LOANS AND ALLOWANCE FOR LOAN LOSSES - Internal Risk Rating Summary (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	$ 1,415,362	$ 1,374,235
Loan balance	1,454,801	1,374,235
Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	39,439
SBA PPP
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	82,000
Commercial
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	1,141,114	1,063,828
Loan balance	1,141,114	1,063,828
Commercial | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	21,008	0
Commercial | Commercial business
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	523,891	540,882
Commercial | Commercial business | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	17,604
Commercial | Commercial real estate
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	423,122	411,770
Commercial | Commercial real estate | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	1,269
Commercial | Acquisition and development
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	112,126	111,176
Commercial | Acquisition and development | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	2,135
Commercial | SBA PPP
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	81,975
Residential
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	240,264	271,604
Loan balance	240,264	271,604
Residential | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	16,943	0
Home equity
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	30,828	35,106
Loan balance	30,828	35,106
Consumer
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	3,156	3,697
Loan balance	3,156	3,697
Consumer | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	1,488	0
Pass
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	1,285,163	1,330,351
Pass | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	31,558
Pass | Commercial
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	1,015,512	1,024,730
Pass | Commercial | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	15,145
Pass | Commercial | Commercial business
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	496,222	511,590
Pass | Commercial | Commercial business | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	12,263
Pass | Commercial | Commercial real estate
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	356,544	406,712
Pass | Commercial | Commercial real estate | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	982
Pass | Commercial | Acquisition and development
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	80,771	106,428
Pass | Commercial | Acquisition and development | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	1,900
Pass | Commercial | SBA PPP
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	81,975
Pass | Residential
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	236,250	267,367
Pass | Residential | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	15,157
Pass | Home equity
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	30,277	34,641
Pass | Consumer
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	3,124	3,613
Pass | Consumer | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	1,256
Special Mention
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	67,935	25,216
Special Mention | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	139
Special Mention | Commercial
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	66,574	22,831
Special Mention | Commercial | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	139
Special Mention | Commercial | Commercial business
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	9,529	17,398
Special Mention | Commercial | Commercial business | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	136
Special Mention | Commercial | Commercial real estate
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	32,044	3,564
Special Mention | Commercial | Commercial real estate | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	3
Special Mention | Commercial | Acquisition and development
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	25,001	1,869
Special Mention | Commercial | Acquisition and development | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	0
Special Mention | Commercial | SBA PPP
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	0
Special Mention | Residential
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	948	1,946
Special Mention | Residential | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	0
Special Mention | Home equity
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	381	383
Special Mention | Consumer
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	32	56
Special Mention | Consumer | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	0
Substandard
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	58,270	18,554
Substandard | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	2,273
Substandard | Commercial
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	55,230	16,267
Substandard | Commercial | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	608
Substandard | Commercial | Commercial business
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	17,045	11,894
Substandard | Commercial | Commercial business | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	345
Substandard | Commercial | Commercial real estate
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	34,001	1,494
Substandard | Commercial | Commercial real estate | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	263
Substandard | Commercial | Acquisition and development
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	4,184	2,879
Substandard | Commercial | Acquisition and development | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	0
Substandard | Commercial | SBA PPP
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	0
Substandard | Residential
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	2,896	2,177
Substandard | Residential | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	1,665
Substandard | Home equity
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	144	82
Substandard | Consumer
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	0	28
Substandard | Consumer | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	0
Doubtful
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	3,994	114
Doubtful | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	5,469
Doubtful | Commercial
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	3,798	0
Doubtful | Commercial | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	5,116
Doubtful | Commercial | Commercial business
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	1,095	0
Doubtful | Commercial | Commercial business | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	4,860
Doubtful | Commercial | Commercial real estate
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	533	0
Doubtful | Commercial | Commercial real estate | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	21
Doubtful | Commercial | Acquisition and development
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	2,170	0
Doubtful | Commercial | Acquisition and development | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	235
Doubtful | Commercial | SBA PPP
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	0
Doubtful | Residential
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	170	114
Doubtful | Residential | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	121
Doubtful | Home equity
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	26	0
Doubtful | Consumer
Classes of the loan portfolio summarized by credit quality indicators:
Total loans, excluding acquired	0	$ 0
Doubtful | Consumer | Purchased credit impaired loans
Classes of the loan portfolio summarized by credit quality indicators:
Loan balance	$ 232