Allowance for Loan Losses - Impaired Loans (Detail) - USD ($) $ in Thousands |
6 Months Ended |
12 Months Ended |
Jun. 30, 2015 |
Jun. 30, 2014 |
Dec. 31, 2014 |
Originated loans [Member] |
|
|
|
Financing Receivable, Recorded Investment, Past Due [Line Items] |
|
|
|
Recorded investment, With no related allowance recorded |
$ 48,095
|
$ 59,734
|
$ 48,466
|
Unpaid principal, With no related allowance recorded |
57,909
|
72,767
|
61,660
|
Average recorded Investment, With no related allowance recorded |
48,279
|
65,857
|
57,354
|
Interest income Recognized, With no related allowance recorded |
836
|
711
|
1,095
|
Recorded investment, With an allowance recorded |
9,999
|
11,076
|
11,021
|
Unpaid principal, With an allowance recorded |
10,938
|
12,107
|
11,863
|
Related allowance, With an allowance recorded |
3,518
|
3,394
|
3,646
|
Average recorded Investment, With an allowance recorded |
10,510
|
13,504
|
11,938
|
Interest income Recognized, With an allowance recorded |
166
|
181
|
409
|
PNCI loans [Member] |
|
|
|
Financing Receivable, Recorded Investment, Past Due [Line Items] |
|
|
|
Recorded investment, With no related allowance recorded |
4,626
|
985
|
1,124
|
Unpaid principal, With no related allowance recorded |
4,813
|
3,183
|
3,433
|
Average recorded Investment, With no related allowance recorded |
2,875
|
1,254
|
1,344
|
Interest income Recognized, With no related allowance recorded |
78
|
5
|
14
|
Recorded investment, With an allowance recorded |
2,306
|
1,073
|
1,636
|
Unpaid principal, With an allowance recorded |
2,334
|
1,094
|
1,654
|
Related allowance, With an allowance recorded |
727
|
546
|
621
|
Average recorded Investment, With an allowance recorded |
1,972
|
793
|
1,107
|
Interest income Recognized, With an allowance recorded |
31
|
17
|
48
|
RE Mortgage [Member] | Residential [Member] | Originated loans [Member] |
|
|
|
Financing Receivable, Recorded Investment, Past Due [Line Items] |
|
|
|
Recorded investment, With no related allowance recorded |
3,770
|
4,002
|
3,287
|
Unpaid principal, With no related allowance recorded |
5,901
|
6,227
|
5,138
|
Average recorded Investment, With no related allowance recorded |
3,528
|
4,228
|
3,826
|
Interest income Recognized, With no related allowance recorded |
19
|
23
|
38
|
Recorded investment, With an allowance recorded |
2,780
|
2,821
|
2,724
|
Unpaid principal, With an allowance recorded |
2,958
|
2,893
|
2,865
|
Related allowance, With an allowance recorded |
784
|
625
|
797
|
Average recorded Investment, With an allowance recorded |
2,752
|
2,594
|
2,677
|
Interest income Recognized, With an allowance recorded |
40
|
34
|
91
|
RE Mortgage [Member] | Residential [Member] | PNCI loans [Member] |
|
|
|
Financing Receivable, Recorded Investment, Past Due [Line Items] |
|
|
|
Recorded investment, With no related allowance recorded |
290
|
144
|
343
|
Unpaid principal, With no related allowance recorded |
316
|
144
|
353
|
Average recorded Investment, With no related allowance recorded |
317
|
94
|
246
|
Interest income Recognized, With no related allowance recorded |
3
|
6
|
14
|
Recorded investment, With an allowance recorded |
627
|
430
|
834
|
Unpaid principal, With an allowance recorded |
643
|
442
|
852
|
Related allowance, With an allowance recorded |
72
|
155
|
177
|
Average recorded Investment, With an allowance recorded |
731
|
352
|
516
|
Interest income Recognized, With an allowance recorded |
4
|
4
|
8
|
RE Mortgage [Member] | Commercial [Member] | Originated loans [Member] |
|
|
|
Financing Receivable, Recorded Investment, Past Due [Line Items] |
|
|
|
Recorded investment, With no related allowance recorded |
40,294
|
48,781
|
38,477
|
Unpaid principal, With no related allowance recorded |
44,441
|
51,862
|
41,949
|
Average recorded Investment, With no related allowance recorded |
39,385
|
54,387
|
45,915
|
Interest income Recognized, With no related allowance recorded |
795
|
651
|
995
|
Recorded investment, With an allowance recorded |
2,365
|
3,163
|
2,943
|
Unpaid principal, With an allowance recorded |
2,448
|
3,324
|
3,101
|
Related allowance, With an allowance recorded |
216
|
282
|
302
|
Average recorded Investment, With an allowance recorded |
