|
Derivative and Hedging Activities - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended |
|---|---|---|
|
Sep. 30, 2013
|
Sep. 30, 2013
|
|
| Derivative Instruments and Hedging Activities Disclosure [Abstract] | ||
| Loss from cash net settlement of the off-market financing element associated with the derivatives from merger | $ 0.1 | $ 0.1 |
| Derivative instruments loss estimated to be reclassified from accumulated OCI as an increase to interest expense | $ 0.4 |