Investment Securities Available-for-Sale - Summary of Amortized Cost and Estimated Fair Values of Investment Securities Available-for-Sale (Detail) - USD ($)
$ in Thousands |
Sep. 30, 2015 |
Dec. 31, 2014 |
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Amortized Cost |
$ 53,244
|
$ 48,094
|
| Gross Unrealized Gains |
694
|
791
|
| Gross Unrealized Losses |
85
|
67
|
| Fair Value |
53,853
|
48,818
|
| U.S. Government Agency Securities [Member] |
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Amortized Cost |
776
|
798
|
| Gross Unrealized Gains |
31
|
20
|
| Gross Unrealized Losses |
|
1
|
| Fair Value |
807
|
817
|
| State and Municipal [Member] |
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Amortized Cost |
27,089
|
23,296
|
| Gross Unrealized Gains |
430
|
474
|
| Gross Unrealized Losses |
77
|
62
|
| Fair Value |
27,442
|
23,708
|
| Mortgage-Backed Securities [Member] |
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Amortized Cost |
18,551
|
20,676
|
| Gross Unrealized Gains |
157
|
229
|
| Gross Unrealized Losses |
7
|
3
|
| Fair Value |
18,701
|
20,902
|
| Collateralized Mortgage Obligations (CMOs) [Member] |
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Amortized Cost |
1,867
|
2,364
|
| Gross Unrealized Gains |
43
|
28
|
| Gross Unrealized Losses |
1
|
1
|
| Fair Value |
1,909
|
2,391
|
| Corporate Debt Obligations [Member] |
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Amortized Cost |
4,490
|
489
|
| Gross Unrealized Gains |
19
|
16
|
| Fair Value |
4,509
|
505
|
| Equity Securities, Financial Services [Member] |
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
| Amortized Cost |
471
|
471
|
| Gross Unrealized Gains |
14
|
24
|
| Fair Value |
$ 485
|
$ 495
|