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Employee Benefit Plans - Additional Information (Detail) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Pension Plans, Postretirement and Other Employee Benefits [Line Items]      
Participant's compensation 6.00% 6.00% 6.00%
Percentage of employee's salary into a retirement account 5.00%    
Minimum employee contribution 3.00%    
Company's defined contribution plans $ 1,700,000 $ 1,500,000 $ 1,400,000
Assets for plan benefits 0    
Balance accrued for benefits totaled $ 87,000 $ 100,000  
Measurement Dates 2013-12-31 2012-12-31  
Year One [Member]
     
Pension Plans, Postretirement and Other Employee Benefits [Line Items]      
Employer profit sharing contribution 25.00%    
Year Two [Member]
     
Pension Plans, Postretirement and Other Employee Benefits [Line Items]      
Employer profit sharing contribution 50.00%    
Year Three [Member]
     
Pension Plans, Postretirement and Other Employee Benefits [Line Items]      
Employer profit sharing contribution 100.00%