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NOTES PAYABLE TO BANKS (Detail Textuals 1) (Revolving credit facility, Option 2, Eurodollar Borrowings) | 6 Months Ended
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Jun. 30, 2013
Line of Credit Facility [Line Items] |
Description of reference rate basis | Adjusted LIBOR
Minimum |
Line of Credit Facility [Line Items] |
Fees on unused portion of facility | 1.25%
Maximum |
Line of Credit Facility [Line Items] |
Fees on unused portion of facility | 2.25%

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- Definition It indicates as percentage range of line of credit facility minimum based on quarterly debt covenant calculation. + References No definition available. + Details
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Namespace Prefix: | res_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityInterestRateDescription
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration