REVENUE FROM CONTRACTS WITH CUSTOMERS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenue from External Customer [Line Items]
In-scope other operating income	$ 5,791	$ 6,779	$ 17,554	$ 19,066
Out-of-scope other operating income	5,772	3,487	13,587	12,967
Total other operating income	11,563	10,266	31,141	32,033
Loan placement fees
Revenue from External Customer [Line Items]
In-scope other operating income	235	230	653	486
Service charges on deposit accounts
Revenue from External Customer [Line Items]
In-scope other operating income	1,475	2,125	4,674	6,247
Other service charges and fees
Revenue from External Customer [Line Items]
In-scope other operating income	2,932	3,281	8,517	9,096
Income from fiduciary activities
Revenue from External Customer [Line Items]
In-scope other operating income	1,149	1,126	3,716	3,220
Net gain (loss) on sales of foreclosed assets
Revenue from External Customer [Line Items]
In-scope other operating income	$ 0	$ 17	$ (6)	$ 17