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Subsequent Events - Additional Information (Detail) (USD $)
 12 Months Ended 12 Months Ended 0 Months Ended 1 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Scenario, Forecast [Member]
Jan. 31, 2014
Subsequent Events [Member]
Jan. 31, 2014
Subsequent Events [Member]
Jan. 31, 2014
Subsequent Events [Member]
Business Interruption Insurance [Member]
Subsequent Event [Line Items]            
Approved insurance payments $ 15,000,000          
Insurance claim receivable 1,865,000 10,059,000   28,500,000 28,500,000  
Aggregate amount of claim settlement         43,500,000  
Approved insurance payments           36,500,000
Deductible property damage under insurance         2,500,000  
Income recognized from insurance recover     28,000,000      
Dividends on Preferred Stock       $ 300,000