XML 51 R42.htm IDEA: XBRL DOCUMENT
v3.23.1

OTHER LONG-TERM LIABILITIES (Details) - USD ($) | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
OTHER LONG-TERM LIABILITIES |  |
Technology Investment Agreement (TIA) | $ 74,439,649 | $ 75,459,612

X
- Definition The amount of Long-term deferred liability relating to technology investment agreement. + References No definition available. + Details
Name: | rvp_LongTermDeferredLiabilityTechnologyInvestmentAgreement
Namespace Prefix: | rvp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_OtherLiabilitiesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration