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Stock-Based Compensation - Stock-Based Employee Compensation Expense (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Labor And Related Expense [Abstract]      
Stock-based compensation expense $ 1,360 $ 1,530 $ 1,375
Tax benefit 526 592 532
Stock-based compensation expense, net of tax $ 834 $ 938 $ 843