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BUSINESS ACQUISITONS - SCHEDULE OF EDGEWATER PURCHASE PRICE ALLOCATION (Details) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Jun. 24, 2018 | Oct. 27, 2017 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Cash consideration: |  |  |  |  |
Net cash consideration |  |  | $ 0 | $ 46,389 | $ 42,951
Fair value of Ribbon stock issued |  | $ 413,982 |  |  |
Intangible assets: |  |  |  |  |
Goodwill |  |  | 224,896 | $ 383,655 | $ 335,716
Edgewater |  |  |  |  |
Cash consideration: |  |  |  |  |
Cash paid to Edgewater Selling Stakeholders |  |  | 51,162 |  |
Less cash acquired |  |  | (4,773) |  |
Net cash consideration | $ 46,400 |  | 46,389 |  |
Unpaid cash consideration |  |  | 30,000 |  |
Fair value of Ribbon stock issued |  |  | 30,000 |  |
Fair value of equity awards assumed (see Note 16) | $ 700 |  | 747 |  |
Fair value of total consideration |  |  | 107,136 |  |
Fair value of assets acquired and liabilities assumed: |  |  |  |  |
Current assets, net of cash acquired |  |  | 16,098 |  |
Property and equipment |  |  | 245 |  |
Intangible assets: |  |  |  |  |
Goodwill |  |  | 48,053 |  |
Other noncurrent assets |  |  | 103 |  |
Deferred revenue |  |  | (2,749) |  |
Other current liabilities |  |  | (9,926) |  |
Deferred revenue, net of current |  |  | (669) |  |
Other long-term liabilities |  |  | (719) |  |
Assets acquired and liabilities assumed |  |  | 107,136 |  |
Developed technology | Edgewater |  |  |  |  |
Intangible assets: |  |  |  |  |
Finite-lived intangibles |  |  | 29,500 |  |
Customer relationships | Edgewater |  |  |  |  |
Intangible assets: |  |  |  |  |
Finite-lived intangibles |  |  | 26,100 |  |
Trade names | Edgewater |  |  |  |  |
Intangible assets: |  |  |  |  |
Finite-lived intangibles |  |  | $ 1,100 |  |

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