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EMPLOYEE STOCK COMPENSATION - Nonvested Stock Option Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Number of Shares
Outstanding at beginning of year (in shares)	2,248	63,848	105,432
Vested (in shares)	(2,248)	(17,600)	(41,584)
Forfeited (in shares)	0	(44,000)	0
Outstanding at end of year (in shares)	0	2,248	63,848
Weighted-Average Exercise Price per Share
Outstanding at beginning of year (in dollars per share)	$ 13.75	$ 13.30	$ 13.31
Vested (in dollars per share)	13.75	13.26	13.32
Forfeited (in dollars per share)	0	13.29	0
Outstanding at end of year (in dollars per share)	$ 0	$ 13.75	$ 13.30