Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Price of a single share of a number of saleable stocks of a company.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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STOCK-BASED COMPENSATION - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for grant	1,499,056
Closing stock price of common stock	$ 22.76
Employee Stock Option [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Option term	10 years
Unrecognized compensation cost	$ 0
Total compensation cost	$ 0	$ 0	$ 0
Employee Stock Option [Member] \| Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Option term	10 years
Stock option vesting term	5 years
Restricted stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares granted	528,038
Total compensation cost	$ 6,900,000	$ 5,900,000	$ 4,600,000
Restricted stock [Member] \| Tranche One [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option vesting term	3 years
Restricted stock [Member] \| Tranche Two [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option vesting term	5 years
Performance Shares [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option vesting term	3 years
Shares granted	130,832
Restricted Stock Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost	$ 11,900,000
Weighted average period over which unrecognized compensation is expected to be recognized (in years)	1 year 6 months 14 days