Goodwill and Other Intangible Assets Goodwill Roll Forward (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2018		Dec. 31, 2017
Goodwill [Roll Forward]
Balance	$ 62,030	[1]	$ 61,888
Currency exchange rate adjustment	(61)		142
Balance	61,969		62,030	[1]
Direct
Goodwill [Roll Forward]
Balance	2,335		2,180
Currency exchange rate adjustment	(65)		155
Balance	2,270		2,335
Retail
Goodwill [Roll Forward]
Balance	59,695		59,708
Currency exchange rate adjustment	4		(13)
Balance	$ 59,699		$ 59,695

[1] See Note 2.