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14. LF EQUITY INCOME FUND PORTFOLIO INVESTMENT (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |  |  |
Change in fair value of investment | $ 2,677 | $ 6,980 | $ 6,785 | $ 13,888
Loss on sale of investment |  |  | (2,762) | (7,232)
Net realized and unrealized gain (loss) on investment | 3,231 | 5,338 | 4,023 | 6,656
Trading Securites Lf Fund Public Securities [Member] |  |  |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |  |  |
Change in fair value of investment | (1,069) | 0 | (1,069) | 0
Loss on sale of investment | (6,110) | 0 | (6,110) | 0
Equity Securities Forward Contract Public [Member] |  |  |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |  |  |
Change in fair value of investment | 6,891 | 0 | 6,891 | 0
Equity Securities Forward Contract Private [Member] |  |  |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |  |  |
Change in fair value of investment | 74,662 | 0 | 74,662 | 0
Trading Securites Lf Fund Securities [Member] |  |  |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |  |  |
Net realized and unrealized gain (loss) on investment | $ 74,374 | $ 0 | $ 74,374 | $ 0

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