CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Allowance for doubtful trade accounts receivable	$ 10,360	$ 10,271
Stockholders’ equity:
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	80,533,536	80,533,536
Common stock, shares outstanding (in shares)	63,389,496	63,223,003
Treasury stock, shares (in shares)	17,144,040	17,310,533