BUSINESS COMBINATIONS - Summary of Acquired Identifiable Assets and Liabilities (Details) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
	Apr. 03, 2020	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Liabilities and equity:
Bargain purchase gain		$ (7,023)	$ 0	$ (7,023)
SWG
Purchase price:
Total purchase price	$ 47,858
Identifiable assets:
Cash and due from banks	29,247
Investments	89,737
Loans	392,292
Core deposit intangible	4,556
Personal and real property	18,558
Bank owned life insurance	6,963
Other assets	3,402
Total assets	544,755
Liabilities and equity:
Deposits	476,099
Borrowed funds	9,500
Other liabilities	3,461
Total liabilities	489,060
Net assets acquired	55,695
Consideration paid	47,858
Bargain purchase gain	(7,835)
SWG | As Initially Reported
Purchase price:
Total purchase price	47,859
Identifiable assets:
Cash and due from banks	29,247
Investments	89,737
Loans	392,292
Core deposit intangible	4,556
Personal and real property	18,558
Bank owned life insurance	6,963
Other assets	2,589
Total assets	543,942
Liabilities and equity:
Deposits	476,099
Borrowed funds	9,500
Other liabilities	3,461
Total liabilities	489,060
Net assets acquired	54,882
Consideration paid	47,859
Bargain purchase gain	(7,023)
SWG | Measurement Period Adjustments
Purchase price:
Total purchase price	(1)
Identifiable assets:
Cash and due from banks	0
Investments	0
Loans	0
Core deposit intangible	0
Personal and real property	0
Bank owned life insurance	0
Other assets	813
Total assets	813
Liabilities and equity:
Deposits	0
Borrowed funds	0
Other liabilities	0
Total liabilities	0
Net assets acquired	813
Consideration paid	(1)
Bargain purchase gain	$ 812