Investment in Leases - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 29, 2012	Dec. 30, 2011
Leases Disclosure [Line Items]
Written-off of investment in direct financing leases	$ 3,336	$ 3,336

Capital Leases In vestment In Direct Financing Leases Written Off

No definition available.

Name:	fn_CapitalLeasesInVestmentInDirectFinancingLeasesWrittenOff
Namespace Prefix:	fn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant