Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Allowance for receivables	$ 7,300	$ 7,967
Accumulated depreciation	153,272	143,831
Accumulated amortization	$ 9,984	$ 8,738
Common stock, stated value (in dollars per share)	$ 1	$ 1
Common stock, authorized (in shares)	1,000	1,000
Common stock, issued (in shares)	1,000	1,000
Common stock, outstanding (in shares)	1,000	1,000