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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3) (Litigation settlements, Hospira, USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Litigation settlements | Hospira
Litigation Settlements
Quarterly option payments received	$ 8
Period for option to negotiate licensing agreement	1 year

X

- Definition

Represents the period for option to negotiate a licensing agreement in accordance with settlement terms.

+ References

No definition available.

+ Details

Name:	rvp_LitigationSettlementsPeriodForOptionToNegotiateLicensingAgreement
Namespace Prefix:	rvp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the quarterly option payments received related to litigation settlements.

+ References

No definition available.

+ Details

Name:	rvp_LitigationSettlementsQuarterlyOptionPaymentReceived
Namespace Prefix:	rvp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_GainContingenciesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration