CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Trade receivables, allowance for doubtful receivables	$ 17,124	$ 20,843
Property plant and equipment, accumulated depreciation	$ 369,899	$ 362,029
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock authorized (in shares)	300,000	300,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	2,000,000,000	2,000,000,000
Common stock, issued (in shares)	144,443,628	139,494,741
Common stock, outstanding (in shares)	142,541,701	138,102,993
Treasury stock (in shares)	1,901,927	1,391,748
Long-term operating lease liabilities	$ 271,496	$ 274,460
Operating lease assets	$ 286,368	$ 289,504
Series A Junior Participating Preferred Stock
Preferred stock authorized (in shares)	150,000	150,000
Preferred stock, issued (in shares)	150,000