|
Income Taxes - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended |
|---|---|
|
Dec. 31, 2013
|
|
| Income Taxes [Line Items] | |
| U.S. federal income tax rate | 35.00% |
| U.S. net operating loss carryforwards | $ 169.2 |
| U.S. net operating loss carryforwards, beginning of expiration date | 2026 |