2,654
|
5,012
|
4,119
|
Interest income Recognized, With an allowance recorded |
56
|
76
|
144
|
RE Mortgage [Member] | Commercial [Member] | PNCI loans [Member] |
|
|
|
Financing Receivable, Recorded Investment, Past Due [Line Items] |
|
|
|
Recorded investment, With no related allowance recorded |
3,633
|
478
|
366
|
Unpaid principal, With no related allowance recorded |
3,713
|
2,648
|
2,620
|
Average recorded Investment, With no related allowance recorded |
1,999
|
822
|
753
|
Interest income Recognized, With no related allowance recorded |
74
|
|
|
Recorded investment, With an allowance recorded |
826
|
148
|
146
|
Unpaid principal, With an allowance recorded |
836
|
148
|
146
|
Related allowance, With an allowance recorded |
203
|
110
|
108
|
Average recorded Investment, With an allowance recorded |
486
|
153
|
148
|
Interest income Recognized, With an allowance recorded |
12
|
4
|
8
|
Home equity lines of credit [Member] | Originated loans [Member] |
|
|
|
Financing Receivable, Recorded Investment, Past Due [Line Items] |
|
|
|
Recorded investment, With no related allowance recorded |
2,475
|
2,641
|
3,001
|
Unpaid principal, With no related allowance recorded |
5,340
|
5,592
|
6,094
|
Average recorded Investment, With no related allowance recorded |
2,738
|
3,419
|
3,355
|
Interest income Recognized, With no related allowance recorded |
2
|
5
|
26
|
Recorded investment, With an allowance recorded |
2,513
|
3,559
|
3,185
|
Unpaid principal, With an allowance recorded |
2,973
|
4,231
|
3,533
|
Related allowance, With an allowance recorded |
1,481
|
1,810
|
1,769
|
Average recorded Investment, With an allowance recorded |
2,849
|
3,196
|
2,982
|
Interest income Recognized, With an allowance recorded |
25
|
35
|
71
|
Home equity lines of credit [Member] | PNCI loans [Member] |
|
|
|
Financing Receivable, Recorded Investment, Past Due [Line Items] |
|
|
|
Recorded investment, With no related allowance recorded |
637
|
320
|
346
|
Unpaid principal, With no related allowance recorded |
696
|
337
|
374
|
Average recorded Investment, With no related allowance recorded |
492
|
291
|
287
|
Interest income Recognized, With no related allowance recorded |
1
|
(1)
|
(1)
|
Recorded investment, With an allowance recorded |
511
|
467
|
436
|
Unpaid principal, With an allowance recorded |
512
|
476
|
436
|
Related allowance, With an allowance recorded |
298
|
278
|
205
|
Average recorded Investment, With an allowance recorded |
474
|
260
|
319
|
Interest income Recognized, With an allowance recorded |
9
|
8
|
20
|
Home equity loans [Member] | Originated loans [Member] |
|
|
|
Financing Receivable, Recorded Investment, Past Due [Line Items] |
|
|
|
Recorded investment, With no related allowance recorded |
779
|
626
|
750
|
Unpaid principal, With no related allowance recorded |
1,256
|
1,032
|
1,187
|
Average recorded Investment, With no related allowance recorded |
764
|
540
|
651
|
Interest income Recognized, With no related allowance recorded |
|
1
|
6
|
Recorded investment, With an allowance recorded |
598
|
245
|
504
|
Unpaid principal, With an allowance recorded |
704
|
325
|
597
|
Related allowance, With an allowance recorded |
346
|
211
|
284
|
Average recorded Investment, With an allowance recorded |
551
|
204
|
365
|
Interest income Recognized, With an allowance recorded |
3
|
2
|
13
|
Home equity loans [Member] | PNCI loans [Member] |
|
|
|
Financing Receivable, Recorded Investment, Past Due [Line Items] |
|
|
|
Recorded investment, With no related allowance recorded |
20
|
|
25
|
Unpaid principal, With no related allowance recorded |
22
|
|
25
|
Average recorded Investment, With no related allowance recorded |
22
|
|
12
|
Recorded investment, With an allowance recorded |
41
|
|
|
Unpaid principal, With an allowance recorded |
42
|
|
|
Related allowance, With an allowance recorded |
41
|
|
|
Average recorded Investment, With an allowance recorded |
20
|
|
|
Auto Indirect [Member] | Originated loans [Member] |
|
|
|
Financing Receivable, Recorded Investment, Past Due [Line Items] |
|
|
|
Recorded investment, With no related allowance recorded |
|
33
|
14
|
Unpaid principal, With no related allowance recorded |
