CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Account receivable, allowances aggregating	$ 42,342	$ 45,253
Closure and post-closure liabilities, current portion	11,425	13,205
Remedial liabilities, current portion	$ 10,334	$ 9,918
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized shares (in shares)	80,000,000	80,000,000
Common stock, issued shares (in shares)	54,102,982	54,064,797
Common stock, outstanding shares (in shares)	54,102,982	54,064,797