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14. LF EQUITY INCOME FUND PORTFOLIO INVESTMENT (Tables)
9 Months Ended
Sep. 30, 2020
Investments, Debt and Equity Securities [Abstract]  
Changes in fair value of Acacias Investment
                    
   Three Months Ended   Nine Months Ended 
   September 30,   September 30, 
   2020   2019   2020   2019 
   (In thousands) 
Change in fair value of trading securities - LF Fund public securities  $3,403   $   $2,334   $ 
Change in fair value of equity securities derivative   10,651        17,542     
Change in fair value of equity securities - LF Fund private securities   80,896        80,896     
Change in fair value of equity securities forward contract   (74,662)            
Gain (loss) on sale of trading securities - LF Fund public securities   1,908        (4,202)    
Gain on sale of prepaid investment and derivative   2,845        2,845     
Net realized and unrealized gain on investment in LF Fund securities  $25,041   $   $99,415   $