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transferred to acquire operating assets Asset Acquisition, Consideration Transferred Business Segments Segment Reporting Disclosure [Text Block] Schedule of Error Corrections and Prior Period Adjustment Restatement [Table] Schedule of Error Corrections and Prior Period Adjustment Restatement [Table] Net increase (decrease) in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Rail Products Rail Products [Member] Rail Products Litigation settlement amount, current Litigation Settlement, Amount Awarded to Other Party, Current Litigation Settlement, Amount Awarded to Other Party, Current Non-PEO NEO Non-PEO NEO [Member] Equity Component [Domain] Equity Component [Domain] Adjustment to Compensation: Adjustment to Compensation [Axis] Work-in-process Inventory, Work in Process, Net of Reserves Accounts receivable - net (Note 5) Accounts and Financing Receivable, after Allowance for Credit Loss, Current Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Basic weighted average shares outstanding (in shares) Denominator for basic earnings (loss) per common share (in shares) Weighted Average Number of Shares Outstanding, Basic Contract assets - net (Note 3) Balance as of December 31, 2023 Balance as of March 31, 2024 Contract with Customer, Asset, after Allowance for Credit Loss Entity Current Reporting Status Entity Current Reporting Status Operating income Operating income Segment Operating Income (Loss) Total segment operating income Operating Income (Loss) Debt Instrument, Redemption, Period Two Debt Instrument, Redemption, Period Two [Member] Total cost of sales Cost of Revenue Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Segments [Axis] Segments [Axis] Statement Statement [Line Items] Other comprehensive income, net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Revolving credit facility Line of credit facility, amount outstanding Long-Term Line of Credit Customer relationships Customer Relationships [Member] Noncontrolling Interest Noncontrolling Interest [Member]