Consolidated Balance Sheets (Parentheticals) - $ / shares	Mar. 31, 2024	Dec. 31, 2023
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.1	$ 0.1
Common Stock, Shares Authorized (in shares)	2,810,000	2,810,000
Common Stock, Shares, Outstanding (in shares)	1,790,245	1,820,100
Treasury Stock, Common, Shares (in shares)	1,019,755	989,900