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Stockholders' Equity - Additional Information (Detail) (USD $)
 12 Months Ended 0 Months Ended 12 Months Ended 0 Months Ended 3 Months Ended 0 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Feb. 19, 2014
Subsequent Event [Member]
Dec. 31, 2013
Common Stock [Member]
Feb. 19, 2014
Common Stock [Member]
Subsequent Event [Member]
Aug. 01, 2013
August 2013 Stock Repurchase Program [Member]
Sep. 30, 2013
August 2013 Stock Repurchase Program [Member]
Oct. 24, 2013
October 2013 Stock Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]                
Stock repurchase authorized amount     $ 50,000,000     $ 25,000,000   $ 30,000,000
Number of shares repurchased by the Company       (561,255)     561,255 0
Value of shares repurchased by the Company $ 25,000,000           $ 25,000,000  
Average price per share of shares repurchased by the Company             $ 44.54  
Expiration date of authorized additional common stock repurchase program               Feb. 10, 2014
Common Stock par value $ 0.01 $ 0.01 $ 0.01          
Stock split ratio         two-for-one stock split