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Commitments and Contingencies (Details) | Jun. 16, 2020 USD ($)
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Commitments and Contingencies Disclosure [Abstract] |
Damages sought per violation | $ 5,000

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- Definition Loss Contingency, Damages Sought, Value, Per Violation + References No definition available. + Details
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Namespace Prefix: | rng_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration