|
Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2013
Segment
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
| Goodwill And Intangible Assets Disclosure [Abstract] | |||
| Aggregate amortization expense | $ 2.5 | $ 2.7 | $ 3.8 |
| Number of reporting segments | 2 | ||