Investments - Number of Fixed Maturity Securities with Gross Unrealized Gains and Losses (Detail)	Sep. 30, 2013 Security	Dec. 31, 2012 Security
Amortized Cost And Fair Value Debt Securities [Abstract]
Gross Unrealized Losses Less than or equal to 12 months	18	13
Gross Unrealized Losses Greater than 12 months		1
Gross Unrealized Gains	85	108

Number of available for sale securities continuous unrealized loss position less than twelve months.

No definition available.

Name:	fac_NumberOfAvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonths
Namespace Prefix:	fac_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant