Earnings Per Unit ("EPU") - Additional Information (Detail)	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Unit [Abstract]
Unvested restricted stock awards outstanding	489,381	750,051

Number of unvested restricted stock awards outstanding included in participating securities.

No definition available.

Name:	frfi_NumberOfUnvestedRestrictedStockAwardsOutstandingIncludedInParticipatingSecurities
Namespace Prefix:	frfi_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant