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v3.20.1

SUMMARY OF SIGNIFICANT EVENTS AND ACCOUNTING POLICIES (Details) $ in Thousands |  | 1 Months Ended | 3 Months Ended |
--- | --- | --- | --- | ---
May 11, 2020 USD ($) | Mar. 31, 2020 USD ($) | Mar. 31, 2020 USD ($) segment | Mar. 31, 2019 USD ($) | Dec. 31, 2019 USD ($)
Basis of Presentation and Principles of Consolidation |  |  |  |  |
Number of operating segments | segment |  |  | 1 |  |
Allowance for doubtful accounts |  | $ 100 | $ 100 |  | $ 100
Restructuring |  |  |  |  |
Severance Costs |  |  |  | $ 11,300 |
Restructuring |  |  | $ 418 | $ 11,271 |
Reduction of discretionary cash incentives |  | $ 1,600 |  |  |
Subsequent event |  |  |  |  |
Restructuring |  |  |  |  |
Business exit costs | $ 1,300 |  |  |  |

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