STOCK-BASED COMPENSATION (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Stock-based compensation
Stock-based compensation expense	$ 2,124	$ 1,344
Other than options granted (in shares)	67,600
Restricted stock
Stock-based compensation
Stock-based compensation expense	$ 1,155	533
Other than options granted (in shares)	28,220
Unrecognized compensation expense	$ 9,377
Weighted-average recognition period	2 years 7 months 6 days
Performance stock
Stock-based compensation
Stock-based compensation expense	$ 631	364
Other than options granted (in shares)	39,380
Earn out basis if all goals are met (as a percent)	200.00%
Unrecognized compensation expense	$ 6,760
Weighted-average recognition period	2 years 6 months
Stock appreciation rights
Stock-based compensation
Stock-based compensation expense	$ 332	430
Unrecognized compensation expense	$ 1,296
Weighted-average recognition period	1 year 2 months 12 days
Stock options
Stock-based compensation
Stock-based compensation expense	$ 6	$ 17
Unrecognized compensation expense	$ 43
Weighted-average recognition period	1 year 3 months 18 days

Percentage of third interim earn out which is a basis for vesting.

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- Definition

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

+ References

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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- Definition

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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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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