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Related-Party Arrangements - Additional Information (Detail) (USD $)
 0 Months Ended 1 Months Ended 12 Months Ended 275 Months Ended 0 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended 24 Months Ended 3 Months Ended 12 Months Ended 24 Months Ended
Dec. 20, 2012
May 17, 2012
Dec. 31, 2012
Oct. 31, 2012
May 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Jun. 30, 2012
Jun. 27, 2012
Feb. 08, 2012
Aug. 05, 2005
Private Placement
Oct. 31, 2012
Restricted Stock
Private Placement
Oct. 31, 2012
Warrant Liability
Private Placement
Oct. 31, 2013
Principal stockholder
Oct. 31, 2007
Principal stockholder
Feb. 28, 2009
Principal stockholder
Loan Arrangement
Dec. 31, 2013
Principal stockholder
Loan Arrangement
Dec. 31, 2013
Principal stockholder
Loan Arrangement
Maximum
Dec. 31, 2013
Principal stockholder
Loan Arrangement
Minimum
Oct. 31, 2013
Principal stockholder
Amended Agreement
Dec. 31, 2013
Related Party Debt
Letter Agreement
Dec. 31, 2013
Related Party Debt
Letter Agreement
LIBOR
Aug. 10, 2010
Mann Group
Dec. 31, 2011
Mann Group
Mar. 31, 2011
Mann Group
Dec. 31, 2010
Mann Group
Dec. 31, 2011
Mann Group
Dec. 20, 2012
Mann Group
Oct. 31, 2012
Mann Group
Feb. 08, 2012
Mann Group
Oct. 31, 2012
Mann Group
Warrant Liability
Oct. 31, 2012
Mann Group
Warrant Liability
Private Placement
Mar. 31, 2011
Seaside Eight Eight Limited Partnership
Dec. 31, 2010
Seaside Eight Eight Limited Partnership
Dec. 31, 2011
Seaside Eight Eight Limited Partnership
Mar. 31, 2011
Seaside Eight Eight Limited Partnership
Dec. 31, 2010
Seaside Eight Eight Limited Partnership
Dec. 31, 2011
Seaside Eight Eight Limited Partnership
Related Party Transaction [Line Items]                                                                                
Loan agreement with related party                               $ 370,000,000 $ 350,000,000                                              
Interest rate (LIBOR)                                   3.00%           5.00%                                
Description of variable rate interest                                   One-year LIBOR         The interest rate will increase to the one-year LIBOR rate calculated on the date of the initial advance or in effect on the date of default, whichever is greater, plus 5% per annum.                                  
Fixed borrowing rate                                     5.84%                                          
Promissory note maturity date                                           Jan. 05, 2020                                    
Principal indebtedness cancelled under the loan arrangement as payment for the aggregate exercise price of The Mann Group Warrants                                           78,000,000                                    
Accrued interest that became due and payable upon cancellation of the of principal indebtedness, to be capitalized                                           7,900,000                                    
Principal amount outstanding under credit facility                                     49,500,000                                          
Amount available for future borrowings           30,100,000     30,100,000                   30,100,000                                          
Amount prepaid for cancellation of indebtedness                                       200,000,000                                        
Number of months advances outstanding                                         12 months                                      
Related party transaction prepayment period                                     90 days                                          
Aggregate principal amount cancelled                                     105,000,000                                          
Closing bid price of common stock                                                 $ 7.15                              
Cancellation of principal on note payable to related party           78,000,000 184,537,000 11,116,000 290,334,000                               350,000,000   27,800,000                          
Common stock issued and sold                         17,132,000                         1,400,000 1,400,000 2,100,000 3,500,000           1,400,000 2,100,000 3,500,000 1,400,000 2,100,000 3,500,000
Net proceeds from issuance of common stock                 3,900,000                                 11,100,000   16,700,000 11,100,000           9,700,000 14,100,000 23,800,000 9,700,000 14,100,000 23,800,000
Underwritten public offering                       86,300,000                                                        
Unit sold composition description                       Each unit consisting of one share of common stock and a warrant to purchase 0.6 of a share of common stock                                                        
Common stock warrant to purchase of share                       0.6                                                        
Restricted Stock Agreed to be Purchased by Lender                   77,200,000   77,200,000                                   107,400,000 107,400,000                  
Authorized shares under common stock purchase agreement 350,000,000 250,000,000 350,000,000   250,000,000                                                                      
Common stock, shares authorized 550,000,000 350,000,000 550,000,000   350,000,000 550,000,000 550,000,000   550,000,000                                                              
Common stock, shares outstanding     286,035,082     369,391,972 286,035,082   369,391,972   31,250,000                                         31,250,000                
Net proceeds from public offering       92,000,000                                                                        
Number of shares in each units issued       1                                                                        
Warrants holder exercisable ratio per common stock       0.75                                                                        
Selling price of restricted shares                                                             $ 2.59                  
Underwritten public offering       40,000,000                   40,000,000 40,000,000                                                  
Restricted warrants sale price                                                                 $ 0.125              
Number of shares represented by purchased warrants                                                                   30,000,000            
Accrued interest of related party debt     2,200,000     600,000 2,200,000   600,000                                                              
Available borrowings under loan agreement     125,400,000     30,100,000 125,400,000   30,100,000                                                              
Interest expense on note payable principal stockholder           6,309,000 10,491,000 10,883,000 45,134,000                                                              
Expenses related to charter service on behalf of principal shareholder           $ 82,000 $ 200,000 $ 111,000