Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Accounts receivable, allowance for doubtful accounts	$ 34,546	$ 33,925
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)	73,608,578	73,195,055
Treasury stock, shares (in shares)	13,446,797	13,057,298