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ACQUISITIONS - Narrative (Details) - USD ($) $ in Millions |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Jul. 17, 2019 | Oct. 29, 2018 | Apr. 12, 2018 | Mar. 31, 2021
Wavecell Pte. Ltd. |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business combination, consideration transferred | $ 117.1 |  |  |
Payments to acquire businesses, gross | 72.8 |  |  |
Business combination, consideration transferred, equity interests issued and issuable | 44.3 |  |  |
Business combination, acquisition related costs | $ 1.9 |  |  |
Developed technology | MarianaIQ |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Useful life (in Years) |  |  | 2 years |
Finite-lived intangible assets, remaining amortization period |  |  | 2 years |
Developed technology | Jitsi |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Useful life (in Years) |  | 2 years |  |
Finite-lived intangible assets, remaining amortization period |  | 2 years |  |
Developed technology | Wavecell Pte. Ltd. |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Useful life (in Years) | 7 years |  |  |
Time-Based Restricted Stock Awards | Wavecell Pte. Ltd. |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business combination, consideration transferred, equity interests issued and issuable | $ 13.2 |  |  |
Performance-Based Restricted Stock Awards | Wavecell Pte. Ltd. |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business combination, consideration transferred, equity interests issued and issuable | $ 6.6 |  |  |
Vesting period | 3 years |  |  |
Unamortized stock-based compensation expense |  |  |  | $ 8.5
Weighted average period of recognition for unrecognized compensation expense |  |  |  | 1 year 3 months 18 days
Employee Stock | Employee Stock Purchase Plan |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Unamortized stock-based compensation expense |  |  |  | $ 2.5
Weighted average period of recognition for unrecognized compensation expense |  |  |  | 4 months 24 days

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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460 + Details
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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477 + Details
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