XML 51 R39.htm IDEA: XBRL DOCUMENT
v3.24.1

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Accounts receivable (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 USD ($) item | Dec. 31, 2022 USD ($)
Accounts receivable |  |
Number of products consigned to the customers | item | 0 |
Allowance for doubtful accounts | $ | $ 890,541 | $ 675,208

X
- Definition Represents the number of products which have been consigned to the customers. + References No definition available. + Details
Name: | rvp_NumberOfProductsConsignedToCustomer
Namespace Prefix: | rvp_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Amount of allowance for credit loss on accounts receivable, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(4)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479344/326-20-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-4 + Details
Name: | us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant