2.2.0.25falsefalse40701 - Disclosure - Subsequent Events (Narrative) (Details)truefalseIn Thousands, except Per Share datafalse1falsefalsefalsefalse4/1/2011 - 4/19/2011 Duration_4_1_2011_To_4_19_2011http://www.sec.gov/CIK0000815556duration2011-04-01T00:00:002011-04-19T00:00:00Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli02falsefalseUSDfalsefalse4/7/2011 - 4/11/2011 USD ($) / shares $Duration_4_7_2011_To_4_11_2011http://www.sec.gov/CIK0000815556duration2011-04-07T00:00:002011-04-11T00:00:00Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$3falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $Duration_1_1_2011_To_3_31_2011http://www.sec.gov/CIK0000815556duration2011-01-01T00:00:002011-03-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0fast_SubsequentEventsAbstractfastfalsenadurationSubsequent Events [Abstract]falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringSubsequent Events [Abstract]falsefalseSubsequent Events3false0us-gaap_DividendsPayableDateDeclaredDayMonthAndYearus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsetruefalsefalse2falsefalsefalse00falsefalsetruefalsefalse3falsefalsefalse002011-04-112011-04-11falsefalsetruefalsefalseOtherxbrli:dateItemTypedateThe day, month and year (YYYY-MM-DD) that the dividend to be paid was declared.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 32 falsefalseDividends declared date4false0us-gaap_CommonStockDividendsPerShareDeclaredus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse0.260.26falsetruefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseEPSus-types:perShareItemTypedecimalAggregate dividends declared during the period for each share of common stock outstanding.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 falsetrueDividends declared per share5false0fast_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsSubsequentToPeriodfastfalsenadurationThe quantity of shares issuable on stock options awarded under the plan subsequent to the reporting period.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse200000200falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseSharesxbrli:sharesItemTypesharesThe quantity of shares issuable on stock options awarded under the plan subsequent to the reporting period.No authoritative reference available.falsefalseShares granted34Subsequent Events (Narrative) (Details) (USD $)UnKnownThousandsNoRoundingUnKnownfalsetrue