Selling, General and Administrative Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Selling, General and Administrative Expenses
Selling, general and administrative expenses	$ 199,194	$ 132,168	$ 159,070
Allocated share-based compensation expense	13,274	(46,684)	(22,697)
Stock-based compensation	13,274	(46,684)	(22,697)
Operating Segments
Selling, General and Administrative Expenses
Selling, general and administrative expenses	131,619	129,335	129,090
Corporate
Selling, General and Administrative Expenses
Selling, general and administrative expenses	67,575	$ 2,833	$ 29,980
Allocated share-based compensation expense	$ 13,300