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EMPLOYEE BENEFITS - Narrative (Details) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Employee stock ownership plan, maximum employer contribution as a percentage of participant's qualified compensation	5.00%
Employee stock ownership plan, total contributions accrued or paid	$ 737	$ 692
Employee stock ownership plan, shares held under plan (in shares)	1,304,471
Employee stock ownership plan, unallocated shares (in shares)	0
Cash surrender value of life insurance	$ 36,367		$ 35,510
Bonus expense	2,153	728
Executive Incentive Retirement Plan | Postretirement Life Insurance | Nonqualified Plan | Unfunded Plan
Defined Benefit Plan Disclosure [Line Items]
Cash surrender value of life insurance	36,367		35,510
Plan cost	471	$ 400	592
Plan obligation	$ 4,781		$ 4,383

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Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

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Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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Amount of cost (reversal of cost) for other postretirement benefits. Excludes pension benefits.

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