|
70
|
49
|
Average recorded Investment, With no related allowance recorded |
|
49
|
35
|
Recorded investment, With an allowance recorded |
|
7
|
4
|
Unpaid principal, With an allowance recorded |
|
10
|
6
|
Average recorded Investment, With an allowance recorded |
|
5
|
4
|
Other Consumer [Member] | Originated loans [Member] |
|
|
|
Financing Receivable, Recorded Investment, Past Due [Line Items] |
|
|
|
Recorded investment, With no related allowance recorded |
23
|
16
|
25
|
Unpaid principal, With no related allowance recorded |
46
|
22
|
32
|
Average recorded Investment, With no related allowance recorded |
31
|
21
|
21
|
Interest income Recognized, With no related allowance recorded |
|
|
1
|
Recorded investment, With an allowance recorded |
37
|
|
41
|
Unpaid principal, With an allowance recorded |
47
|
|
41
|
Related allowance, With an allowance recorded |
15
|
|
11
|
Average recorded Investment, With an allowance recorded |
41
|
6
|
25
|
Other Consumer [Member] | PNCI loans [Member] |
|
|
|
Financing Receivable, Recorded Investment, Past Due [Line Items] |
|
|
|
Recorded investment, With no related allowance recorded |
42
|
33
|
37
|
Unpaid principal, With no related allowance recorded |
62
|
44
|
54
|
Average recorded Investment, With no related allowance recorded |
40
|
35
|
36
|
Recorded investment, With an allowance recorded |
301
|
28
|
220
|
Unpaid principal, With an allowance recorded |
301
|
28
|
220
|
Related allowance, With an allowance recorded |
113
|
3
|
131
|
Average recorded Investment, With an allowance recorded |
261
|
28
|
124
|
Interest income Recognized, With an allowance recorded |
6
|
1
|
12
|
C&I [Member] | Originated loans [Member] |
|
|
|
Financing Receivable, Recorded Investment, Past Due [Line Items] |
|
|
|
Recorded investment, With no related allowance recorded |
338
|
1,151
|
412
|
Unpaid principal, With no related allowance recorded |
366
|
1,174
|
433
|
Average recorded Investment, With no related allowance recorded |
375
|
1,266
|
1,030
|
Interest income Recognized, With no related allowance recorded |
11
|
31
|
26
|
Recorded investment, With an allowance recorded |
1,706
|
998
|
1,338
|
Unpaid principal, With an allowance recorded |
1,808
|
1,041
|
1,438
|
Related allowance, With an allowance recorded |
676
|
405
|
423
|
Average recorded Investment, With an allowance recorded |
1,522
|
1,524
|
1,428
|
Interest income Recognized, With an allowance recorded |
42
|
25
|
71
|
C&I [Member] | PNCI loans [Member] |
|
|
|
Financing Receivable, Recorded Investment, Past Due [Line Items] |
|
|
|
Recorded investment, With no related allowance recorded |
4
|
10
|
7
|
Unpaid principal, With no related allowance recorded |
4
|
10
|
7
|
Average recorded Investment, With no related allowance recorded |
5
|
12
|
10
|
Interest income Recognized, With no related allowance recorded |
|
|
1
|
Construction [Member] | Residential [Member] | Originated loans [Member] |
|
|
|
Financing Receivable, Recorded Investment, Past Due [Line Items] |
|
|
|
Recorded investment, With no related allowance recorded |
328
|
2,468
|
2,401
|
Unpaid principal, With no related allowance recorded |
376
|
6,689
|
6,588
|
Average recorded Investment, With no related allowance recorded |
1,364
|
1,904
|
2,437
|
Interest income Recognized, With no related allowance recorded |
9
|
|
|
Recorded investment, With an allowance recorded |
|
283
|
282
|
Unpaid principal, With an allowance recorded |
|
283
|
282
|
Related allowance, With an allowance recorded |
|
61
|
60
|
Average recorded Investment, With an allowance recorded |
141
|
890
|
283
|
Interest income Recognized, With an allowance recorded |
|
9
|
19
|
Construction [Member] | Commercial [Member] | Originated loans [Member] |
|
|
|
Financing Receivable, Recorded Investment, Past Due [Line Items] |
|
|
|
Recorded investment, With no related allowance recorded |
88
|
16
|
99
|
Unpaid principal, With no related allowance recorded |
183
|
99
|
190
|
Average recorded Investment, With no related allowance recorded |
$ 94
|
43
|
84
|
Interest income Recognized, With no related allowance recorded |
|
|
3
|
Average recorded Investment, With an allowance recorded |
|
$ 73
|
$ 55
|