Annual report pursuant to Section 13 and 15(d)

Litigation Trust Entity (Details)

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Litigation Trust Entity (Details) (USD $)
0 Months Ended 1 Months Ended 12 Months Ended
Jan. 20, 1998
Dec. 31, 2009
Dec. 31, 2011
Dec. 31, 1997
Litigation Trust Entity [Line Items]        
Amount paid by company to litigation trust       $ 3,000,000
Percentage of interest in litigation trust owned by Gulfport     12.00%  
Percentage of interest in litigation trust owned by former general unsecured creditors of Gulfport     88.00%  
Reorganization cost       3,000,000
Distribution received from litigation trust $ 100,000 $ 234,000    
Maximum [Member]
       
Litigation Trust Entity [Line Items]        
Percentage of entitled net proceeds from claims 80.00%      
Minimum [Member]
       
Litigation Trust Entity [Line Items]        
Percentage of entitled net proceeds from claims 20.00%