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RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Millions | Apr. 29, 2019 | Oct. 27, 2017
--- | --- | ---
Notes payable | Promissory Note |  |
Related Party Transaction [Line Items] |  |
Repayment of notes payable | $ 24.7 |
GENBAND |  |
Related Party Transaction [Line Items] |  |
Promissory note issued to GENBAND equity holders |  | $ 22.5
Ownership percent threshold for promissory note issuance to equity holders |  | 5.00%

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