Represents the amount of loan secured by held for sale property.

No definition available.

Name:	rpi_AmountOfDebtSecuredByRealEstateHeldForSale
Namespace Prefix:	rpi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the agreed price for the sale of the real estate property.

+ References

No definition available.

+ Details

Name:	rpi_SaleOfRealEstatePropertyPrice
Namespace Prefix:	rpi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

Name:	us-gaap_AreaOfRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

A deposit made by a purchaser of real estate to evidence good faith. It is customary for a buyer to give the seller earnest money at the time a sales contract is signed. The earnest money generally is credited to the down payment at closing, which is applied at closing as a component of payment against the purchase price.

+ References

No definition available.

+ Details

Name:	us-gaap_EarnestMoneyDeposits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying amount as of the balance sheet date of investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.1(f))

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_RealEstateHeldforsale
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

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SUBSEQUENT EVENTS (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 Northridge Office Building	Dec. 31, 2012 Northridge Office Building	Nov. 15, 2013 Subsequent Event Northridge Office Building Board of Education	Oct. 15, 2013 Subsequent Event Northridge Office Building Board of Education sqft
Subsequent event
Area of real estate asset (in square feet)						37,864
Proceeds from sale of property						$ 5,280,000
Earnest money deposit					50,000	50,000
Real estate assets held for sale	19,058,347	25,299,875	3,184,558	3,200,919
Amount of loan secured by held for sale property			$ 2,422,533