Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Goodwill [Roll Forward]
Balance	$ 2,520	$ 2,740
Currency exchange rate adjustment	(407)
Business acquisition (Note 2)	58,357
Balance	60,470	2,520	$ 2,740
Direct
Goodwill [Roll Forward]
Balance	2,520	2,740	2,940
Currency exchange rate adjustment	(407)	(220)	(200)
Business acquisition (Note 2)	0
Balance	2,113	$ 2,520	$ 2,740
Retail
Goodwill [Roll Forward]
Business acquisition (Note 2)	58,357
Balance	$ 58,357