Average Recorded Investment and Interest Income Recognized on Impaired Loans Excluding Purchased Credit Impaired Loans (Detail) - USD ($)
$ in Thousands |
Sep. 30, 2016 |
Dec. 31, 2015 |
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Impaired loans with no related allowance, Recorded Investment |
$ 7,436
|
$ 11,184
|
| Impaired loans with a related allowance, Recorded Investment |
9,358
|
11,534
|
| Total impaired loans, Recorded Investment |
16,794
|
22,718
|
| Impaired loans with no related allowance, Unpaid Principal balance |
7,652
|
11,277
|
| Impaired loans with a related allowance, Unpaid Principal Balance |
9,442
|
11,558
|
| Total impaired loans, Unpaid Principal Balance |
17,094
|
22,835
|
| Impaired loans with no related allowance, Related Allowance |
0
|
0
|
| Impaired loans with a related allowance, Related Allowance |
2,803
|
2,371
|
| Total impaired loans, Related Allowance |
2,803
|
2,371
|
| Commercial Loans | Multi-family Residential |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Impaired loans with no related allowance, Recorded Investment |
292
|
|
| Impaired loans with no related allowance, Unpaid Principal balance |
297
|
|
| Impaired loans with no related allowance, Related Allowance |
0
|
0
|
| Commercial Loans | Single-family Non-owner Occupied |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Impaired loans with no related allowance, Recorded Investment |
455
|
782
|
| Impaired loans with a related allowance, Recorded Investment |
676
|
619
|
| Impaired loans with no related allowance, Unpaid Principal balance |
455
|
783
|
| Impaired loans with a related allowance, Unpaid Principal Balance |
677
|
623
|
| Impaired loans with no related allowance, Related Allowance |
0
|
0
|
| Impaired loans with a related allowance, Related Allowance |
107
|
124
|
| Commercial Loans | Non-farm, Non-residential |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Impaired loans with no related allowance, Recorded Investment |
5,210
|
8,427
|
| Impaired loans with a related allowance, Recorded Investment |
4,599
|
5,667
|
| Impaired loans with no related allowance, Unpaid Principal balance |
5,352
|
8,427
|
| Impaired loans with a related allowance, Unpaid Principal Balance |
4,636
|
5,673
|
| Impaired loans with no related allowance, Related Allowance |
0
|
0
|
| Impaired loans with a related allowance, Related Allowance |
1,843
|
1,568
|
| Consumer Real Estate | Single Family Owner Occupied |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Impaired loans with no related allowance, Recorded Investment |
1,137
|
1,975
|
| Impaired loans with a related allowance, Recorded Investment |
4,083
|
4,899
|
| Impaired loans with no related allowance, Unpaid Principal balance |
1,195
|
2,067
|
| Impaired loans with a related allowance, Unpaid Principal Balance |
4,129
|
4,907
|
| Impaired loans with no related allowance, Related Allowance |
0
|
0
|
| Impaired loans with a related allowance, Related Allowance |
853
|
672
|
| Consumer Real Estate | Owner Occupied Construction |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Impaired loans with no related allowance, Recorded Investment |
342
|
|
| Impaired loans with a related allowance, Recorded Investment |
|
349
|
| Impaired loans with no related allowance, Unpaid Principal balance |
353
|
|
| Impaired loans with a related allowance, Unpaid Principal Balance |
|
355
|
| Impaired loans with no related allowance, Related Allowance |
$ 0
|
0
|
| Impaired loans with a related allowance, Related Allowance |
|
$ 7
|