Investments (Gross Unrealized Losses and Fair Values of Securities) (Details) - USD ($)
$ in Thousands |
Sep. 30, 2016 |
Dec. 31, 2015 |
| Schedule of Investments [Line Items] |
|
|
| Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value |
$ 50,412
|
$ 66,623
|
| Available-for-sale securities, continuous unrealized loss position, less than 12 months, unrealized losses |
1,238
|
552
|
| Available-for-sale securities, continuous unrealized loss position, twelve months or longer, fair value |
10,797
|
19,787
|
| Available-for-sale securities, continuous unrealized loss position, 12 months or longer, unrealized losses |
3,702
|
3,894
|
| Held-to-maturity securities, continuous unrealized loss position, less than twelve months, fair value |
3,858
|
26,900
|
| Held-to-maturity securities, continuous unrealized loss position, less than 12 months, unrealized loss |
18
|
237
|
| Held-to-maturity securities, continuous unrealized loss position, twelve months or longer, fair value |
448
|
0
|
| Held-to-maturity securities, continuous unrealized loss position, 12 months or longer, unrealized loss |
1
|
0
|
| US government agencies [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value |
9,997
|
23,929
|
| Available-for-sale securities, continuous unrealized loss position, less than 12 months, unrealized losses |
3
|
129
|
| Available-for-sale securities, continuous unrealized loss position, twelve months or longer, fair value |
0
|
0
|
| Available-for-sale securities, continuous unrealized loss position, 12 months or longer, unrealized losses |
0
|
0
|
| Residential mortgage-backed agencies [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value |
|
0
|
| Available-for-sale securities, continuous unrealized loss position, less than 12 months, unrealized losses |
|
0
|
| Available-for-sale securities, continuous unrealized loss position, twelve months or longer, fair value |
|
8,051
|
| Available-for-sale securities, continuous unrealized loss position, 12 months or longer, unrealized losses |
|
220
|
| Held-to-maturity securities, continuous unrealized loss position, less than twelve months, fair value |
3,858
|
11,085
|
| Held-to-maturity securities, continuous unrealized loss position, less than 12 months, unrealized loss |
18
|
98
|
| Held-to-maturity securities, continuous unrealized loss position, twelve months or longer, fair value |
448
|
0
|
| Held-to-maturity securities, continuous unrealized loss position, 12 months or longer, unrealized loss |
1
|
0
|
| Commercial mortgage-backed agencies [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value |
12,683
|
25,858
|
| Available-for-sale securities, continuous unrealized loss position, less than 12 months, unrealized losses |
31
|
196
|
| Available-for-sale securities, continuous unrealized loss position, twelve months or longer, fair value |
0
|
0
|
| Available-for-sale securities, continuous unrealized loss position, 12 months or longer, unrealized losses |
0
|
0
|
| Held-to-maturity securities, continuous unrealized loss position, less than twelve months, fair value |
|
9,518
|
| Held-to-maturity securities, continuous unrealized loss position, less than 12 months, unrealized loss |
|
17
|
| Held-to-maturity securities, continuous unrealized loss position, twelve months or longer, fair value |
|
0
|
| Held-to-maturity securities, continuous unrealized loss position, 12 months or longer, unrealized loss |
|
0
|
| Collateralized mortgage obligations [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value |
15,104
|
5,299
|
| Available-for-sale securities, continuous unrealized loss position, less than 12 months, unrealized losses |
63
|
123
|
| Available-for-sale securities, continuous unrealized loss position, twelve months or longer, fair value |
0
|
0
|
| Available-for-sale securities, continuous unrealized loss position, 12 months or longer, unrealized losses |
0
|
0
|
| Held-to-maturity securities, continuous unrealized loss position, less than twelve months, fair value |
|
6,297
|
| Held-to-maturity securities, continuous unrealized loss position, less than 12 months, unrealized loss |
|
122
|
| Held-to-maturity securities, continuous unrealized loss position, twelve months or longer, fair value |
|
0
|
| Held-to-maturity securities, continuous unrealized loss position, 12 months or longer, unrealized loss |
|
0
|
| Obligations of states and political subdivisions [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value |
267
|
11,537
|
| Available-for-sale securities, continuous unrealized loss position, less than 12 months, unrealized losses |
1
|
104
|
| Available-for-sale securities, continuous unrealized loss position, twelve months or longer, fair value |
3,231
|
4,048
|
| Available-for-sale securities, continuous unrealized loss position, 12 months or longer, unrealized losses |
48
|
119
|
| Collateralized debt obligations [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Available-for-sale securities, continuous unrealized loss position, less than twelve months, fair value |
12,361
|
0
|
| Available-for-sale securities, continuous unrealized loss position, less than 12 months, unrealized losses |
1,140
|
0
|
| Available-for-sale securities, continuous unrealized loss position, twelve months or longer, fair value |
7,566
|
7,688
|
| Available-for-sale securities, continuous unrealized loss position, 12 months or longer, unrealized losses |
$ 3,654
|
$ 3,555
|