Line |
Label |
Object Class (Data type) |
Period Type |
Balance |
Report Element Name |
1 |
Investment [Table] |
Table |
|
|
gaap:InvestmentTable |
2 |
Legal Entity [Axis] |
Axis |
|
|
frm:LegalEntityAxis |
3 |
Consolidated Entity [Member] |
Member |
|
|
frm:ConsolidatedEntityMember |
4 |
Report Date [Axis] |
Axis |
|
|
frm:ReportDateAxis |
5 |
Reported as of March 18, 2011 [Member] |
Member |
|
|
company:ReportedAsOfMarch182011Member |
6 |
Reporting Scenario [Axis] |
Axis |
|
|
frm:ReportingScenarioAxis |
7 |
Actual [Member] |
Member |
|
|
frm:ActualMember |
8 |
Investment, Description [Axis] |
Axis |
|
|
gaap:InvestmentDescriptionAxis |
9 |
All Investments [Member] |
Member |
|
|
gaap:AllInvestmentsMember |
10 |
Treasury Bills, 3.4 %, 7/1/2010 [Member] |
Member |
|
|
company:TreasuryBills3.4712010Member |
11 |
Treasury Bills, 3.3 %, 7/1/2011 [Member] |
Member |
|
|
company:TreasuryBills3.3712011Member |
12 |
Investment, Term [Axis] |
Axis |
|
|
gaap:InvestmentTermAxis |
13 |
All Investment Terms [Member] |
Member |
|
|
gaap:AllInvestmentTermsMember |
14 |
Short-Term [Member] |
Member |
|
|
gaap:ShortTermMember |
15 |
Long-Term [Member] |
Member |
|
|
gaap:LongTermMember |
16 |
Investment, Country [Axis] |
Axis |
|
|
gaap:InvestmentCountryAxis |
17 |
All Investment Countries [Member] |
Member |
|
|
gaap:AllInvestmentCountriesMember |
18 |
USA [Member] |
Member |
|
|
gaap:USAMember |
19 |
Canada [Member] |
Member |
|
|
gaap:CanadaMember |
20 |
Investment, Type [Axis] |
Axis |
|
|
gaap:InvestmentTypeAxis |
21 |
All Investment Types [Member] |
Member |
|
|
gaap:AllInvestmentTypesMember |
22 |
Investment in Governmental Entities [Member] |
Member |
|
|
gaap:InvestmentInGovernmentalEntitiesMember |
23 |
Investment in Nongovernmental Entities [Member] |
Member |
|
|
gaap:InvestmentInNongovernmentalEntitiesMember |
24 |
Investment, Entity [Axis] |
Axis |
|
|
gaap:InvestmentEntityAxis |
25 |
All Investment Entities [Member] |
Member |
|
|
gaap:AllInvestmentEntitiesMember |
26 |
US Federal Government [Member] |
Member |
|
|
gaap:USFederalGovernmentMember |
27 |
State and Local Government [Member] |
Member |
|
|
gaap:StateAndLocalGovernmentMember |
28 |
Investment, Moody's Rating [Axis] |
Axis |
|
|
gaap:InvestmentMoodysRatingAxis |
29 |
All Moody's Ratings [Member] |
Member |
|
|
gaap:AllMoodysRatingsMember |
30 |
A+++ [Member] |
Member |
|
|
gaap:APlusPlusPlusMember |
31 |
A-- [Member] |
Member |
|
|
gaap:AMinusMinusMember |
32 |
Investment, S&P Rating [Axis] |
Axis |
|
|
gaap:InvestmentSPRatingAxis |
33 |
All S&P Ratings [Member] |
Member |
|
|
gaap:AllSPRatingsMember |
34 |
AAA [Member] |
Member |
|
|
gaap:AAAMember |
35 |
AA [Member] |
Member |
|
|
gaap:AAMember |
36 |
Investment [Line Items] |
LineItems |
|
|
gaap:InvestmentLineItems |
37 |
Investment [Hierarchy] |
Abstract |
|
|
gaap:InvestmentHierarchy |
38 |
Investment, Shares |
Concept (Shares) |
As Of |
|
gaap:InvestmentShares |
39 |
Investments, at Cost |
Concept (Monetary) |
As Of |
Debit |
gaap:InvestmentsAtCost |