Note 9 - Derivative Financial Instruments (Tables)

6 Months Ended

Sep. 30, 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	$	990	Current portion of derivative liability	$	142

	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

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

		Gain Recognized in Earnings
	Location of Gain	for the Three Months Ended
	Recognized in Earnings	September 30, 2025
Hot-rolled coil steel contracts	Gain on economic hedges of risk	$	851

		Gain Recognized in Earnings
	Location of Gain	for the Six Months Ended
	Recognized in Earnings	September 30, 2025
Hot-rolled coil steel contracts	Gain on economic hedges of risk	$	1,127

		Gain Recognized in Earnings
	Location of Gain	for the Three Months Ended
	Recognized in Earnings	September 30, 2024
Hot-rolled coil steel contracts	Gain on economic hedges of risk	$	194

		Gain Recognized in Earnings
	Location of Gain	for the Six Months Ended
	Recognized in Earnings	September 30, 2024
Hot-rolled coil steel contracts	Gain on economic hedges of risk	$	5,569

Derivatives Not Designated as Hedging Instruments [Table Text Block]

	Notional Amount			Maturity Date
Hot-rolled coil steel contracts	$	(28,108	)	October 2025 - December 2026

	Notional Amount			Maturity Date
Hot-rolled coil steel contracts	$	(9,522	)	April 2025 - December 2025