Note 2 - Income (Loss) Per Share (Details Textual) - shares	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total (in shares)	193,000	133,000	209,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)	1,171,000	0	1,171,000

Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited.

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