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INVESTMENTS IN UNCONSOLIDATED SUBSIDIARIES (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2016
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures [Abstract]                
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures, Investments in Low Income Housing Tax Credit Partnerships   $ 3,726   $ 3,726       $ 3,353
Trust preferred investments   2,792   2,792       2,792
Investments in affiliates   529   529       690
Other   54   54       54
Investment in unconsolidated subsidiaries   7,101   7,101       6,889
Other Commitment   2,700   2,700       $ 1,700
Estimated Affordable Housing Program Expense [Line Items]                
Amortization expense in pretax income   174 $ 259 630 $ 774      
Income tax credits and adjustments   $ 218 $ 292 $ 744 $ 877      
Scenario, Forecast [Member]                
Estimated Affordable Housing Program Expense [Line Items]                
Expected to be paid $ 100         $ 700 $ 1,900