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Nature of Operations and Significant Accounting Policies (Details) Investment in Subsidiary or Unconsolidated Afflilate (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Subsidiary or Equity Method Investee [Line Items]      
Ownership threshold to qualify for equity method accounting treatment, minimum 20.00%    
Ownership threshold to qualify for equity method accounting treatment, maximum 50.00%    
Net loss attributable to the noncontrolling interests $ 2,579,000 $ (4,740,000) $ 2,900,000
Noncontrolling interest in subsidiaries 5,271,000 7,850,000  
Equity in loss of unconsolidated affiliate    (5,293,000) (3,717,000)
Spigit
     
Subsidiary or Equity Method Investee [Line Items]      
Percent ownership of voting shares of unconsolidated affiliate 27.00% 30.00% 37.00%
Percentage of ownership after transaction 27.00% 30.00%  
Carrying value of equity method investment 0 0  
Equity in loss of unconsolidated affiliate 0 (5,300,000)  
Fish Springs Ranch, LLC
     
Subsidiary or Equity Method Investee [Line Items]      
Ownership percentage by noncontrolling owners   49.00%  
Noncontrolling interest in subsidiaries 0    
Restatement Adjustment | Reverse Loss Attributed to Noncontrolling Interest | Fish Springs Ranch, LLC
     
Subsidiary or Equity Method Investee [Line Items]      
Net loss attributable to the noncontrolling interests   $ (5,900,000)  
Agribusiness Operations
     
Subsidiary or Equity Method Investee [Line Items]      
Ownership percentage by noncontrolling owners   12.00%  
Northstar
     
Subsidiary or Equity Method Investee [Line Items]      
PICO's ownership percentage 88.00%