STOCKHOLDERS’ EQUITY - 2018 Equity Incentive Plan (Details) - shares	12 Months Ended
	Dec. 31, 2021	May 18, 2021	May 17, 2021	May 14, 2021	Dec. 31, 2020	May 15, 2020	May 09, 2019	May 09, 2018
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	200,000,000	200,000,000	100,000,000		100,000,000
2018 Equity Incentive Plan
Class of Stock [Line Items]
Common stock, shares authorized (in shares)								1,800,000
Shares remaining available for issuance under the plan (in shares)								1,600,000
Expiration Term	10 years
Vesting Term	4 years
Increase in authorized shares issuable (in shares)				3,200,000		2,400,000	2,000,000