|
Loans - Allowances for Loan Losses and Ending Balances by Portfolio Segment and Based on Impairment Method (Detail) (USD $)
In Thousands, unless otherwise specified
|
Jun. 30, 2013
|
Mar. 31, 2013
|
Dec. 31, 2012
|
Jun. 30, 2012
|
Mar. 31, 2012
|
Dec. 31, 2011
|
| Ending allowance balances attributable to loans: |
|
|
|
|
|
|
| Individually evaluated for impairment |
$ 921 |
|
$ 779 |
|
|
|
| Collectively evaluated for impairment |
4,024 |
|
3,801 |
|
|
|
| Total ending allowance balance |
4,945 |
4,804 |
4,580 |
4,471 |
4,246 |
4,082 |
| Loans: |
|
|
|
|
|
|
| Loans individually evaluated for impairment |
8,696 |
|
10,191 |
|
|
|
| Loans collectively evaluated for impairment |
369,247 |
|
354,150 |
|
|
|
| Total ending loans balance |
377,943 |
|
364,341 |
|
|
|
|
Commercial [Member]
|
|
|
|
|
|
|
| Ending allowance balances attributable to loans: |
|
|
|
|
|
|
| Individually evaluated for impairment |
194 |
|
85 |
|
|
|
| Collectively evaluated for impairment |
1,122 |
|
848 |
|
|
|
| Total ending allowance balance |
1,316 |
1,176 |
933 |
896 |
976 |
1,024 |
| Loans: |
|
|
|
|
|
|
| Loans individually evaluated for impairment |
3,504 |
|
4,315 |
|
|
|
| Loans collectively evaluated for impairment |
113,394 |
|
100,584 |
|
|
|
| Total ending loans balance |
116,898 |
|
104,899 |
|
|
|
|
Commercial Real Estate [Member]
|
|
|
|
|
|
|
| Ending allowance balances attributable to loans: |
|
|
|
|
|
|
| Individually evaluated for impairment |
463 |
|
522 |
|
|
|
| Collectively evaluated for impairment |
1,352 |
|
1,380 |
|
|
|
| Total ending allowance balance |
1,815 |
1,824 |
1,902 |
1,927 |
1,649 |
1,673 |
| Loans: |
|
|
|
|
|
|
| Loans individually evaluated for impairment |
3,502 |
|
4,573 |
|
|
|
| Loans collectively evaluated for impairment |
125,511 |
|
114,619 |
|
|
|
| Total ending loans balance |
129,013 |
|
119,192 |
|
|
|
|
Residential Real Estate [Member]
|
|
|
|
|
|
|
| Ending allowance balances attributable to loans: |
|
|
|
|
|
|
| Individually evaluated for impairment |
264 |
|
172 |
|
|
|
| Collectively evaluated for impairment |
910 |
|
924 |
|
|
|
| Total ending allowance balance |
1,174 |
1,282 |
1,096 |
1,051 |
939 |
894 |
| Loans: |
|
|
|
|
|
|
| Loans individually evaluated for impairment |
1,690 |
|
1,137 |
|
|
|
| Loans collectively evaluated for impairment |
109,496 |
|
109,275 |
|
|
|
| Total ending loans balance |
111,186 |
|
110,412 |
|
|
|
|
Construction & Land Development [Member]
|
|
|
|
|
|
|
| Ending allowance balances attributable to loans: |
|
|
|
|
|
|
| Collectively evaluated for impairment |
162 |
|
253 |
|
|
|
| Total ending allowance balance |
162 |
134 |
253 |
217 |
184 |
180 |
| Loans: |
|
|
|
|
|
|
| Loans individually evaluated for impairment |
|
|
166 |
|
|
|
| Loans collectively evaluated for impairment |
14,056 |
|
23,192 |
|
|
|
| Total ending loans balance |
14,056 |
|
23,358 |
|
|
|
|
Consumer [Member]
|
|
|
|
|
|
|
| Ending allowance balances attributable to loans: |
|
|
|
|
|
|
| Collectively evaluated for impairment |
144 |
|
76 |
|
|
|
| Total ending allowance balance |
144 |
68 |
76 |
64 |
74 |
78 |
| Loans: |
|
|
|
|
|
|
| Loans collectively evaluated for impairment |
6,790 |
|
6,480 |
|
|
|
| Total ending loans balance |
6,790 |
|
6,480 |
|
|
|
|
Unallocated [Member]
|
|
|
|
|
|
|
| Ending allowance balances attributable to loans: |
|
|
|
|
|
|
| Collectively evaluated for impairment |
334 |
|
320 |
|
|
|
| Total ending allowance balance |
$ 334 |
$ 320 |
$ 320 |
$ 316 |
$ 424 |
$ 233 |