Investments (Unrealized Gain (Loss) on Investments) (Details) - USD ($)
$ in Thousands |
Sep. 30, 2017 |
Dec. 31, 2016 |
| Schedule of Investments [Line Items] |
|
|
| Amortized Cost |
$ 155,419
|
$ 149,561
|
| Gross Unrealized Gains |
422
|
269
|
| Gross Unrealized Losses |
6,681
|
9,830
|
| Investment securities - available-for-sale (at fair value) |
149,160
|
140,000
|
| OTTI in AOCI |
(3,556)
|
(3,961)
|
| Held-to-maturity amortized cost |
95,975
|
97,169
|
| Held-to-maturity Gross Unrealized Gains |
2,559
|
1,410
|
| Held-to-maturity gross unrealized losses |
351
|
598
|
| Investment securities - HTM |
98,183
|
97,981
|
| Held-to-maturity OTTI in AOCI |
0
|
0
|
| US government agencies [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Amortized Cost |
30,000
|
25,000
|
| Gross Unrealized Gains |
0
|
0
|
| Gross Unrealized Losses |
521
|
747
|
| Investment securities - available-for-sale (at fair value) |
29,479
|
24,253
|
| OTTI in AOCI |
0
|
0
|
| Held-to-maturity amortized cost |
15,841
|
15,738
|
| Held-to-maturity Gross Unrealized Gains |
609
|
512
|
| Held-to-maturity gross unrealized losses |
0
|
0
|
| Investment securities - HTM |
16,450
|
16,250
|
| Held-to-maturity OTTI in AOCI |
0
|
0
|
| Residential mortgage-backed agencies [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Held-to-maturity amortized cost |
50,019
|
50,384
|
| Held-to-maturity Gross Unrealized Gains |
239
|
160
|
| Held-to-maturity gross unrealized losses |
301
|
279
|
| Investment securities - HTM |
49,957
|
50,265
|
| Held-to-maturity OTTI in AOCI |
0
|
0
|
| Commercial mortgage-backed agencies [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Amortized Cost |
42,417
|
52,978
|
| Gross Unrealized Gains |
0
|
1
|
| Gross Unrealized Losses |
594
|
757
|
| Investment securities - available-for-sale (at fair value) |
41,823
|
52,222
|
| OTTI in AOCI |
0
|
0
|
| Held-to-maturity amortized cost |
17,364
|
17,584
|
| Held-to-maturity Gross Unrealized Gains |
385
|
248
|
| Held-to-maturity gross unrealized losses |
0
|
0
|
| Investment securities - HTM |
17,749
|
17,832
|
| Held-to-maturity OTTI in AOCI |
0
|
0
|
| Collateralized mortgage obligations [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Amortized Cost |
42,372
|
19,953
|
| Gross Unrealized Gains |
3
|
13
|
| Gross Unrealized Losses |
489
|
399
|
| Investment securities - available-for-sale (at fair value) |
41,886
|
19,567
|
| OTTI in AOCI |
0
|
0
|
| Held-to-maturity amortized cost |
4,241
|
4,833
|
| Held-to-maturity Gross Unrealized Gains |
0
|
0
|
| Held-to-maturity gross unrealized losses |
50
|
149
|
| Investment securities - HTM |
4,191
|
4,684
|
| Held-to-maturity OTTI in AOCI |
0
|
0
|
| Obligations of states and political subdivisions [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Amortized Cost |
20,911
|
23,700
|
| Gross Unrealized Gains |
419
|
255
|
| Gross Unrealized Losses |
76
|
251
|
| Investment securities - available-for-sale (at fair value) |
21,254
|
23,704
|
| OTTI in AOCI |
0
|
0
|
| Held-to-maturity amortized cost |
8,510
|
8,630
|
| Held-to-maturity Gross Unrealized Gains |
1,326
|
490
|
| Held-to-maturity gross unrealized losses |
0
|
170
|
| Investment securities - HTM |
9,836
|
8,950
|
| Held-to-maturity OTTI in AOCI |
0
|
0
|
| Collateralized debt obligations [Member] |
|
|
| Schedule of Investments [Line Items] |
|
|
| Amortized Cost |
19,719
|
27,930
|
| Gross Unrealized Gains |
0
|
0
|
| Gross Unrealized Losses |
5,001
|
7,676
|
| Investment securities - available-for-sale (at fair value) |
14,718
|
20,254
|
| OTTI in AOCI |
$ (3,556)
|
$ (3,961)
|