XML 59 R49.htm IDEA: XBRL DOCUMENT v3.24.1.u1

Product Warranties (Additional Information) (Details)	3 Months Ended
	Mar. 31, 2024
Maximum
Product Warranties
Warranty period	5 years

X

- Definition

Length of warranty period for new products produced.

+ References

No definition available.

+ Details

Name:	rail_WarrantyPeriod
Namespace Prefix:	rail_
Data Type:	xbrli:durationItemType
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_ProductInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: