Summary of Significant Accounting Policies (Other Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounting Policies [Abstract]
Allowance for doubtful accounts and cash discounts	$ 361	$ 479
Current restricted assets	7,330	9,195
Long-term restricted assets	3,986	12,303
Tax on payments of dividend equivalent rights	6,258	5,566	$ 4,612
Shipping and handling fees and costs	5,268	5,488	5,585
Tobacco and E-Cigarettes [Member]
Segment Reporting Information [Line Items]
Advertising costs	3,397	5,097	9,493
Real Estate
Segment Reporting Information [Line Items]
Advertising costs	$ 22,835	$ 25,657	$ 14,952