|
Amounts and Expiration dates of Operating Loss Carryforwards (Detail) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2012
|
|---|---|
| Operating Loss Carryforwards [Line Items] | |
| Amount of operating loss carried forward | $ 296,987 |
|
31 December 2013
|
|
| Operating Loss Carryforwards [Line Items] | |
| Amount of operating loss carried forward | 32,326 |
|
31 December 2014
|
|
| Operating Loss Carryforwards [Line Items] | |
| Amount of operating loss carried forward | 94,305 |
|
31 December 2015
|
|
| Operating Loss Carryforwards [Line Items] | |
| Amount of operating loss carried forward | 87,016 |
|
31 December 2016
|
|
| Operating Loss Carryforwards [Line Items] | |
| Amount of operating loss carried forward | 14,026 |
|
31 December 2017
|
|
| Operating Loss Carryforwards [Line Items] | |
| Amount of operating loss carried forward | 4,493 |
|
There After
|
|
| Operating Loss Carryforwards [Line Items] | |
| Amount of operating loss carried forward | $ 64,821 |