XML 23 R8.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Organization | 12 Months Ended
--- | ---
Dec. 31, 2024
Organization |
Organization | 1. Organization ​ Franklin Street Properties Corp. (“FSP Corp.” or the “Company”) holds, directly and indirectly, 100% of the interest in FSP Investments LLC, FSP Property Management LLC, FSP Holdings LLC and FSP Protective TRS Corp. FSP Property Management LLC provides asset management and property management services. The Company also has a non-controlling common stock interest in the corporation that is the sole member of FSP Monument Circle LLC, which corporation was organized to operate as a real estate investment trust (“Monument Circle” or the “Sponsored REIT”). ​ As of December 31, 2024, the Company owned and operated a portfolio of real estate consisting of 14 operating properties, and the Sponsored REIT, which was consolidated effective January 1, 2023. The Company may pursue, on a selective basis, the sale of its properties in order to take advantage of the value creation and demand for its properties, for geographic, property specific reasons or for other general corporate purposes.

X
- Definition The entire disclosure for the nature of an entity's business, major products or services, principal markets including location, and the relative importance of its operations in each business and the basis for the determination, including but not limited to, assets, revenues, or earnings. For an entity that has not commenced principal operations, disclosures about the risks and uncertainties related to the activities in which the entity is currently engaged and an understanding of what those activities are being directed toward. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Topic 275 -Publisher FASB -URI https://asc.fasb.org/275/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -SubTopic 10 -Topic 275 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-1 + Details
Name: | us-gaap_NatureOfOperations
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration