XML 24 R50.htm IDEA: XBRL DOCUMENT v2.4.0.6

Retirement Plan (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Retirement Plan
Maximum employee compensation to be deferred per year	$ 16,500	$ 16,500	$ 16,500
Maximum employer matching contribution as a percentage of annual compensation	3.00%	3.00%	3.00%
Maximum employer matching contribution for each employee	200,000	200,000	200,000
Company's total contribution under 401 (k) plan	$ 131,000	$ 125,000	$ 115,000

X

- Definition

Represents the maximum employer matching contribution for each employee.

+ References

No definition available.

+ Details

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

X

- Definition

Represents the maximum employer matching contribution as a percentage of employee's salary.

+ References

No definition available.

+ Details

Name:	fsp_DefinedContributionPlanEmployerMaximumMatchingContributionPercentageOfSalary
Namespace Prefix:	fsp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the maximum employee compensation to be deferred per annum.

+ References

No definition available.

+ Details

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

X

- Details

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

X

- Definition

The amount of the cost recognized during the period for defined contribution plans.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 11

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 70

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942

+ Details

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