Share Based Compensation - Components of Share-Based Compensation Expense (Income) (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | |
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Mar. 31, 2014
|
Mar. 31, 2013
|
|
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] | ||
Total share-based compensation | $ 313 | $ 10,415 |
Cash Settled Awards [Member]
|
||
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] | ||
Total share-based compensation | (2,683) | 6,647 |
Equity-settled awards [Member]
|
||
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] | ||
Total share-based compensation | 2,349 | 1,719 |
Restricted Stock [Member]
|
||
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] | ||
Total share-based compensation | 46 | 395 |
Employee Stock Option [Member]
|
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Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] | ||
Total share-based compensation | $ 601 | $ 1,654 |