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Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $)
3 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Intangible Assets [Line Items]        
Impairment of trade name $ 2,904,000 $ 2,904,000    
Intangible assets, Amortization expense   $ 1,400,000 $ 1,600,000 $ 1,300,000
Hub [Member]
       
Intangible Assets [Line Items]        
Weighted average life of definite lived intangible assets   6 years 4 months 17 days    
Mode [Member]
       
Intangible Assets [Line Items]        
Weighted average life of definite lived intangible assets   15 years 3 months