Investment Securities (Details 2) - USD ($)
$ in Thousands |
Mar. 31, 2016 |
Dec. 31, 2015 |
| Fair Value |
|
|
| Less than 12 Months |
$ 78,585
|
$ 257,218
|
| 12 months or Longer |
23,802
|
67,762
|
| Total fair value |
102,387
|
324,980
|
| Unrealized Losses |
|
|
| Less than 12 Months |
(524)
|
(2,060)
|
| 12 months or Longer |
(405)
|
(1,400)
|
| Total unrealized losses |
(929)
|
(3,460)
|
| Investment securities pledged as collateral |
284,110
|
233,140
|
| U.S. Treasury and Federal agencies securities |
|
|
| Fair Value |
|
|
| Less than 12 Months |
36,933
|
151,581
|
| 12 months or Longer |
0
|
43,372
|
| Total fair value |
36,933
|
194,953
|
| Unrealized Losses |
|
|
| Less than 12 Months |
(42)
|
(928)
|
| 12 months or Longer |
0
|
(578)
|
| Total unrealized losses |
(42)
|
(1,506)
|
| U.S. States and political subdivisions securities |
|
|
| Fair Value |
|
|
| Less than 12 Months |
12,169
|
17,040
|
| 12 months or Longer |
4,332
|
3,795
|
| Total fair value |
16,501
|
20,835
|
| Unrealized Losses |
|
|
| Less than 12 Months |
(73)
|
(79)
|
| 12 months or Longer |
(50)
|
(64)
|
| Total unrealized losses |
(123)
|
(143)
|
| Mortgage-backed securities - Federal agencies |
|
|
| Fair Value |
|
|
| Less than 12 Months |
27,283
|
78,731
|
| 12 months or Longer |
19,467
|
20,592
|
| Total fair value |
46,750
|
99,323
|
| Unrealized Losses |
|
|
| Less than 12 Months |
(111)
|
(777)
|
| 12 months or Longer |
(353)
|
(756)
|
| Total unrealized losses |
(464)
|
(1,533)
|
| Corporate debt securities |
|
|
| Fair Value |
|
|
| Less than 12 Months |
1,753
|
9,340
|
| 12 months or Longer |
0
|
0
|
| Total fair value |
1,753
|
9,340
|
| Unrealized Losses |
|
|
| Less than 12 Months |
(1)
|
(57)
|
| 12 months or Longer |
0
|
0
|
| Total unrealized losses |
(1)
|
(57)
|
| Foreign government and other securities |
|
|
| Fair Value |
|
|
| Less than 12 Months |
100
|
99
|
| 12 months or Longer |
0
|
0
|
| Total fair value |
100
|
99
|
| Unrealized Losses |
|
|
| Less than 12 Months |
0
|
(1)
|
| 12 months or Longer |
0
|
0
|
| Total unrealized losses |
0
|
(1)
|
| Total debt securities |
|
|
| Fair Value |
|
|
| Less than 12 Months |
78,238
|
256,791
|
| 12 months or Longer |
23,799
|
67,759
|
| Total fair value |
102,037
|
324,550
|
| Unrealized Losses |
|
|
| Less than 12 Months |
(227)
|
(1,842)
|
| 12 months or Longer |
(403)
|
(1,398)
|
| Total unrealized losses |
(630)
|
(3,240)
|
| Marketable equity securities |
|
|
| Fair Value |
|
|
| Less than 12 Months |
347
|
427
|
| 12 months or Longer |
3
|
3
|
| Total fair value |
350
|
430
|
| Unrealized Losses |
|
|
| Less than 12 Months |
(297)
|
(218)
|
| 12 months or Longer |
(2)
|
(2)
|
| Total unrealized losses |
$ (299)
|
$ (220)
|