Goodwill and Other Intangibles - Segment (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017 USD ($)
Goodwill
Balance at the beginning of the period	$ 10,102
Balance at the end of the period	10,962
European Operations
Goodwill
Balance at the beginning of the period	10,102
Currency translation adjustment	860
Balance at the end of the period	$ 10,962