SHARE-BASED COMPENSATION PLANS - Narrative (Details)	1 Months Ended			12 Months Ended
	Jun. 30, 2021 shares	Jun. 30, 2020 shares	Jan. 31, 2020 shares	Dec. 31, 2021 USD ($) plan shares	Dec. 31, 2020 USD ($) shares
Share-based Goods and Nonemployee Services Transaction [Line Items]
Number of share-based compensation plans | plan				5
Proceeds from exercise of stock options | $				$ 0	$ 12,000
Proceeds from exercise of stock options, less than amount | $					100,000
Compensation cost not yet recognized | $				$ 3,200,000
Period of recognition (in years)				1 year 6 months 7 days
Aggregate fair value of options and restricted shares vesting | $				$ 4,300,000	$ 4,800,000
2019 Equity Incentive Plan
Share-based Goods and Nonemployee Services Transaction [Line Items]
Number of shares authorized (in shares)				250,000
Additional authorized shares approved (in shares)	500,000	500,000	600,000
Options
Share-based Goods and Nonemployee Services Transaction [Line Items]
Expiration period				10 years
Employee Stock | 2014 Employee Stock Purchase Plan
Share-based Goods and Nonemployee Services Transaction [Line Items]
Number of shares authorized (in shares)				55,000
ESPP common stock discount				15.00%
Number of shares purchased by employees under ESPP (in shares)					14,975
Shares available for issuance under ESPP (in shares)				18,488
Minimum | Options
Share-based Goods and Nonemployee Services Transaction [Line Items]
Vesting period				2 years
Maximum | 2019 Equity Incentive Plan
Share-based Goods and Nonemployee Services Transaction [Line Items]
Number of shares authorized (in shares)				600,540
Maximum | Options
Share-based Goods and Nonemployee Services Transaction [Line Items]
Vesting period				4 years