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Commitments and Contingencies - Additional Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($) Customer	Jun. 30, 2020 USD ($) Customer	Jun. 30, 2021 USD ($) Customer	Jun. 30, 2020 USD ($) Customer
Commitments And Contingencies Disclosure [Abstract]
Data cost incurred	$ 2,108	$ 2,171	$ 4,230	$ 4,303
Total capital commitment under certain data licensing agreements	12,491		12,491
Decrease for collection customers activities	(900)
Loss contingency, concessions granted	$ 14	$ 342	$ 14	$ 342
Number Of Customers | Customer	5	152	5	152
Deferred amount percentage	50.00%		50.00%

X

- Definition

Data cost under certain data licensing agreements.

+ References

No definition available.

+ Details

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Namespace Prefix:	rdvt_
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Balance Type:	credit
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X

- Definition

Deferred amount percentage.

+ References

No definition available.

+ Details

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X

- Definition

Increase (Decrease ) for collection customers activities.

+ References

No definition available.

+ Details

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Namespace Prefix:	rdvt_
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X

- Definition

Number of customers.

+ References

No definition available.

+ Details

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Namespace Prefix:	rdvt_
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- References

No definition available.

+ Details

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X

- Definition

Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
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X

- Definition

The amount of imputed interest necessary to reduce (reconcile) the estimated aggregate undiscounted amount of the accrual for damages arising from third-party use of the entity's product(s) or process(es) to the present value recognized on the balance sheet (if the accrual qualifies for discounting).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 5.Y.Q1)
-URI http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751

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