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STOCKHOLDERS' EQUITY - Incentive Plans (Details) - USD ($)		3 Months Ended		9 Months Ended
	Jun. 08, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Jan. 29, 2020
Number of Shares
Granted (in shares)				0
Restricted stock
Unrecognized compensation expense stock option		$ 500,000		$ 500,000
General and administrative
Stock-based compensation
Compensation expense recorded		$ 500,000	$ 600,000	$ 1,600,000	$ 1,800,000
Stock options
Stock-based compensation
Percentage of awards vesting on the annual anniversary date of the grant				25.00%
Vesting period				4 years
Expiration term				7 years
Weighted average remaining vesting period				1 year 6 months
2020 Incentive Plan
Stock-based compensation
Aggregate number of shares available	1,800,000
Increase in shares available for issuance	300,000
2020 Incentive Plan | Common Stock
Stock-based compensation
Aggregate number of shares available							1,500,000
Maximum number of shares that remained reserved for issuance under the Plan		500,000		500,000		200,000
2020 Incentive Plan | Stock options
Stock-based compensation
Weighted average remaining vesting period					2 years
Number of Shares
Granted (in shares)					600,000
Restricted stock
Weighted average grant date fair value of the shares granted					$ 28.32
Unrecognized compensation expense stock option			$ 1,200,000		$ 1,200,000
2020 Incentive Plan | Stock options | Minimum
Weighted Average Exercise Price Per Share
Exercised (in dollars per share)					$ 18.91
2020 Incentive Plan | Stock options | Maximum
Weighted Average Exercise Price Per Share
Exercised (in dollars per share)					$ 37.83

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