Note 7 - Common Stock (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	May 24, 2022
Common Stock, Shares Authorized (in shares)	47,000,000	47,000,000
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.01	$ 0.01
Dividends, Common Stock, Cash	$ 0	$ 0
Treasury Stock, Value, Acquired, Cost Method	$ 181,000
The 2022 Stock Repurchase Program [Member]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in shares)			500,000
Treasury Stock, Shares, Acquired (in shares)	151,156
Treasury Stock, Value, Acquired, Cost Method	$ 187,427