PROPERTY AND EQUIPMENT - Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Property and Equipment [Abstract]
Property and equipment, gross	$ 33,215	$ 23,965
Less accumulated depreciation	(15,310)	(10,944)
Property and equipment, net	17,905	13,021
Computer software and equipment
Property and Equipment [Abstract]
Property and equipment, gross	$ 30,805	22,337
Computer software and equipment \| Minimum
Property and Equipment [Abstract]
Estimated useful lives	3 years
Computer software and equipment \| Maximum
Property and Equipment [Abstract]
Estimated useful lives	5 years
Office improvements
Property and Equipment [Abstract]
Property and equipment, gross	$ 1,575	1,122
Estimated useful lives	5 years
Furniture and fixtures
Property and Equipment [Abstract]
Property and equipment, gross	$ 835	$ 506
Estimated useful lives	7 years

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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