Securities (Details) - USD ($)
$ in Thousands |
Sep. 30, 2016 |
Dec. 31, 2015 |
| Amortized cost and fair value of investments classified as available for sale |
|
|
| Amortized Cost |
$ 842,700
|
$ 876,796
|
| Unrealized Gains |
(26,658)
|
(21,005)
|
| Unrealized Losses |
(2,657)
|
(6,719)
|
| Securities available-for-sale |
866,701
|
891,082
|
| US Government Agencies Debt Securities [Member] |
|
|
| Amortized cost and fair value of investments classified as available for sale |
|
|
| Amortized Cost |
14,113
|
10,670
|
| Unrealized Gains |
(286)
|
(46)
|
| Unrealized Losses |
0
|
(23)
|
| Securities available-for-sale |
14,399
|
10,693
|
| Mortgage Backed Securities - Residential |
|
|
| Amortized cost and fair value of investments classified as available for sale |
|
|
| Amortized Cost |
225,952
|
208,705
|
| Unrealized Gains |
(7,465)
|
(5,089)
|
| Unrealized Losses |
(12)
|
(630)
|
| Securities available-for-sale |
233,405
|
213,164
|
| Mortgage Backed Securities - Commercial |
|
|
| Amortized cost and fair value of investments classified as available for sale |
|
|
| Amortized Cost |
5
|
9
|
| Unrealized Gains |
0
|
0
|
| Unrealized Losses |
0
|
0
|
| Securities available-for-sale |
5
|
9
|
| Collateralized Mortgage Obligations |
|
|
| Amortized cost and fair value of investments classified as available for sale |
|
|
| Amortized Cost |
378,404
|
441,500
|
| Unrealized Gains |
(5,152)
|
(2,141)
|
| Unrealized Losses |
(694)
|
(6,007)
|
| Securities available-for-sale |
382,862
|
437,634
|
| State and Municipal Obligations |
|
|
| Amortized cost and fair value of investments classified as available for sale |
|
|
| Amortized Cost |
214,927
|
206,291
|
| Unrealized Gains |
(9,663)
|
(8,475)
|
| Unrealized Losses |
(71)
|
(59)
|
| Securities available-for-sale |
224,519
|
214,707
|
| Collateralized Debt Obligations |
|
|
| Amortized cost and fair value of investments classified as available for sale |
|
|
| Amortized Cost |
9,299
|
9,621
|
| Unrealized Gains |
(4,092)
|
(5,254)
|
| Unrealized Losses |
(1,880)
|
0
|
| Securities available-for-sale |
$ 11,511
|
$ 14,875
|