CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2023	Mar. 31, 2022
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 1,160	$ 1,368
Assets on lease, accumulated depreciation	223	780
Property and equipment, accumulated depreciation	6,624	5,405
Accumulated amortization	$ 4,191	$ 2,947
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)	3,026,495	3,026,495
Common stock, shares outstanding (in shares)	2,818,374	2,866,418
Treasury stock (in shares)	208,121	156,327
Treasury stock, average price per share (in dollars per share)	$ 19.62	$ 19.20