CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Account receivable, allowances aggregating	$ 47,129	$ 42,209
Closure and post-closure liabilities, current portion	14,079	13,556
Remedial liabilities, current portion	$ 15,100	$ 13,358
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)	53,926,191	53,929,703
Common stock, outstanding shares (in shares)	53,926,191	53,929,703