Note 6 - Derivative Financial Instruments (Tables)

12 Months Ended

Mar. 31, 2025

Notes Tables

Schedule of Derivative Instruments [Table Text Block]

	*Asset Derivatives*					*Liability Derivatives*
	*Balance Sheet*					*Balance Sheet*
Derivatives not designated as hedging instruments:	*Location*		*Fair Value*			*Location*		*Fair Value*
Hot-rolled coil steel contracts	Current portion of derivative assets		$	636		Current portion of derivative liability		$	287

	*Asset Derivatives*					*Liability Derivatives*
	*Balance Sheet*					*Balance Sheet*
Derivatives not designated as hedging instruments:	*Location*		*Fair Value*			*Location*		*Fair Value*
Hot-rolled coil steel contracts	Current portion of derivative assets		$	74		Current portion of derivative liability		$	1,686

Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]

					*Location of Loss*		*Pre- Tax*
		*Pre-Tax Gain (Loss)*			*Reclassified from*		*Loss Reclassified from*
		*Recognized in OCI*			*AOCI into Net Earnings*		*AOCI into Net Earnings*

For the fiscal year ended March 31, 2024
Hot-rolled coil steel contracts		$	—		*Sales*		$	(418	)
Total		$	—				$	(418	)

Derivative Instruments, Gain (Loss) [Table Text Block]

			*Gain Recognized in Earnings*
	*Location of Gain*		*for Fiscal Year Ended*
	*Recognized in Earnings*		*March 31, 2025*
Hot-rolled coil steel contracts	Gain on economic hedges of risk		$	7,598

			*Gain Recognized in Earnings*
	*Location of Gain*		*for Fiscal Year Ended*
	*Recognized in Earnings*		*March 31, 2024*
Hot-rolled coil steel contracts	Gain on economic hedges of risk		$	1,848

Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]

Notes Tables

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

		*Gain (Loss) on*
		*Derivatives*
Balance at March 31, 2023			(317	)
Other comprehensive loss, net of income, before reclassification			—
Total loss reclassified from AOCI (1)			317
Net current period other comprehensive income			317
Balance at March 31, 2024		$	—