XML 41 R31.htm IDEA: XBRL DOCUMENT v3.8.0.1

DIVIDENDS (Details) - USD ($)							9 Months Ended
	Oct. 20, 2017	Jul. 20, 2017	Apr. 27, 2017	Oct. 20, 2016	Jul. 28, 2016	Apr. 21, 2016	Sep. 30, 2017	Sep. 30, 2016
Dividends
Preferred dividends declared							$ 55,113	$ 55,113
Series I, Class B
Dividends
Preferred dividends declared	$ 12,313	$ 12,313	$ 12,313	$ 12,313	$ 12,313	$ 12,313
Series II, Class B
Dividends
Preferred dividends declared	$ 42,800	$ 42,800	$ 42,800	$ 42,800	$ 42,800	$ 42,800

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

X

- Definition

Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 405
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

+ Details

Name:	us-gaap_DividendsPreferredStockCash
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_StatementClassOfStockAxis=rvp_SeriesOneConvertibleClassBPreferredStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementClassOfStockAxis=rvp_SeriesTwoConvertibleClassBPreferredStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: