Note 1 - Organization and Operations (Details Textual) $ / shares in Units, $ in Millions			3 Months Ended
	Aug. 28, 2023 $ / shares shares	Jul. 25, 2023	Sep. 30, 2023 shares	Dec. 31, 2024 USD ($) $ / shares shares	Dec. 31, 2023 $ / shares shares	May 16, 2023 shares	May 15, 2023 shares
Common Stock, Par or Stated Value Per Share | $ / shares				$ 0.01	$ 0.01
Common Class A [Member]
Additional Share Issued for Every Two Shares of Common Stock	1
Common Stock, Par or Stated Value Per Share | $ / shares	$ 0.01
Common Stock, Shares Authorized				105,000,000	105,000,000	105,000,000	60,000,000
Treasury Stock, Shares, Retired			3,052,899
Common Class B [Member]
Common Stock, Par or Stated Value Per Share | $ / shares	$ 0.01
Common Stock, Shares Authorized				35,000,000	35,000,000	35,000,000	20,000,000
Treasury Stock, Shares, Retired			1,445,515
Stock Split From [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio		3
Stock Split To [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio		2
Deposits for Restrictions Related to Captive Insurance Company [Member]
Restricted Cash and Cash Equivalents, Current | $				$ 5.1