Supplemental cash flow information (Schedule of Supplemental cash flow) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Supplemental Cash Flow Information [Abstract]
Interest paid, net of interest capitalized	$ 45,048	$ 32,521	$ 37,046
Interest received	1,402	2,338	3,802
Net income taxes paid	71,229	43,398	26,699
Non-cash purchase of property, plant and equipment under finance lease	7,720	11,326	15,282
Non-cash right of use assets obtained in exchange for new lease obligations	$ 13,917	10,588	$ 29,117
Non-cash equity consideration in connection with Rouse acquisition		$ 1,459