Investments in and Advances to Other Real Estate Partnerships (Details Textual) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Investments in and Advances to Other Real Estate Partnerships (Textual) [Abstract]
Real Estate and Other Assets Held for Sale, Accumulated Depreciation and Amortization	$ 20,690	$ 34,443
Other Real Estate Partnership [Member]
Investments in and Advances to Other Real Estate Partnerships (Textual) [Abstract]
Real Estate and Other Assets Held for Sale, Accumulated Depreciation and Amortization	$ 389	$ 4,970

The cumulative amount of depreciation for the 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.

No definition available.

Name:	frfi_RealEstateHeldForSaleAccumulatedDepreciationAndAmortization
Namespace Prefix:	frfi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant