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REVENUE FROM CONTRACTS WITH CUSTOMERS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Receivables from customers	$ 737		$ 737		$ 640
Disaggregation of Revenue [Line Items]
Other service charges	265	$ 409	665	$ 1,189
Mortgage banking activities	623	735	1,743	2,049
Income from life insurance	479	533	1,505	1,101
Other income	44	56	188	272
Investment securities gains	2,328	29	4,731	891
Total noninterest income	8,782	5,492	21,888	16,699
Service charges on deposits
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,025	926	2,802	2,599
Loan swap referral fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	629	0	629	0
Trust and investment management income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,892	1,668	5,399	5,037
Brokerage income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	654	455	1,804	1,514
Merchant and bankcard fees (interchange income)
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	843	681	2,422	2,047
Noninterest income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 5,043	$ 3,730	$ 13,056	$ 11,197