Contingencies (Activity in Accruals for MSA and Tobacco Litigation Schedule) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Loss Contingency Accrual [Roll Forward]
Current liabilities, beginning balance	$ 12,645	$ 19,851
Expenses	38,142	33,538
NPM Settlement adjustment	(595)	33
Change in MSA obligations capitalized as inventory	147	189
Payments	(250)	(3,891)
Interest on withholding	12	63
Current liabilities, ending balance	50,351	54,049
Noncurrent liabilities, beginning balance	41,319	49,770
Expenses	0	0
NPM Settlement adjustment	(2,895)	(928)
Payments	0
Reclassification to/(from) non-current liabilities	250	4,266
Interest on withholding	514	670
Noncurrent liabilities, ending balance	38,688	45,246
Settled Litigation
Loss Contingency Accrual [Roll Forward]
Current liabilities, beginning balance	12,385	16,192
Expenses	38,142	31,928
NPM Settlement adjustment	(595)	33
Change in MSA obligations capitalized as inventory	147	189
Payments	0
Interest on withholding	0
Current liabilities, ending balance	50,111	48,342
Noncurrent liabilities, beginning balance	21,479	22,257
Expenses	0	0
NPM Settlement adjustment	(2,895)	(928)
Payments	0
Reclassification to/(from) non-current liabilities	32
Interest on withholding	0	0
Noncurrent liabilities, ending balance	18,552	21,329
Pending Litigation
Loss Contingency Accrual [Roll Forward]
Current liabilities, beginning balance	260	3,659
Expenses	0	1,610
NPM Settlement adjustment	0	0
Change in MSA obligations capitalized as inventory	0	0
Payments	(250)	(3,891)
Interest on withholding	12	63
Current liabilities, ending balance	240	5,707
Noncurrent liabilities, beginning balance	19,840	27,513
Expenses	0
NPM Settlement adjustment	0	0
Payments	0
Reclassification to/(from) non-current liabilities	218	4,266
Interest on withholding	514	670
Noncurrent liabilities, ending balance	$ 20,136	$ 23,917