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OTHER DEFERRED ASSETS (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Sep. 30, 2019
Other Deferred Assets [Abstract]      
Investment in CoBank $ 4,374 $ 3,968  
Goodwill 623 0 $ 0
Other 331 289  
Other deferred assets $ 5,328 $ 4,257