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SUMMARY OF SIGNIFICANT EVENTS AND ACCOUNTING POLICIES (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) segment	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Basis of Presentation and Principles of Consolidation
Number of operating segments | segment		1
Allowance for doubtful accounts		$ 200		$ 100
Restructuring
Severance Costs	$ 3,200		$ 15,100
Restructuring	$ 3,223	$ 2,580	15,148
Reduction of discretionary cash incentives			$ 1,600

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