Supplemental Cash Flow Information - Change in Certain Working Capital Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Supplemental Cash Flow Elements [Abstract]
Accounts and notes receivable	$ (20,630)	$ (21,389)	$ (1,765)
Income taxes receivable/payable, net	4,122	(13,700)	9,007
Accounts payable	(1,550)	(2,586)	5,509
Accrued employee compensation and benefits	(1,033)	5,979	5,950
Other accrued liabilities	(6,406)	(8,161)	9,834
Other, net	(10,368)	(3,933)	708
Total	$ (35,865)	$ (43,790)	$ 29,243