BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) term	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Principles of Consolidation
Total assets	$ 265,685	$ 394,256
Defined Contribution 401(k) Plan
Expense recorded for discretionary amounts contributed	$ 600	$ 900	$ 1,200
Pointillist, Inc.
Principles of Consolidation
Noncontrolling ownership percentage		12.10%
Variable Interest Entity, Primary Beneficiary
Principles of Consolidation
Number of agreement terms | term	3
Agreement term	5 years
Total assets	$ 2,300	$ 1,600
Total liabilities	$ 100	300
Minimum
Intangible Assets, Net
Estimated useful life	4 years
Maximum
Intangible Assets, Net
Estimated useful life	20 years
Furniture and fixtures
Premises and Equipment, Net
Estimated useful lives	5 years
Office equipment
Premises and Equipment, Net
Estimated useful lives	5 years
Computer hardware | Minimum
Premises and Equipment, Net
Estimated useful lives	3 years
Computer hardware | Maximum
Premises and Equipment, Net
Estimated useful lives	5 years
Computer software | Minimum
Premises and Equipment, Net
Estimated useful lives	3 years
Computer software | Maximum
Premises and Equipment, Net
Estimated useful lives	7 years
Leasehold improvements
Premises and Equipment, Net
Estimated useful lives	10 years
Pointillist, Inc.
Principles of Consolidation
Contributions for the creation of Pointillist		$ 8,500