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Summary of Income Tax Current and Deferred Provision (Benefit) (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Current:      
Federal     $ (19)
State 18 16 4
Foreign 32 20 (3)
Total current income tax provision (benefit) 50 36 (18)
Deferred:      
Federal 57 66 55
State 12 (16) 16
Foreign (8) 3 5
Total deferred income tax provision (benefit) 61 53 76
Total income tax provision (benefit) $ 111 $ 89 $ 58