Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity Stock Options and Net Income per Share - Employee Stock Purchase Plan (Details)

v2.4.1.9
Shareholders' Equity Stock Options and Net Income per Share - Employee Stock Purchase Plan (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Schedule of Employee Stock Purchase Plan (ESPP) Disclosures [Line Items]      
Purchase Period for Employee Stock Purchase Plan 6 months    
Share-based compensation $ 6,681us-gaap_ShareBasedCompensation $ 6,178us-gaap_ShareBasedCompensation $ 6,050us-gaap_ShareBasedCompensation
Employee Stock Purchase Plan [Member]      
Schedule of Employee Stock Purchase Plan (ESPP) Disclosures [Line Items]      
Number of shares authorized under the plan 403,792us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_AwardTypeAxis
= fwrd_EmployeeStockPurchasePlanMember
   
Common stock issued under employee stock purchase plan (in shares) 8,530us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
/ us-gaap_AwardTypeAxis
= fwrd_EmployeeStockPurchasePlanMember
8,800us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
/ us-gaap_AwardTypeAxis
= fwrd_EmployeeStockPurchasePlanMember
8,846us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
/ us-gaap_AwardTypeAxis
= fwrd_EmployeeStockPurchasePlanMember
Weighted average price of shares purchased (dollars per share) $ 41.51us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased
/ us-gaap_AwardTypeAxis
= fwrd_EmployeeStockPurchasePlanMember
$ 33.68us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased
/ us-gaap_AwardTypeAxis
= fwrd_EmployeeStockPurchasePlanMember
$ 29.26us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased
/ us-gaap_AwardTypeAxis
= fwrd_EmployeeStockPurchasePlanMember
Weighted Average Grant Date Fair Value $ 7.74us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= fwrd_EmployeeStockPurchasePlanMember
$ 7.52us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= fwrd_EmployeeStockPurchasePlanMember
$ 4.47us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= fwrd_EmployeeStockPurchasePlanMember
Share-based compensation $ 66us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= fwrd_EmployeeStockPurchasePlanMember
$ 66us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= fwrd_EmployeeStockPurchasePlanMember
$ 40us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= fwrd_EmployeeStockPurchasePlanMember