|
Details Of Company's Impaired Loans (Detail) (USD $)
In Thousands, unless otherwise specified
|
3 Months Ended |
9 Months Ended |
12 Months Ended |
|
Sep. 30, 2012
|
Sep. 30, 2012
|
Dec. 31, 2011
|
| Financing Receivable, Impaired [Line Items] |
|
|
|
| Recorded Investment, with no allowance recorded |
$ 17,965
|
$ 17,965
|
$ 19,643
|
| Unpaid Principal Balance, with no allowance recorded |
19,870
|
19,870
|
20,633
|
| Related Allowance, with no allowance recorded |
0
|
0
|
0
|
| Average Recorded Investment , with no allowance recorded |
18,032
|
17,426
|
18,590
|
| Interest Income Recognized in Period, with no allowance recorded |
228
|
612
|
665
|
| Recorded Investment, with allowance recorded |
20,785
|
20,785
|
17,610
|
| Unpaid Principal Balance, with allowance recorded |
22,348
|
22,348
|
17,860
|
| Related Allowance, with allowance recorded |
3,925
|
3,925
|
4,181
|
| Average Recorded Investment , with allowance recorded |
21,567
|
22,350
|
16,893
|
| Interest Income Recognized in Period, with allowance recorded |
104
|
436
|
905
|
| Recorded Investment |
38,750
|
38,750
|
37,253
|
| Unpaid Principal Balance |
42,218
|
42,218
|
38,493
|
| Related Allowance |
3,925
|
3,925
|
4,181
|
| Average Recorded Investment |
39,599
|
39,776
|
35,483
|
| Interest Income Recognized in Period |
332
|
1,048
|
1,570
|
|
Commercial Financial And Agricultural Financing Receivable [Member]
|
|
|
|
| Financing Receivable, Impaired [Line Items] |
|
|
|
| Recorded Investment, with no allowance recorded |
2,085
|
2,085
|
1,264
|
| Unpaid Principal Balance, with no allowance recorded |
2,338
|
2,338
|
1,264
|
| Related Allowance, with no allowance recorded |
0
|
0
|
0
|
| Average Recorded Investment , with no allowance recorded |
1,856
|
|
1,501
|
| Interest Income Recognized in Period, with no allowance recorded |
73
|
119
|
74
|
| Recorded Investment, with allowance recorded |
1,289
|
1,289
|
4,314
|
| Unpaid Principal Balance, with allowance recorded |
1,978
|
1,978
|
4,314
|
| Related Allowance, with allowance recorded |
714
|
714
|
1,382
|
| Average Recorded Investment , with allowance recorded |
1,956
|
1,954
|
4,156
|
| Interest Income Recognized in Period, with allowance recorded |
29
|
89
|
226
|
| Recorded Investment |
4,063
|
4,063
|
5,578
|
| Unpaid Principal Balance |
4,316
|
4,316
|
5,578
|
| Related Allowance |
714
|
714
|
1,382
|
| Average Recorded Investment |
3,812
|
3,243
|
5,657
|
| Interest Income Recognized in Period |
102
|
208
|
300
|
|
Commercial Real Estate Construction Financing Receivable [Member]
|
|
|
|
| Financing Receivable, Impaired [Line Items] |
|
|
|
| Recorded Investment, with no allowance recorded |
5,805
|
5,805
|
11,583
|
| Unpaid Principal Balance, with no allowance recorded |
6,350
|
6,350
|
12,573
|
| Related Allowance, with no allowance recorded |
0
|
0
|
0
|
| Average Recorded Investment , with no allowance recorded |
5,833
|
5,733
|
10,406
|
| Interest Income Recognized in Period, with no allowance recorded |
42
|
159
|
226
|
| Recorded Investment, with allowance recorded |
10,201
|
10,201
|
4,679
|
| Unpaid Principal Balance, with allowance recorded |
11,712
|
11,712
|
4,679
|
| Related Allowance, with allowance recorded |
1,177
|
1,177
|
1,482
|
| Average Recorded Investment , with allowance recorded |
10,949
|
11,686
|
3,987
|
| Interest Income Recognized in Period, with allowance recorded |
4
|
134
|
94
|
| Recorded Investment |
16,006
|
16,006
|
16,262
|
| Unpaid Principal Balance |
18,062
|
18,062
|
17,252
|
| Related Allowance |
1,177
|
1,177
|
1,482
|
| Average Recorded Investment |
16,782
|
17,419
|
14,393
|
| Interest Income Recognized in Period |
46
|
293
|
320
|
|
Commercial Mortgage Loans Owner Occupied [Member]
|
|
|
|
| Financing Receivable, Impaired [Line Items] |
|
|
|
| Recorded Investment, with no allowance recorded |
5,228
|
5,228
|
2,493
|
| Unpaid Principal Balance, with no allowance recorded |
5,539
|
5,539
|
|
| Related Allowance, with no allowance recorded |
0
|
0
|
0
|
| Average Recorded Investment , with no allowance recorded |
5,550
|
5,367
|
2,523
|
| Interest Income Recognized in Period, with no allowance recorded |
68
|
182
|
153
|
| Recorded Investment, with allowance recorded |
3,671
|
3,671
|
3,515
|
| Unpaid Principal Balance, with allowance recorded |
3,671
|
3,671
|
3,515
|
| Related Allowance, with allowance recorded |
804
|
804
|
88
|
| Average Recorded Investment , with allowance recorded |
3,675
|
3,794
|
3,504
|
| Interest Income Recognized in Period, with allowance recorded |
26
|
81
|
365
|
| Recorded Investment |
8,899
|
8,899
|
6,008
|
| Unpaid Principal Balance |
