XML 19 R31.htm IDEA: XBRL DOCUMENT v2.4.0.6

Subsequent Events (Details) (USD $)	3 Months Ended				6 Months Ended		1 Months Ended		1 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2011	Mar. 31, 2011	Jun. 30, 2012 sqft	Jun. 30, 2011 sqft	Jul. 31, 2012 Cash distribution declared	Jul. 05, 2012 First mortgage loan FSP Energy Tower I Corp.	Jul. 31, 2012 Repayment of mortgage loan FSP 50 South Tenth Street Corp.	Jul. 31, 2012 Property acquisition in Atlanta, Georgia sqft	Jul. 31, 2012 Advance on loan FSP Galleria North Corp. Wholly-owned subsidiary
Subsequent events
Cash dividend declared per share	$ 0.19	$ 0.19	$ 0.19	$ 0.19			$ 0.19
Loan amount	$ 207,000,000				$ 207,000,000			$ 33,000,000
Advance paid to related party pursuant to a Sponsored REIT Loan											1,000,000
Exit fee on sales of real estate assets									520,380
Proceeds received on repayment of related party loan receivable									106,200,000
Area of office property acquired in Atlanta, Georgia (in square foot)					7,052,592	6,747,815				387,000
Purchase price of property acquired in Atlanta, Georgia										$ 52,800,000

X

- Definition

Reflects the amount of advances paid to related parties pursuant to a Sponsored REIT Loan.

+ References

No definition available.

+ Details

Name:	fsp_LoansAndLeasesReceivableRelatedPartiesAdvancePayment
Namespace Prefix:	fsp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Reflects the maximum amount of loan due from related parties at the balance sheet date.

+ References

No definition available.

+ Details

Name:	fsp_LoansAndLeasesReceivableRelatedPartiesMaximumAmountOfLoan
Namespace Prefix:	fsp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Represents the fee charged on all amounts repaid under the loan.

+ References

No definition available.

+ Details

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Namespace Prefix:	fsp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Proceeds received on repayment of related party loan receivable.

+ References

No definition available.

+ Details

Name:	fsp_ProceedsFromRepaymentOfLoansAndLeasesReceivableRelatedParties
Namespace Prefix:	fsp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Represents the aggregate purchase price excluding closing costs and adjustments of real estate properties acquired by the entity during the period.

+ References

No definition available.

+ Details

Name:	fsp_RealEstateAggregatePurchasePrice
Namespace Prefix:	fsp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



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=6959260&loc=d3e187085-122770

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of square footage related to a real estate property.

+ References

No definition available.

+ Details

Name:	us-gaap_SquareFootageOfRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

X

- Details

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