Segment Reporting (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Segment Reporting [Abstract]
Number of operating segments									4
Number of reportable segments									1
Number of customers exceeding ten percent of net sales									0
Concentration Risk, Percentage									10.00%
Revenues from External Customers and Long-Lived Assets
Net Sales	$ 205,853	$ 204,802	$ 215,404	$ 185,740	$ 216,277	$ 202,643	$ 219,084	$ 183,979	$ 811,799	$ 821,983	$ 752,011
Long-Lived Assets	126,600				131,678				126,600	131,678	138,587
Equipment
Revenues from External Customers and Long-Lived Assets
Net Sales									499,634	500,141	444,773
Parts and consumables
Revenues from External Customers and Long-Lived Assets
Net Sales									175,697	182,845	176,442
Service and other
Revenues from External Customers and Long-Lived Assets
Net Sales									112,622	114,027	109,533
Specialty surface coatings
Revenues from External Customers and Long-Lived Assets
Net Sales									23,846	24,970	21,263
Americas
Revenues from External Customers and Long-Lived Assets
Net Sales									591,405	569,004	514,544
Long-Lived Assets	110,842				103,958				110,842	103,958	106,409
Europe, Middle East, Africa
Revenues from External Customers and Long-Lived Assets
Net Sales									139,834	165,686	157,208
Long-Lived Assets	11,100				24,051				11,100	24,051	28,296
Asia Pacific
Revenues from External Customers and Long-Lived Assets
Net Sales									80,560	87,293	80,259
Long-Lived Assets	$ 4,658				$ 3,669				$ 4,658	$ 3,669	$ 3,882