PROPERTY AND EQUIPMENT, Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Property and Equipment [Abstract]
Property and equipment, gross	$ 21,355	$ 15,500
Less accumulated depreciation	(8,073)	(5,107)
Property and equipment, net	13,282	10,393
Computer software and equipment
Property and Equipment [Abstract]
Property and equipment, gross	$ 19,630	14,114
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	$ 1,225	989
Estimated useful lives	5 years
Furniture and fixtures
Property and Equipment [Abstract]
Property and equipment, gross	$ 500	$ 397
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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-Name Accounting Standards Codification
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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Section 50
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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 210
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
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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.

+ References

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