Consolidated Condensed Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares	Jun. 30, 2023	Dec. 31, 2022
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized (in shares)	2,000,000	2,000,000
Preferred Stock, Shares Issued (in shares)	0	0
Preferred Stock, Shares Outstanding, Ending Balance (in shares)	0	0
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized (in shares)	192,000,000	192,000,000
Common Stock, Shares, Outstanding (in shares)	81,301,468	81,115,132
Common Stock, Shares, Issued (in shares)	81,301,468	81,115,132