Note 13 - Fair Value of Financial Instruments (Tables)

12 Months Ended

Mar. 31, 2023

Notes Tables

Fair Value, by Balance Sheet Grouping [Table Text Block]

	As of:
	March 31,				March 31,
	2023				2022
	Carrying		Estimated		Carrying		Estimated
	Amount		Fair Value		Amount		Fair Value
Long-term debt, including current portion	$	442,695	$	436,293	$	113,624	$	108,608