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LEASES (Tables) | 6 Months Ended
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Jun. 30, 2021
LEASES |
Schedule of assets and liabilities relating to leases included in the Condensed Balance Sheets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | June 30, 2021 |  | December 31, 2020
OPERATING LEASES |  | ​ |  |  | ​ |
Other assets | ​ | $ | 13,086 | ​ | $ | 38,892
Other accrued liabilities | ​ | $ | 13,086 | ​ | $ | 38,892
Other long-term liabilities | ​ |  | — | ​ |  | —
Total operating lease liabilities | ​ | $ | 13,086 | ​ | $ | 38,892
Schedule of future minimum payments under non-cancelable operating leases and financing leases | ​
​ | ​ | ​ | ​
Quarter ending June 30, 2021 |  | $ | 13,168
Less imputed interest | ​ |  | (82)
Total | ​ | $ | 13,086

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- Definition Tabular disclosure of assets and liabilities associated with the leases included in the Balance Sheets. + References No definition available. + Details
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Namespace Prefix: | rvp_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980 + Details
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