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INVESTMENTS IN UNCONSOLIDATED SUBSIDIARIES (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
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 $ 12,267   $ 12,267         $ 3,608
Trust preferred investments 2,792   2,792         2,792
Investments in affiliates 170   170         634
Other 54   54         54
Investment in unconsolidated subsidiaries 15,283   15,283         7,088
Other Commitment 9,500   9,500         $ 2,600
Estimated Affordable Housing Program Expense [Line Items]                
Amortization expense in pretax income 114 $ 174 341 $ 630        
Income tax credits and adjustments $ 152 $ 218 $ 457 $ 744        
Scenario, Forecast [Member]                
Estimated Affordable Housing Program Expense [Line Items]                
Expected to be paid         $ 3,600 $ 4,000 $ 1,900