XML 53 R44.htm IDEA: XBRL DOCUMENT
v3.22.2.2

OTHER LONG-TERM LIABILITIES- Additional information (Details) - USD ($) | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
OTHER LONG-TERM LIABILITIES |  |  |
Current portion - preferred stock repurchase | $ 1,071,637 | $ 1,101,110 | $ 1,098,282

X
- Definition It represents information about current portion of preferred stock repurchase. + References No definition available. + Details
Name: | rvp_CurrentPortionOfPreferredStockRepurchase
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