Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2020	Dec. 31, 2019
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, authorized (in shares)	10,000,000	10,000,000
Preferred stock, issued (in shares)	621	671
Preferred stock, outstanding (in shares)	621	671
Common stock, par value (in dollars per share)	$ 0.18	$ 0.18
Common stock, authorized (in shares)	175,000,000	175,000,000
Common stock, issued (in shares)	47,548,835	9,130,984
Common stock, outstanding (in shares)	47,548,835	9,130,984

Face amount or stated value per share of common stock.

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