XML 46 R40.htm IDEA: XBRL DOCUMENT v3.25.2

Basis of Presentation (Additional Information) (Details) $ in Thousands	Jun. 30, 2025 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Employee retention credit fund	$ 3,117

X

- Definition

Employee Retention Credit Fund

+ References

No definition available.

+ Details

Name:	rail_EmployeeRetentionCreditFund
Namespace Prefix:	rail_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

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