Details Of Company's Impaired Loans (Detail) (USD $) In Thousands, unless otherwise specified
|
3 Months Ended |
6 Months Ended |
12 Months Ended |
Jun. 30, 2012
|
Jun. 30, 2012
|
Dec. 31, 2011
|
Financing Receivable, Impaired [Line Items] |
|
|
|
Recorded Investment, with no allowance recorded |
$ 20,189
|
$ 20,189
|
$ 19,643
|
Unpaid Principal Balance, with no allowance recorded |
22,544
|
22,544
|
20,633
|
Related Allowance, with no allowance recorded |
|
|
|
Average Recorded Investment , with no allowance recorded |
19,675
|
19,803
|
18,590
|
Interest Income Recognized in Period, with no allowance recorded |
191
|
288
|
665
|
Recorded Investment, with allowance recorded |
18,365
|
18,365
|
17,610
|
Unpaid Principal Balance, with allowance recorded |
19,727
|
19,727
|
17,860
|
Related Allowance, with allowance recorded |
3,129
|
3,129
|
4,181
|
Average Recorded Investment , with allowance recorded |
18,927
|
19,004
|
16,893
|
Interest Income Recognized in Period, with allowance recorded |
167
|
333
|
905
|
Recorded Investment |
38,554
|
38,554
|
37,253
|
Unpaid Principal Balance |
42,271
|
42,271
|
38,493
|
Related Allowance |
3,129
|
3,129
|
4,181
|
Average Recorded Investment |
38,602
|
38,807
|
35,483
|
Interest Income Recognized in Period |
358
|
621
|
1,570
|
Commercial, financial and agricultural
|
|
|
|
Financing Receivable, Impaired [Line Items] |
|
|
|
Recorded Investment, with no allowance recorded |
2,555
|
2,555
|
1,264
|
Unpaid Principal Balance, with no allowance recorded |
2,873
|
2,873
|
1,264
|
Related Allowance, with no allowance recorded |
|
|
|
Average Recorded Investment , with no allowance recorded |
1,902
|
1,818
|
1,501
|
Interest Income Recognized in Period, with no allowance recorded |
25
|
39
|
74
|
Recorded Investment, with allowance recorded |
1,405
|
1,405
|
4,314
|
Unpaid Principal Balance, with allowance recorded |
1,405
|
1,405
|
4,314
|
Related Allowance, with allowance recorded |
372
|
372
|
1,382
|
Average Recorded Investment , with allowance recorded |
1,418
|
1,433
|
4,156
|
Interest Income Recognized in Period, with allowance recorded |
25
|
47
|
226
|
Recorded Investment |
3,960
|
3,960
|
5,578
|
Unpaid Principal Balance |
4,278
|
4,278
|
5,578
|
Related Allowance |
372
|
372
|
1,382
|
Average Recorded Investment |
3,320
|
3,251
|
5,657
|
Interest Income Recognized in Period |
50
|
86
|
300
|
Real estate - construction
|
|
|
|
Financing Receivable, Impaired [Line Items] |
|
|
|
Recorded Investment, with no allowance recorded |
8,772
|
8,772
|
11,583
|
Unpaid Principal Balance, with no allowance recorded |
10,234
|
10,234
|
12,573
|
Related Allowance, with no allowance recorded |
|
|
|
Average Recorded Investment , with no allowance recorded |
8,832
|
8,916
|
10,406
|
Interest Income Recognized in Period, with no allowance recorded |
97
|
130
|
226
|
Recorded Investment, with allowance recorded |
10,757
|
10,757
|
4,679
|
Unpaid Principal Balance, with allowance recorded |
11,898
|
11,898
|
4,679
|
Related Allowance, with allowance recorded |
1,748
|
1,748
|
1,482
|
Average Recorded Investment , with allowance recorded |
11,109
|
11,163
|
3,987
|
Interest Income Recognized in Period, with allowance recorded |
78
|
159
|
94
|
Recorded Investment |
19,529
|
19,529
|
16,262
|
Unpaid Principal Balance |
22,132
|
22,132
|
17,252
|
Related Allowance |
1,748
|
1,748
|
1,482
|
Average Recorded Investment |
19,941
|
20,079
|
14,393
|
Interest Income Recognized in Period |
175
|
289
|
320
|
Owner-occupied commercial
|
|
|
|
Financing Receivable, Impaired [Line Items] |
|
|
|
Recorded Investment, with no allowance recorded |
5,735
|
5,735
|
2,493
|
Unpaid Principal Balance, with no allowance recorded |
5,735
|
5,735
|
2,493
|
Related Allowance, with no allowance recorded |
|
|
|
Average Recorded Investment , with no allowance recorded |
5,752
|
5,769
|
2,523
|
Interest Income Recognized in Period, with no allowance recorded |
42
|
60
|
153
|
Recorded Investment, with allowance recorded |
74
|
74
|
3,515
|
Unpaid Principal Balance, with allowance recorded |
74
|
74
|
3,515
|
Related Allowance, with allowance recorded |
43
|
43
|
88
|
Average Recorded Investment , with allowance recorded |
80
|
82
|
3,504
|
Interest Income Recognized in Period, with allowance recorded |
1
|
2
|
365
|
Recorded Investment |
5,809
|
5,809
|
6,008
|
Unpaid Principal Balance |
5,809
|
5,809
|
6,008
|
Related Allowance |
43
|
43
|
88
|
Average Recorded Investment |
5,832
|
5,851
|
6,027
|
Interest Income Recognized in Period |
43
|
62
|
518
|
1-4 family mortgage
|
|
|
|
Financing Receivable, Impaired [Line Items] |
|
|
|
Recorded Investment, with no allowance recorded |
1,635
|
1,635
|
1,293
|
Unpaid Principal Balance, with no allowance recorded |
1,636
|
1,636
|
1,293
|
Related Allowance, with no allowance recorded |
|
|
|
Average Recorded Investment , with no allowance recorded |
1,632
|
1,631
|
1,241
|
Interest Income Recognized in Period, with no allowance recorded |
17
|
34
|
44
|
Recorded Investment, with allowance recorded |
4,197
|
4,197
|
4,397
|
Unpaid Principal Balance, with allowance recorded |
4,418
|
4,418
|
4,397
|
Related Allowance, with allowance recorded |
811
|
811
|
904
|
Average Recorded Investment , with allowance recorded |
4,413
|
4,414
|
4,484
|
Interest Income Recognized in Period, with allowance recorded |
37
|
72
|
198
|
Recorded Investment |
5,832
|
5,832
|
5,690
|
Unpaid Principal Balance |
6,054
|
6,054
|
5,690
|
Related Allowance |
811
|
811
|
904
|
Average Recorded Investment |
6,045
|
6,045
|
5,725
|
Interest Income Recognized in Period |
54
|
106
|
242
|
Other mortgage
|
|
|
|
Financing Receivable, Impaired [Line Items] |
|
|
|
Recorded Investment, with no allowance recorded |
1,456
|
1,456
|
2,837
|
Unpaid Principal Balance, with no allowance recorded |
1,456
|
1,456
|
2,837
|
Related Allowance, with no allowance recorded |
|
|
|
Average Recorded Investment , with no allowance recorded |
1,419
|
1,413
|
2,746
|
Interest Income Recognized in Period, with no allowance recorded |
10
|
25
|
162
|
Recorded Investment, with allowance recorded |
1,730
|
1,730
|
331
|
Unpaid Principal Balance, with allowance recorded |
1,730
|
1,730
|
331
|
Related Allowance, with allowance recorded |
92
|
92
|
|
Average Recorded Investment , with allowance recorded |
1,734
|
1,739
|
337
|
Interest Income Recognized in Period, with allowance recorded |
25
|
50
|
22
|
Recorded Investment |
3,186
|
3,186
|
3,168
|
Unpaid Principal Balance |
3,186
|
3,186
|
3,168
|
Related Allowance |
92
|
92
|
|
Average Recorded Investment |
3,153
|
3,152
|
3,083
|
Interest Income Recognized in Period |
35
|
75
|
184
|
Real estate - mortgage
|
|
|
|
Financing Receivable, Impaired [Line Items] |
|
|
|
Recorded Investment, with no allowance recorded |
8,826
|
8,826
|
6,623
|
Unpaid Principal Balance, with no allowance recorded |
8,827
|
8,827
|
6,623
|
Related Allowance, with no allowance recorded |
|
|
|
Average Recorded Investment , with no allowance recorded |
8,803
|
8,813
|
6,510
|
Interest Income Recognized in Period, with no allowance recorded |
69
|
119
|
359
|
Recorded Investment, with allowance recorded |
6,001
|
6,001
|
8,243
|
Unpaid Principal Balance, with allowance recorded |
6,222
|
6,222
|
8,243
|
Related Allowance, with allowance recorded |
946
|
946
|
992
|
Average Recorded Investment , with allowance recorded |
6,227
|
6,235
|
8,325
|
Interest Income Recognized in Period, with allowance recorded |
63
|
124
|
585
|
Recorded Investment |
14,827
|
14,827
|
14,866
|
Unpaid Principal Balance |
15,049
|
15,049
|
14,866
|
Related Allowance |
946
|
946
|
992
|
Average Recorded Investment |
15,030
|
15,048
|
14,835
|
Interest Income Recognized in Period |
132
|
243
|
944
|
Consumer
|
|
|
|
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 |
|
|
|
Average Recorded Investment , with no allowance recorded |
138
|
256
|
173
|
Interest Income Recognized in Period, with no allowance recorded |
|
|
6
|
Recorded Investment, with allowance recorded |
202
|
202
|
374
|
Unpaid Principal Balance, with allowance recorded |
202
|
202
|
624
|
Related Allowance, with allowance recorded |
63
|
63
|
325
|
Average Recorded Investment , with allowance recorded |
173
|
173
|
425
|
Interest Income Recognized in Period, with allowance recorded |
1
|
3
|
|
Recorded Investment |
238
|
238
|
547
|
Unpaid Principal Balance |
812
|
812
|
797
|
Related Allowance |
63
|
63
|
325
|
Average Recorded Investment |
311
|
429
|
598
|
Interest Income Recognized in Period |
$ 1
|
$ 3
|
$ 6
|