Subsequent Events (Details) (USD $) In Millions, unless otherwise specified	24 Months Ended
Mar. 29, 2015	Apr. 10, 2013
Subsequent Events [Abstract]
Maximum Letters of Credit Available	$ 10.0	$ 7.5

The total amount of letters of credit available for issuing under secured credit facility.

No definition available.

Name:	ffex_MaximumLettersOfCreditAvailable
Namespace Prefix:	ffex_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration