Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Cash Flows [Abstract]
Cash of discontinued operations		$ 0	$ 0	$ 120,861
Supplemental Cash Flow Information
Cash paid for income taxes	$ 86,460	110,808	61,126
Cash paid for interest	$ 37,667	$ 41,834	$ 8,764