EQUITY AWARDS - Schedule of Nonvested Stock Option Activity (Details) - $ / shares	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Number of Shares
Outstanding at beginning of year (in shares)	214,680	251,120
Effect of 10% stock dividend (in shares)	23,218
Granted (in shares)	45,500	39,000
Vested (in shares)	(47,344)	(53,340)
Forfeited (in shares)	(9,020)	(32,600)
Balance (in shares)	227,034	204,180
Weighted-Average Exercise Price
Outstanding at beginning of year (in USD per share)	$ 4.46	$ 4.97
Granted (in USD per share)	5.82	3.86
Vested (in USD per share)	(5.72)	(6.07)
Forfeited (in USD per share)	(8.06)	(2.20)
Balance (in USD per share)	$ 5.11	$ 5.54