CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Trade accounts receivable, allowance for credit loss	$ 6,700	$ 6,803
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	400,000,000	400,000,000
Common stock, shares issued (in shares)	175,112,496	175,112,496
Common stock, shares outstanding (in shares)	110,410,229	110,057,027
Treasury stock, shares (in shares)	64,702,267	65,055,469