BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($) term	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jan. 01, 2019 USD ($)
Defined Contribution 401(k) Plan
Expense recorded for discretionary amounts contributed		$ 900	$ 1,200	$ 1,200
Recently Adopted Accounting Pronouncements
Right-to-use assets		29,074	0		$ 42,100
Lease obligation liabilities					45,500
Lease obligation liabilities, current		11,398			16,700
Lease obligation liabilities, noncurrent		$ 19,707	0		28,800
Reduction accrued rent and lease incentives, effect of adopting accounting standard					$ 3,400
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 | Maximum
Premises and Equipment, Net
Estimated useful lives		10 years
Lenders One
Principles of Consolidation
Number of agreement terms | term		3
Total assets		$ 1,600	2,700
Total liabilities		$ 300	$ 1,300
Pointillist, Inc.
Principles of Consolidation
Contributions for the creation of Pointillist	$ 8,500