Goodwill and Other Intangible Assets Goodwill Roll Forward (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Goodwill [Roll Forward]
Balance	$ 60,470	$ 2,520
Currency exchange rate adjustment	143	(407)
Business acquisition (Note 2)		58,357
Business acquisition (Note 2) - measurement period adjustments	(138)
Balance	60,475	60,470
Direct
Goodwill [Roll Forward]
Balance	2,113	2,520
Currency exchange rate adjustment	149	(407)
Business acquisition (Note 2)		0
Business acquisition (Note 2) - measurement period adjustments	0
Balance	2,262	2,113
Retail
Goodwill [Roll Forward]
Balance	58,357	0
Currency exchange rate adjustment	(6)	0
Business acquisition (Note 2)		58,357
Business acquisition (Note 2) - measurement period adjustments	(138)
Balance	$ 58,213	$ 58,357