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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2014 item	Dec. 31, 2013 item	Dec. 31, 2012 item
Concentration risks
Number of significant customers	3rvp_NumberOfSignificantCustomers	2rvp_NumberOfSignificantCustomers	3rvp_NumberOfSignificantCustomers
Aggregate dollar amount of net sales to significant customers	$ 34,520,630us-gaap_SalesRevenueNet	$ 30,785,127us-gaap_SalesRevenueNet	$ 33,644,503us-gaap_SalesRevenueNet
Increase in allowance for doubtful accounts	27,300us-gaap_ProvisionForDoubtfulAccounts	50,000us-gaap_ProvisionForDoubtfulAccounts	107,246us-gaap_ProvisionForDoubtfulAccounts
Revenue recognition
Estimated contractual allowance	4,160,099rvp_AllowanceForContractualPricing	3,611,692rvp_AllowanceForContractualPricing
Change to reserve regarding non-contractual rebates	0rvp_IncreaseDecreaseInReserveForNonContractualRebates
Period for return of incorrect shipments	10 days
Number of times overstocking returns are limited	2rvp_RevenueRecognitionOverstockReturnLimitNumber
Period for return of product due to overstock	12 months
Maximum percentage of distributor's total purchase for the prior 12-month period	1.00%rvp_RevenueRecognitionMaximumPercentageOfDistributorsTotalPurchaseInPriorTwelveMonthPeriodForOverstockReturn
Customer Concentration Risk
Concentration risks
Increase in allowance for doubtful accounts	27,300us-gaap_ProvisionForDoubtfulAccounts / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember
Sales | Customer Concentration Risk
Concentration risks
Aggregate dollar amount of net sales to significant customers	$ 16,500,000us-gaap_SalesRevenueNet / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember	$ 9,300,000us-gaap_SalesRevenueNet / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember	$ 13,700,000us-gaap_SalesRevenueNet / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember
Concentration risk (as a percent)	47.90%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember	30.20%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember	40.60%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember
Product components | Supplier Concentration Risk
Concentration risks
Concentration risk (as a percent)	73.10%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_CostOfGoodsProductLineMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_SupplierConcentrationRiskMember	72.90%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_CostOfGoodsProductLineMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_SupplierConcentrationRiskMember	72.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_CostOfGoodsProductLineMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_SupplierConcentrationRiskMember

X

- Definition

For an unclassified balance sheet, a valuation allowance for payables due by the company that are expected to be not payable.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	instant

X

- Definition

This element represents change in the provision for the collectability of customers' non-contractual rebates.

+ References

No definition available.

+ Details

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Balance Type:	credit
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X

- Definition

Represents the number of significant customers.

+ References

No definition available.

+ Details

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X

- Definition

Represents the maximum percentage of distributor's total purchase in prior 12-month period for overstock return.

+ References

No definition available.

+ Details

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X

- Definition

The number of overstock returns available to a customer within a specified period of time.

+ References

No definition available.

+ Details

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X

- Definition

The period of time specified for overstock returns.

+ References

No definition available.

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X

- Definition

Represents the period for return of incorrect shipments, following arrival at the distributor's facility.

+ References

No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

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- Definition

Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

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