Goodwill and Other Intangibles - Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Goodwill
Balance at the beginning of the period	$ 11,933
Balance at the end of the period	10,102	$ 11,933
European Operations | Operating Segments
Goodwill
Balance at the beginning of the period	11,933	12,803
Currency translation adjustment	(1,831)	(870)
Balance at the end of the period	$ 10,102	$ 11,933