0 |  |  |
Over 10 Years | 800 |  |  |
Securities in a Continuous Loss Position, at Fair Value |  |  |  |
Less than 12 Months | 0 | 0 |  | 0
12 Months or Longer | 10,232 | 10,738 |  | 8,537
Total | $ 10,232 | $ 10,738 |  | $ 8,537
Number of Securities in a Continuous Loss Position, in number of securities | 14 | 15 |  | 12
Unrealized Losses on Securities in a Continuous Loss Position |  |  |  |
Less than 12 Months | $ 0 | $ 0 |  | $ 0
12 Months or Longer | 224 | 270 |  | 251
Total | 224 | 270 |  | 251
Mutual Funds and Equity Securities [Member] |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Available-For-Sale Securities, at Amortized Cost | 1,120 | 1,120 |  | 1,120
Available-for-Sale | 1,245 | 1,254 |  | 1,201
Gross Unrealized Gains | 125 | 134 |  | 81
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, in number of securities | 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

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