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Other Comprehensive (Loss) Income - Activity in Accumulated Other Comprehensive Income, Net of Tax (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]    
Beginning Balance, Accumulated Other Comprehensive Income $ 4,883 $ 8,986
Other comprehensive loss, Accumulated Other Comprehensive Income (318) (1,151)
Ending Balance, Accumulated Other Comprehensive Income $ 4,565 $ 7,835