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Investments Investment Holdings Table (Details) - USD ($)
Mar. 31, 2020
Mar. 11, 2020
Dec. 31, 2019
Investment Holdings [Line Items]      
Equity Securities, FV-NI $ 4,607,000 $ 5,700 $ 4,376,000
Equity Method Investments 118,000   123,000
Long-term investments $ 4,725,000   $ 4,499,000