Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Accounts receivable, allowance for doubtful accounts	$ 35,944	$ 35,465
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	74,035,516	73,785,631
Treasury stock, shares (in shares)	14,953,986	14,173,697