Goodwill and Intangible Assets - Change in Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Roll Forward]
Beginning balance	$ 64,035	$ 66,639
Measurement period adjustments		(300)
Foreign currency translation	860	(2,304)
Impairment charges	(5,676)
Ending balance	59,219	64,035
Distribution [Member]
Goodwill [Roll Forward]
Beginning balance	505	505
Measurement period adjustments		0
Foreign currency translation	0	0
Impairment charges	0
Ending balance	505	505
Material Handling [Member]
Goodwill [Roll Forward]
Beginning balance	63,530	66,134
Measurement period adjustments		(300)
Foreign currency translation	860	(2,304)
Impairment charges	(5,676)
Ending balance	$ 58,714	$ 63,530