9,210
|
9,210
|
6,008
|
| Related Allowance |
804
|
804
|
88
|
| Average Recorded Investment |
9,225
|
9,161
|
6,027
|
| Interest Income Recognized in Period |
94
|
263
|
518
|
|
One To Four Family Mortgage Loans [Member]
|
|
|
|
| Financing Receivable, Impaired [Line Items] |
|
|
|
| Recorded Investment, with no allowance recorded |
1,925
|
1,925
|
1,293
|
| Unpaid Principal Balance, with no allowance recorded |
2,147
|
2,147
|
1,293
|
| Related Allowance, with no allowance recorded |
0
|
0
|
0
|
| Average Recorded Investment , with no allowance recorded |
1,872
|
1,999
|
1,241
|
| Interest Income Recognized in Period, with no allowance recorded |
14
|
56
|
44
|
| Recorded Investment, with allowance recorded |
4,001
|
4,001
|
4,397
|
| Unpaid Principal Balance, with allowance recorded |
4,001
|
4,001
|
4,397
|
| Related Allowance, with allowance recorded |
894
|
894
|
904
|
| Average Recorded Investment , with allowance recorded |
4,001
|
4,000
|
4,484
|
| Interest Income Recognized in Period, with allowance recorded |
38
|
103
|
198
|
| Recorded Investment |
5,926
|
5,926
|
5,690
|
| Unpaid Principal Balance |
6,148
|
6,148
|
5,690
|
| Related Allowance |
894
|
894
|
904
|
| Average Recorded Investment |
5,873
|
5,999
|
5,725
|
| Interest Income Recognized in Period |
52
|
159
|
242
|
|
Other Real Estate Mortgage Loans [Member]
|
|
|
|
| Financing Receivable, Impaired [Line Items] |
|
|
|
| Recorded Investment, with no allowance recorded |
2,886
|
2,886
|
2,837
|
| Unpaid Principal Balance, with no allowance recorded |
2,886
|
2,886
|
2,837
|
| Related Allowance, with no allowance recorded |
0
|
0
|
0
|
| Average Recorded Investment , with no allowance recorded |
2,885
|
2,855
|
2,746
|
| Interest Income Recognized in Period, with no allowance recorded |
31
|
96
|
162
|
| Recorded Investment, with allowance recorded |
642
|
642
|
331
|
| Unpaid Principal Balance, with allowance recorded |
642
|
642
|
331
|
| Related Allowance, with allowance recorded |
255
|
255
|
0
|
| Average Recorded Investment , with allowance recorded |
642
|
648
|
337
|
| Interest Income Recognized in Period, with allowance recorded |
4
|
22
|
22
|
| Recorded Investment |
3,528
|
3,528
|
3,168
|
| Unpaid Principal Balance |
3,528
|
3,528
|
3,168
|
| Related Allowance |
255
|
255
|
0
|
| Average Recorded Investment |
3,527
|
3,503
|
3,083
|
| Interest Income Recognized in Period |
35
|
118
|
184
|
|
Residential Real Estate Mortgage Loans [Member]
|
|
|
|
| Financing Receivable, Impaired [Line Items] |
|
|
|
| Recorded Investment, with no allowance recorded |
10,039
|
10,039
|
6,623
|
| Unpaid Principal Balance, with no allowance recorded |
10,572
|
10,572
|
6,623
|
| Related Allowance, with no allowance recorded |
0
|
0
|
0
|
| Average Recorded Investment , with no allowance recorded |
10,307
|
10,221
|
6,510
|
| Interest Income Recognized in Period, with no allowance recorded |
113
|
334
|
359
|
| Recorded Investment, with allowance recorded |
|
|
8,243
|
| Unpaid Principal Balance, with allowance recorded |
8,314
|
8,314
|
8,243
|
| Related Allowance, with allowance recorded |
1,953
|
1,953
|
992
|
| Average Recorded Investment , with allowance recorded |
8,318
|
8,442
|
8,325
|
| Interest Income Recognized in Period, with allowance recorded |
68
|
206
|
585
|
| Recorded Investment |
18,353
|
18,353
|
14,866
|
| Unpaid Principal Balance |
18,886
|
18,886
|
14,866
|
| Related Allowance |
1,953
|
1,953
|
992
|
| Average Recorded Investment |
18,625
|
18,663
|
14,835
|
| Interest Income Recognized in Period |
181
|
540
|
944
|
|
Consumer Portfolio Segment [Member]
|
|
|
|
| Financing Receivable, Impaired [Line Items] |
|
|
|
| Recorded Investment, with no allowance recorded |
36
|
36
|
173
|
| Unpaid Principal Balance, with no allowance recorded |
610
|
610
|
173
|
| Related Allowance, with no allowance recorded |
0
|
0
|
0
|
| Average Recorded Investment , with no allowance recorded |
36
|
183
|
173
|
| Interest Income Recognized in Period, with no allowance recorded |
0
|
0
|
6
|
| Recorded Investment, with allowance recorded |
292
|
292
|
374
|
| Unpaid Principal Balance, with allowance recorded |
344
|
344
|
624
|
| Related Allowance, with allowance recorded |
81
|
81
|
325
|
| Average Recorded Investment , with allowance recorded |
344
|
268
|
425
|
| Interest Income Recognized in Period, with allowance recorded |
3
|
7
|
0
|
| Recorded Investment |
328
|
328
|
547
|
| Unpaid Principal Balance |
954
|
954
|
797
|
| Related Allowance |
81
|
81
|
325
|
| Average Recorded Investment |
380
|
451
|
598
|
| Interest Income Recognized in Period |
$ 3
|
$ 7
|
$ 6
|