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Description of Business and Basis of Presentation (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2020
Segment Reporting Information [Line Items]
Number of principal reporting segments	2	3	2

X

- Definition

The number of reporting segments for an entity.

+ References

No definition available.

+ Details

Name:	fwrd_NumberOfPrincipalReportingSegments
Namespace Prefix:	fwrd_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration