OTHER LONG-TERM LIABILITIES (Details) - USD ($)	Sep. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
OTHER LONG-TERM LIABILITIES
Technology Investment Agreement (TIA)	$ 75,006,588		$ 68,955,664
Stock repurchase			1,040,666	$ 3,786,000
Total	75,006,588		69,996,330
Current portion - preferred stock repurchase	$ 1,084,795	$ 1,101,110	$ 1,098,282

It represents information about current portion of preferred stock repurchase.

No definition available.

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- Definition

The amount of Long-term deferred liability relating to preferred stock redemption.

+ References

No definition available.

+ Details

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- Definition

The amount of Long-term deferred liability relating to technology investment agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	rvp_
Data Type:	xbrli:monetaryItemType
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- References

No definition available.

+ Details

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- Definition

Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.24)
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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