Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares	Jun. 30, 2023	Dec. 31, 2022
Common Stock, Par or Stated Value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized (in shares)	1,000,000,000	1,000,000,000
Common Stock, Shares, Issued (in shares)	781,693,135	781,306,164
Treasury Stock, Common, Shares (in shares)	8,655,082	8,655,082