|
Components of Income Before Income Taxes (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
|
Sep. 30, 2012
|
Jun. 30, 2012
|
Mar. 31, 2012
|
Dec. 31, 2011
|
Sep. 30, 2011
|
Jun. 30, 2011
|
Mar. 31, 2011
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|
| Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items] | |||||||||||
| United States | $ (4,192) | $ 47,099 | $ 44,400 | ||||||||
| Foreign | 69,460 | 17,214 | 4,302 | ||||||||
| Income (loss) before income taxes | $ 74,011 | $ 4,480 | $ (10,846) | $ (2,377) | $ 35,997 | $ 11,021 | $ 10,504 | $ 6,791 | $ 65,268 | $ 64,313 | $ 48,702 |