LOANS AND ALLOWANCE FOR LOAN LOSSES - Loan modifications (Details) - Loan Restructuring Modification [Member]	3 Months Ended
	Sep. 30, 2020 USD ($) loan
Balance at June 30, 2020 | loan	490
Additional modifications granted for the three months ended September 30,2020 | loan	14
Section 4013 CARES Act modifications returned to normal payment status (a) | loan	(315)
Balance at September 30, 2020 | loan	189
Balance at June 30, 2020	$ 163,695,000
Additional modifications granted for the three months ended September 30,2020	3,425,000
Section 4013 CARES Act modifications returned to normal payment status (a)	(91,885,000)
Principal payments net of draws on active deferred loans for the three months ended September 30, 2020 (b)	(300,000)
Balance at September 30, 2020	$ 74,935,000
Percent of Total Section 4013 CARES Act modifications	100.00%
Percent of Total Section 4013 CARES Act modifications to Total Loans	10.64%
Subsequent modifications granted for active deferred loans, Count | loan	26
Subsequent modifications granted for active deferred loans	$ 17,390,000
Commercial and Industrial [Member]
Balance at June 30, 2020 | loan	66
Additional modifications granted for the three months ended September 30,2020 | loan	3
Section 4013 CARES Act modifications returned to normal payment status (a) | loan	(28)
Balance at September 30, 2020 | loan	41
Balance at June 30, 2020	$ 11,540,000
Additional modifications granted for the three months ended September 30,2020	654,000
Section 4013 CARES Act modifications returned to normal payment status (a)	(4,943,000)
Balance at September 30, 2020	$ 7,251,000
Percent of Total Section 4013 CARES Act modifications	9.68%
Percent of Total Section 4013 CARES Act modifications to Total Loans	1.03%
Subsequent modifications granted for active deferred loans, Count | loan	2
Subsequent modifications granted for active deferred loans	$ 170,000
Commercial Real Estate [Member]
Balance at June 30, 2020 | loan	325
Additional modifications granted for the three months ended September 30,2020 | loan	9
Section 4013 CARES Act modifications returned to normal payment status (a) | loan	(192)
Balance at September 30, 2020 | loan	142
Balance at June 30, 2020	$ 143,886,000
Additional modifications granted for the three months ended September 30,2020	2,130,000
Section 4013 CARES Act modifications returned to normal payment status (a)	(79,525,000)
Principal payments net of draws on active deferred loans for the three months ended September 30, 2020 (b)	(299,000)
Balance at September 30, 2020	$ 66,192,000
Percent of Total Section 4013 CARES Act modifications	88.33%
Percent of Total Section 4013 CARES Act modifications to Total Loans	9.40%
Subsequent modifications granted for active deferred loans, Count | loan	24
Subsequent modifications granted for active deferred loans	$ 17,220,000
Residential Real Estate [Member]
Balance at June 30, 2020 | loan	81
Additional modifications granted for the three months ended September 30,2020 | loan	2
Section 4013 CARES Act modifications returned to normal payment status (a) | loan	(77)
Balance at September 30, 2020 | loan	6
Balance at June 30, 2020	$ 8,143,000
Additional modifications granted for the three months ended September 30,2020	641,000
Section 4013 CARES Act modifications returned to normal payment status (a)	(7,291,000)
Principal payments net of draws on active deferred loans for the three months ended September 30, 2020 (b)	(1,000)
Balance at September 30, 2020	$ 1,492,000
Percent of Total Section 4013 CARES Act modifications	1.99%
Percent of Total Section 4013 CARES Act modifications to Total Loans	0.21%
Consumer [Member]
Balance at June 30, 2020 | loan	18
Section 4013 CARES Act modifications returned to normal payment status (a) | loan	(18)
Balance at September 30, 2020 | loan	0
Balance at June 30, 2020	$ 126,000
Section 4013 CARES Act modifications returned to normal payment status (a)	(126,000)
Balance at September 30, 2020	$ 0
Percent of Total Section 4013 CARES Act modifications	0.00%
Percent of Total Section 4013 CARES Act modifications to Total Loans	0.00%