Note 15 - Preferred Stock (Details Textual) - $ / shares $ / shares in Thousands	Sep. 30, 2021	Dec. 31, 2020
Preferred Stock, No Par Value (in dollars per share)	$ 0	$ 0
Preferred Stock, Shares Authorized (in shares)	1,000,000	1,000,000
Preferred Stock, Shares Issued, Total (in shares)	0	0