CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 1,420	$ 1,160
Assets on lease, accumulated depreciation	8	223
Property and equipment, accumulated depreciation	7,705	6,624
Intangible assets, accumulated amortization	$ 5,119	$ 4,191
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
Preferred stock, shares authorized (in shares)	2,000,000	2,000,000
Common stock, par value (in dollars per share)	$ 0.25	$ 0.25
Common stock, shares authorized (in shares)	4,000,000	4,000,000
Common stock, shares issued (in shares)	3,030,245	3,030,245
Common stock, shares outstanding (in shares)	2,775,163	2,818,374
Treasury stock (in shares)	256,850	208,121
Treasury stock average price (in dollars per share)	$ 19.31	$ 19.62