Note H - Derivative Financial Instruments (Tables)

6 Months Ended

Sep. 30, 2023

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	$	692	Current portion of derivative liability	$	400

	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	$	536	Current portion of derivative liability	$	2,212

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

	Pre-Tax Gain Recognized in OCI		Location of Loss Reclassified from AOCI into Net Earnings	Pre- Tax Loss Reclassified from AOCI into Net Earnings
For the three months ended September 30, 2023:
Hot-rolled coil steel contracts	$	—	Sales	$	—
Total	$	—		$	—
For the three months ended September 30, 2022:
Hot-rolled coil steel contracts	$	590	Sales	$	(1,490	)
Total	$	590		$	(1,490	)
For the six months ended September 30, 2023:
Hot-rolled coil steel contracts	$	—	Sales	$	(418	)
Total	$	—		$	(418	)
For the six months ended September 30, 2022:
Hot-rolled coil steel contracts	$	9,424	Sales	$	(2,117	)
Total	$	9,424		$	(2,117	)

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

		Gain Recognized in Earnings
	Location of Gain	for the Three Months Ended
	Recognized in Earnings	September 30, 2023
Hot-rolled coil steel contracts	Gain on economic hedges of risk	$	4,402

		Gain Recognized in Earnings
	Location of Gain	for the Six Months Ended
	Recognized in Earnings	September 30, 2023
Hot-rolled coil steel contracts	Gain on economic hedges of risk	$	4,832

		Gain Recognized in Earnings
	Location of Gain	for the Three Months Ended
	Recognized in Earnings	September 30, 2022
Hot-rolled coil steel contracts	Gain on economic hedges of risk	$	3,749

		Gain Recognized in Earnings
	Location of Gain	for the Six Months Ended
	Recognized in Earnings	September 30, 2022
Hot-rolled coil steel contracts	Gain on economic hedges of risk	$	6,504

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 income, net of loss, before reclassification		—
Total loss reclassified from AOCI (1)		317
Net current period other comprehensive income		317
Balance at September 30, 2023	$	—

	Gain (Loss) on
	Derivatives
Balance at March 31, 2022	$	(10,269	)
Other comprehensive income, net of loss, before reclassification		7,147
Total loss reclassified from AOCI (1)		1,606
Net current period other comprehensive income		8,753
Balance at September 30, 2022	$	(1,516	)