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INVESTMENTS IN LOW-INCOME HOUSING PARTNERSHIPS (Narrative) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2018
USD ($)
Partnership
Dec. 31, 2017
USD ($)
Real Estate Partnership Investment Subsidiaries, Net Income (Loss) before Tax [Abstract]    
Number of limited partnerships in low-income properties | Partnership 3  
Investments in low-income housing partnerships | $ $ 1,871 $ 2,446