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

Carrying amount of the insurance proceeds but not subject to utilization and reported as liability.

No definition available.

Name:	rvp_InsuranceProceedsNotSubjectToUtilization
Namespace Prefix:	rvp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents information pertaining to number of buildings damaged due to storm.

No definition available.

Name:	rvp_NumberOfBuildingsDamageDueToStorm
Namespace Prefix:	rvp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

The repair expenses incurred during the period due to the storm damage and funded by insurance proceeds.

No definition available.

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

- References

No definition available.

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

Amount of insurance proceeds for an event or transaction that is unusual in nature or infrequent in occurrence, or both.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64828382&loc=d3e15138-107781