Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Condensed Consolidated Balance Sheet Parenthetical [Abstract]
Allowance for doubtful accounts	$ 337	$ 45
Debt payable, current portion, net of unamortized debt issuance costs of $83 and $0	83	0
Debt payable, non-current, net of unamortized debt issuance costs of $256 and $230	$ 256	$ 230
Common stock, par value	$ 0	$ 0
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares issued	30,330,000	29,781,000
Common stock, shares outstanding	30,330,000	29,781,000