Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) - USD ($) $ in Thousands	Jun. 30, 2021	Mar. 31, 2021
Statement of Financial Position [Abstract]
Allowance for doubtful trade receivables	$ 1,311	$ 1,177
Debt Issuance Costs, Current, Net	83	83
Debt Issuance Costs, Noncurrent, Net	$ 215	$ 236
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares issued	30,794,000	30,576,000
Common stock, shares outstanding	30,794,000	30,576,000