|
Employee Benefit Plans - Information Pertaining to the Activity in the Plan (Detail) (USD $)
In Thousands, unless otherwise specified
|
12 Months Ended |
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
Supplemental Executive Retirement Benefits [Member]
|
|
|
|
| Change in plan assets: |
|
|
|
| Fair value of plan assets at beginning of year |
|
|
|
| Employer contribution |
|
302 |
|
| Benefit payments |
|
(302) |
|
| Fair value of plan assets at end of year |
|
|
|
| Change in benefit obligation: |
|
|
|
| Benefit obligation at beginning of year |
1,091 |
1,245 |
828 |
| Service cost |
85 |
91 |
87 |
| Interest cost |
35 |
42 |
43 |
| Benefit payments |
|
(302) |
|
| Actuarial (gain) loss |
(137) |
15 |
287 |
| Benefit obligation at end of year |
1,074 |
1,091 |
1,245 |
| Funded status at end of year |
(1,074) |
(1,091) |
(1,245) |
| Accrued benefit obligation at end of year |
(1,074) |
(1,091) |
(1,245) |
| Accumulated benefit obligation at end of year |
(1,000) |
(1,006) |
(1,153) |
|
Long-Term Health Care Plan [Member]
|
|
|
|
| Change in plan assets: |
|
|
|
| Fair value of plan assets at beginning of year |
|
|
|
| Employer contribution |
48 |
44 |
44 |
| Benefit payments |
(48) |
(44) |
(44) |
| Fair value of plan assets at end of year |
|
|
|
| Change in benefit obligation: |
|
|
|
| Benefit obligation at beginning of year |
801 |
759 |
737 |
| Service cost |
|
|
|
| Interest cost |
24 |
30 |
33 |
| Benefit payments |
(48) |
(44) |
(44) |
| Actuarial (gain) loss |
(45) |
56 |
33 |
| Benefit obligation at end of year |
732 |
801 |
759 |
| Funded status at end of year |
(732) |
(801) |
(759) |
| Accumulated benefit obligation at end of year |
$ (732) |
$ (801) |
$ (759) |