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Benefit Expense from Income Taxes (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Current:      
Federal-U.S. $ 122 $ 10,265 $ 3,908
State-U.S. 118 2,565 1,101
Total Current 240 12,830 5,009
Deferred:      
Federal-U.S. (4,065) (2,803) (1,936)
State-U.S. 631 (911) (557)
Change in valuation allowance 33,106 22,515 5,566
Total Deferred (3,434) (3,714) (2,493)
Benefit from (provision for) income taxes (3,194) 9,116 2,516
Republic of Ireland and the United Kingdom
      
Deferred:      
Ireland and United Kingdom $ (33,106) $ (22,515) $ (5,566)