Consolidated Balance Sheets (Unaudited) (Parentheticals) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Allowance for credit loss	$ 10,000	$ 10,000
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	76,632,279	75,881,840
Common stock, shares outstanding (in shares)	76,598,946	75,848,507
Treasury stock, shares (in shares)	33,333	33,333